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[PATCH openEuler-1.0-LTS 0/1] CVE-2021-47277
by Yongqiang Liu 30 May '24

30 May '24

Paolo Bonzini (1): kvm: avoid speculation-based attacks from out-of-range memslot accesses include/linux/kvm_host.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) -- 2.34.1

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[PATCH openEuler-1.0-LTS] mcb: fix error handling in mcb_alloc_bus()
by Hui Tang 30 May '24

30 May '24

From: Dan Carpenter <dan.carpenter(a)oracle.com> stable inclusion from stable-v4.19.209 commit 66f74ba9be9daf9c47fface6af3677f602774f6b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4M2 CVE: CVE-2021-47361 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… --------------------------- commit 25a1433216489de4abc889910f744e952cb6dbae upstream. There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest. Fixes: 5d9e2ab9fea4 ("mcb: Implement bus->dev.release callback") Fixes: 18d288198099 ("mcb: Correctly initialize the bus's device") Cc: stable(a)vger.kernel.org Signed-off-by: Dan Carpenter <dan.carpenter(a)oracle.com> Signed-off-by: Johannes Thumshirn <jth(a)kernel.org> Link: https://lore.kernel.org/r/32e160cf6864ce77f9d62948338e24db9fd8ead9.16309313… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Hui Tang <tanghui20(a)huawei.com> --- drivers/mcb/mcb-core.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c index cee4f28baf95..4a2002ba2e23 100644 --- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -280,8 +280,8 @@ struct mcb_bus *mcb_alloc_bus(struct device *carrier) bus_nr = ida_simple_get(&mcb_ida, 0, 0, GFP_KERNEL); if (bus_nr < 0) { - rc = bus_nr; - goto err_free; + kfree(bus); + return ERR_PTR(bus_nr); } bus->bus_nr = bus_nr; @@ -296,12 +296,12 @@ struct mcb_bus *mcb_alloc_bus(struct device *carrier) dev_set_name(&bus->dev, "mcb:%d", bus_nr); rc = device_add(&bus->dev); if (rc) - goto err_free; + goto err_put; return bus; -err_free: - put_device(carrier); - kfree(bus); + +err_put: + put_device(&bus->dev); return ERR_PTR(rc); } EXPORT_SYMBOL_GPL(mcb_alloc_bus); -- 2.34.1

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[PATCH openEuler-22.03-LTS] s390/dasd: protect device queue against concurrent access
by Liu Shixin 30 May '24

30 May '24

From: Jan Höppner <hoeppner(a)linux.ibm.com> stable inclusion from stable-v5.10.203 commit c841de6247e94e07566d57163d3c0d8b29278f7a category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4KR CVE: CVE-2023-52774 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit db46cd1e0426f52999d50fa72cfa97fa39952885 upstream. In dasd_profile_start() the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel I/O, especially with alias devices enabled, the device queue can change while dasd_profile_start() is accessing the queue. In the worst case this leads to a kernel panic due to incorrect pointer accesses. Fix this by taking the device lock before accessing the queue and counting the requests. Additionally the check for a valid profile data pointer can be done earlier to avoid unnecessary locking in a hot path. Cc: <stable(a)vger.kernel.org> Fixes: 4fa52aa7a82f ("[S390] dasd: add enhanced DASD statistics interface") Reviewed-by: Stefan Haberland <sth(a)linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner(a)linux.ibm.com> Signed-off-by: Stefan Haberland <sth(a)linux.ibm.com> Link: https://lore.kernel.org/r/20231025132437.1223363-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: sanglipeng <sanglipeng1(a)jd.com> Signed-off-by: Liu Shixin <liushixin2(a)huawei.com> --- drivers/s390/block/dasd.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index f4edfe383e9d..0b195c1dc8de 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -737,18 +737,20 @@ static void dasd_profile_start(struct dasd_block *block, * we count each request only once. */ device = cqr->startdev; - if (device->profile.data) { - counter = 1; /* request is not yet queued on the start device */ - list_for_each(l, &device->ccw_queue) - if (++counter >= 31) - break; - } + if (!device->profile.data) + return; + + spin_lock(get_ccwdev_lock(device->cdev)); + counter = 1; /* request is not yet queued on the start device */ + list_for_each(l, &device->ccw_queue) + if (++counter >= 31) + break; + spin_unlock(get_ccwdev_lock(device->cdev)); + spin_lock(&device->profile.lock); - if (device->profile.data) { - device->profile.data->dasd_io_nr_req[counter]++; - if (rq_data_dir(req) == READ) - device->profile.data->dasd_read_nr_req[counter]++; - } + device->profile.data->dasd_io_nr_req[counter]++; + if (rq_data_dir(req) == READ) + device->profile.data->dasd_read_nr_req[counter]++; spin_unlock(&device->profile.lock); } -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga
by Wenyu Huang 30 May '24

30 May '24

From: Mario Limonciello <mario.limonciello(a)amd.com> stable inclusion from stable-v5.10.202 commit 8c1dbddbfcb051e82cea0c197c620f9dcdc38e92 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9RFE8 CVE: CVE-2023-52819 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 0f0e59075b5c22f1e871fbd508d6e4f495048356 ] For pptable structs that use flexible array sizes, use flexible arrays. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2036742 Signed-off-by: Mario Limonciello <mario.limonciello(a)amd.com> Acked-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Wenyu Huang <huangwenyu5(a)huawei.com> --- .../gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h index 1e870f58dd12..153459262a7e 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h @@ -164,7 +164,7 @@ typedef struct _ATOM_Tonga_State { typedef struct _ATOM_Tonga_State_Array { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Tonga_State entries[1]; /* Dynamically allocate entries. */ + ATOM_Tonga_State entries[]; /* Dynamically allocate entries. */ } ATOM_Tonga_State_Array; typedef struct _ATOM_Tonga_MCLK_Dependency_Record { @@ -210,7 +210,7 @@ typedef struct _ATOM_Polaris_SCLK_Dependency_Record { typedef struct _ATOM_Polaris_SCLK_Dependency_Table { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Polaris_SCLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */ + ATOM_Polaris_SCLK_Dependency_Record entries[]; /* Dynamically allocate entries. */ } ATOM_Polaris_SCLK_Dependency_Table; typedef struct _ATOM_Tonga_PCIE_Record { @@ -222,7 +222,7 @@ typedef struct _ATOM_Tonga_PCIE_Record { typedef struct _ATOM_Tonga_PCIE_Table { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Tonga_PCIE_Record entries[1]; /* Dynamically allocate entries. */ + ATOM_Tonga_PCIE_Record entries[]; /* Dynamically allocate entries. */ } ATOM_Tonga_PCIE_Table; typedef struct _ATOM_Polaris10_PCIE_Record { @@ -235,7 +235,7 @@ typedef struct _ATOM_Polaris10_PCIE_Record { typedef struct _ATOM_Polaris10_PCIE_Table { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Polaris10_PCIE_Record entries[1]; /* Dynamically allocate entries. */ + ATOM_Polaris10_PCIE_Record entries[]; /* Dynamically allocate entries. */ } ATOM_Polaris10_PCIE_Table; @@ -252,7 +252,7 @@ typedef struct _ATOM_Tonga_MM_Dependency_Record { typedef struct _ATOM_Tonga_MM_Dependency_Table { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Tonga_MM_Dependency_Record entries[1]; /* Dynamically allocate entries. */ + ATOM_Tonga_MM_Dependency_Record entries[]; /* Dynamically allocate entries. */ } ATOM_Tonga_MM_Dependency_Table; typedef struct _ATOM_Tonga_Voltage_Lookup_Record { @@ -265,7 +265,7 @@ typedef struct _ATOM_Tonga_Voltage_Lookup_Record { typedef struct _ATOM_Tonga_Voltage_Lookup_Table { UCHAR ucRevId; UCHAR ucNumEntries; /* Number of entries. */ - ATOM_Tonga_Voltage_Lookup_Record entries[1]; /* Dynamically allocate entries. */ + ATOM_Tonga_Voltage_Lookup_Record entries[]; /* Dynamically allocate entries. */ } ATOM_Tonga_Voltage_Lookup_Table; typedef struct _ATOM_Tonga_Fan_Table { -- 2.34.1

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[PATCH openEuler-1.0-LTS 0/2] jfs: fix two
by Long Li 30 May '24

30 May '24

This patch set fix two array-index-out-of-bounds issuse. Manas Ghandat (1): jfs: fix array-index-out-of-bounds in dbFindLeaf Yogesh (1): fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev fs/jfs/jfs_dmap.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) -- 2.39.2

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[PATCH OLK-6.6] xfs: Fix file creation failure
by Zizhi Wo 30 May '24

30 May '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9TDTA CVE: NA -------------------------------- In the file system expansion test and concurrent file creation and writing scenarios, file creation fails occasionally. The detailed test scheme is as follows: 1. If the remaining space is less than 128 MB, expand the space by 1 GB; --xfs_growfs /$DEV -D $bc -m 100 2. 32 processes create a file every 0.5s and write 4 KB to 4 MB data randomly. --filesize=$((RANDOM % 1024 + 1)) --dd if=/dev/zero oflag=direct of=$filename bs=4K count=$filesize And when the file creation fails, there are still hundreds of megabytes of free space. The overall analysis process is as follows: Direct write Create file xfs_file_write_iter ... xfs_direct_write_iomap_begin xfs_iomap_write_direct ... xfs_alloc_ag_vextent_near xfs_alloc_cur_finish xfs_alloc_fixup_trees xfs_btree_delete xfs_btree_delrec xfs_allocbt_update_lastrec // Longest = 0 because numrec == 0. agf->agf_longest = len = 0 xfs_create ... xfs_dialloc ... xfs_alloc_fix_freelist xfs_alloc_space_available -> as longest=0, it will return false, no space for inode alloc. The root cause of the problem is that allocation extents holds agf locks, but the inode creation process will quickly check whether there is space firstly, which does not have agf locks. And when the first judgment fails, it returns directly. If the first judgment passes, the lock is held before entering the second judgment, that's how the "check-lock-check again" algorithm is designed. If all AG fails in no lock check, an error will return. This problem occurs probably when there is not enough space left for all the AG's in front, and the last AG deletes the last CNT tree record and the new record is not inserted yet. Fix this issue by adding the bc_free_longest field to the xfs_btree_cur_t structure to store the longest count that will be updated. The assignment is done in xfs_alloc_fixup_trees() and xfs_free_ag_extent(). Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- fs/xfs/libxfs/xfs_alloc.c | 14 ++++++++++++++ fs/xfs/libxfs/xfs_alloc_btree.c | 9 ++++++++- fs/xfs/libxfs/xfs_btree.h | 1 + 3 files changed, 23 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index 6e448f50cef4..4dd3238161cf 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -586,6 +586,13 @@ xfs_alloc_fixup_trees( nfbno2 = rbno + rlen; nflen2 = (fbno + flen) - nfbno2; } + + /* + * Record the potential maximum free length in advance. + */ + if (nfbno1 != NULLAGBLOCK || nfbno2 != NULLAGBLOCK) + cnt_cur->bc_ag.bc_free_longest = XFS_EXTLEN_MAX(nflen1, nflen2); + /* * Delete the entry from the by-size btree. */ @@ -2019,6 +2026,13 @@ xfs_free_ag_extent( * Now allocate and initialize a cursor for the by-size tree. */ cnt_cur = xfs_allocbt_init_cursor(mp, tp, agbp, pag, XFS_BTNUM_CNT); + /* + * Record the potential maximum free length in advance. + */ + if (haveleft) + cnt_cur->bc_ag.bc_free_longest = ltlen; + if (haveright) + cnt_cur->bc_ag.bc_free_longest = gtlen; /* * Have both left and right contiguous neighbors. * Merge all three into a single free block. diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c index c65228efed4a..d2c7a217a74b 100644 --- a/fs/xfs/libxfs/xfs_alloc_btree.c +++ b/fs/xfs/libxfs/xfs_alloc_btree.c @@ -146,7 +146,14 @@ xfs_allocbt_update_lastrec( rrp = XFS_ALLOC_REC_ADDR(cur->bc_mp, block, numrecs); len = rrp->ar_blockcount; } else { - len = 0; + /* + * Update in advance to prevent file creation failure + * for concurrent processes even though there is no + * numrec currently. + * And there's no need to worry as the value that no + * less than bc_free_longest will be inserted later. + */ + len = cpu_to_be32(cur->bc_ag.bc_free_longest); } break; diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 4d68a58be160..bf63bbcd4914 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -218,6 +218,7 @@ union xfs_btree_irec { /* Per-AG btree information. */ struct xfs_btree_cur_ag { struct xfs_perag *pag; + xfs_extlen_t bc_free_longest; /* the potential longest free extent */ union { struct xfs_buf *agbp; struct xbtree_afakeroot *afake; /* for staging cursor */ -- 2.39.2

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[PATCH openEuler-1.0-LTS] mac80211: fix use-after-free in CCMP/GCMP RX
by Li Huafei 30 May '24

30 May '24

From: Johannes Berg <johannes.berg(a)intel.com> stable inclusion from stable-v4.19.209 commit 3d5d629c99c468458022e9b381789de3595bf4dd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4NV CVE: CVE-2021-47388 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 94513069eb549737bcfc3d988d6ed4da948a2de8 upstream. When PN checking is done in mac80211, for fragmentation we need to copy the PN to the RX struct so we can later use it to do a comparison, since commit bf30ca922a0c ("mac80211: check defrag PN against current frame"). Unfortunately, in that commit I used the 'hdr' variable without it being necessarily valid, so use-after-free could occur if it was necessary to reallocate (parts of) the frame. Fix this by reloading the variable after the code that results in the reallocations, if any. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=214401. Cc: stable(a)vger.kernel.org Fixes: bf30ca922a0c ("mac80211: check defrag PN against current frame") Link: https://lore.kernel.org/r/20210927115838.12b9ac6bb233.I1d066acd5408a662c3b6… Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Li Huafei <lihuafei1(a)huawei.com> --- net/mac80211/wpa.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index dbeccccf0fdf3..b1d2e2b54f85a 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -523,6 +523,9 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx, return RX_DROP_UNUSABLE; } + /* reload hdr - skb might have been reallocated */ + hdr = (void *)rx->skb->data; + data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN - mic_len; if (!rx->sta || data_len < 0) return RX_DROP_UNUSABLE; @@ -752,6 +755,9 @@ ieee80211_crypto_gcmp_decrypt(struct ieee80211_rx_data *rx) return RX_DROP_UNUSABLE; } + /* reload hdr - skb might have been reallocated */ + hdr = (void *)rx->skb->data; + data_len = skb->len - hdrlen - IEEE80211_GCMP_HDR_LEN - mic_len; if (!rx->sta || data_len < 0) return RX_DROP_UNUSABLE; -- 2.25.1

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[PATCH openEuler-1.0-LTS] s390/dasd: protect device queue against concurrent access
by Liu Shixin 30 May '24

30 May '24

From: Jan Höppner <hoeppner(a)linux.ibm.com> stable inclusion from stable-v4.19.301 commit f75617cc8df4155374132f0b500b0b3ebb967458 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4KR CVE: CVE-2023-52774 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit db46cd1e0426f52999d50fa72cfa97fa39952885 upstream. In dasd_profile_start() the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel I/O, especially with alias devices enabled, the device queue can change while dasd_profile_start() is accessing the queue. In the worst case this leads to a kernel panic due to incorrect pointer accesses. Fix this by taking the device lock before accessing the queue and counting the requests. Additionally the check for a valid profile data pointer can be done earlier to avoid unnecessary locking in a hot path. Cc: <stable(a)vger.kernel.org> Fixes: 4fa52aa7a82f ("[S390] dasd: add enhanced DASD statistics interface") Reviewed-by: Stefan Haberland <sth(a)linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner(a)linux.ibm.com> Signed-off-by: Stefan Haberland <sth(a)linux.ibm.com> Link: https://lore.kernel.org/r/20231025132437.1223363-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Liu Shixin <liushixin2(a)huawei.com> --- drivers/s390/block/dasd.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 433651225fca..180c24cb4538 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -725,18 +725,20 @@ static void dasd_profile_start(struct dasd_block *block, * we count each request only once. */ device = cqr->startdev; - if (device->profile.data) { - counter = 1; /* request is not yet queued on the start device */ - list_for_each(l, &device->ccw_queue) - if (++counter >= 31) - break; - } + if (!device->profile.data) + return; + + spin_lock(get_ccwdev_lock(device->cdev)); + counter = 1; /* request is not yet queued on the start device */ + list_for_each(l, &device->ccw_queue) + if (++counter >= 31) + break; + spin_unlock(get_ccwdev_lock(device->cdev)); + spin_lock(&device->profile.lock); - if (device->profile.data) { - device->profile.data->dasd_io_nr_req[counter]++; - if (rq_data_dir(req) == READ) - device->profile.data->dasd_read_nr_req[counter]++; - } + device->profile.data->dasd_io_nr_req[counter]++; + if (rq_data_dir(req) == READ) + device->profile.data->dasd_read_nr_req[counter]++; spin_unlock(&device->profile.lock); } -- 2.25.1

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[PATCH OLK-5.10] mptcp: ensure tx skbs always have the MPTCP ext
by Ziyang Xuan 30 May '24

30 May '24

From: Paolo Abeni <pabeni(a)redhat.com> mainline inclusion from mainline-v5.15-rc3 commit 977d293e23b48a1129830d7968605f61c4af71a0 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4NZ CVE: CVE-2021-47370 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Due to signed/unsigned comparison, the expression: info->size_goal - skb->len > 0 evaluates to true when the size goal is smaller than the skb size. That results in lack of tx cache refill, so that the skb allocated by the core TCP code lacks the required MPTCP skb extensions. Due to the above, syzbot is able to trigger the following WARN_ON(): WARNING: CPU: 1 PID: 810 at net/mptcp/protocol.c:1366 mptcp_sendmsg_frag+0x1362/0x1bc0 net/mptcp/protocol.c:1366 Modules linked in: CPU: 1 PID: 810 Comm: syz-executor.4 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mptcp_sendmsg_frag+0x1362/0x1bc0 net/mptcp/protocol.c:1366 Code: ff 4c 8b 74 24 50 48 8b 5c 24 58 e9 0f fb ff ff e8 13 44 8b f8 4c 89 e7 45 31 ed e8 98 57 2e fe e9 81 f4 ff ff e8 fe 43 8b f8 <0f> 0b 41 bd ea ff ff ff e9 6f f4 ff ff 4c 89 e7 e8 b9 8e d2 f8 e9 RSP: 0018:ffffc9000531f6a0 EFLAGS: 00010216 RAX: 000000000000697f RBX: 0000000000000000 RCX: ffffc90012107000 RDX: 0000000000040000 RSI: ffffffff88eac9e2 RDI: 0000000000000003 RBP: ffff888078b15780 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff88eac017 R11: 0000000000000000 R12: ffff88801de0a280 R13: 0000000000006b58 R14: ffff888066278280 R15: ffff88803c2fe9c0 FS: 00007fd9f866e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faebcb2f718 CR3: 00000000267cb000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __mptcp_push_pending+0x1fb/0x6b0 net/mptcp/protocol.c:1547 mptcp_release_cb+0xfe/0x210 net/mptcp/protocol.c:3003 release_sock+0xb4/0x1b0 net/core/sock.c:3206 sk_stream_wait_memory+0x604/0xed0 net/core/stream.c:145 mptcp_sendmsg+0xc39/0x1bc0 net/mptcp/protocol.c:1749 inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:643 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 sock_write_iter+0x2a0/0x3e0 net/socket.c:1057 call_write_iter include/linux/fs.h:2163 [inline] new_sync_write+0x40b/0x640 fs/read_write.c:507 vfs_write+0x7cf/0xae0 fs/read_write.c:594 ksys_write+0x1ee/0x250 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd9f866e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 00000000000e7b78 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 0000000000a9fb1f R14: 00007fd9f866e300 R15: 0000000000022000 Fix the issue rewriting the relevant expression to avoid sign-related problems - note: size_goal is always >= 0. Additionally, ensure that the skb in the tx cache always carries the relevant extension. Reported-and-tested-by: syzbot+263a248eec3e875baa7b(a)syzkaller.appspotmail.com Fixes: 1094c6fe7280 ("mptcp: fix possible divide by zero") Signed-off-by: Paolo Abeni <pabeni(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Conflicts: net/mptcp/protocol.c [The version does not include commit 1094c6fe7280.] Signed-off-by: Ziyang Xuan <william.xuanziyang(a)huawei.com> --- net/mptcp/protocol.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 09d0510eaaa6..6ee641a3838d 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -933,7 +933,7 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk, * queue management operation, to avoid breaking the ext <-> * SSN association set here */ - can_collapse = (size_goal - skb->len > 0) && + can_collapse = (size_goal > skb->len) && mptcp_skb_can_collapse_to(*write_seq, skb, mpext); if (!can_collapse) TCP_SKB_CB(skb)->eor = 1; -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] perf: hisi: Fix use-after-free when register pmu fails
by Luo Gengkun 30 May '24

30 May '24

From: Junhao He <hejunhao3(a)huawei.com> mainline inclusion from mainline-v6.7-rc1 commit b805cafc604bfdb671fae7347a57f51154afa735 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9RKWV CVE: CVE-2023-52859 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- When we fail to register the uncore pmu, the pmu context may not been allocated. The error handing will call cpuhp_state_remove_instance() to call uncore pmu offline callback, which migrate the pmu context. Since that's liable to lead to some kind of use-after-free. Use cpuhp_state_remove_instance_nocalls() instead of cpuhp_state_remove_instance() so that the notifiers don't execute after the PMU device has been failed to register. Fixes: a0ab25cd82ee ("drivers/perf: hisi: Add support for HiSilicon PA PMU driver") FIxes: 3bf30882c3c7 ("drivers/perf: hisi: Add support for HiSilicon SLLC PMU driver") Signed-off-by: Junhao He <hejunhao3(a)huawei.com> Link: https://lore.kernel.org/r/20231024113630.13472-1-hejunhao3@huawei.com Signed-off-by: Will Deacon <will(a)kernel.org> Signed-off-by: Luo Gengkun <luogengkun2(a)huawei.com> --- drivers/perf/hisilicon/hisi_uncore_pa_pmu.c | 4 ++-- drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c index f1e6b5cee075..65ed4aa19266 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_pa_pmu.c @@ -430,8 +430,8 @@ static int hisi_pa_pmu_probe(struct platform_device *pdev) ret = perf_pmu_register(&pa_pmu->pmu, name, -1); if (ret) { dev_err(pa_pmu->dev, "PMU register failed, ret = %d\n", ret); - cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HISI_PA_ONLINE, - &pa_pmu->node); + cpuhp_state_remove_instance_nocalls(CPUHP_AP_PERF_ARM_HISI_PA_ONLINE, + &pa_pmu->node); return ret; } diff --git a/drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c index 835ec3e2178f..1a3d58ca854c 100644 --- a/drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c @@ -463,8 +463,8 @@ static int hisi_sllc_pmu_probe(struct platform_device *pdev) ret = perf_pmu_register(&sllc_pmu->pmu, name, -1); if (ret) { dev_err(sllc_pmu->dev, "PMU register failed, ret = %d\n", ret); - cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HISI_SLLC_ONLINE, - &sllc_pmu->node); + cpuhp_state_remove_instance_nocalls(CPUHP_AP_PERF_ARM_HISI_SLLC_ONLINE, + &sllc_pmu->node); return ret; } -- 2.34.1

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