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[PATCH OLK-5.10] thermal: core: Fix thermal zone governor cleanup issues
by Jinjie Ruan 30 May '26

30 May '26

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> mainline inclusion from mainline-v7.1-rc1 commit 41ff66baf81c6541f4f985dd7eac4494d03d9440 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/15286 CVE: CVE-2026-46021 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak. In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case. Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration. Fixes: e33df1d2f3a0 ("thermal: let governors have private data for each thermal zone") Cc: All applicable <stable(a)vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Link: https://patch.msgid.link/5092923.31r3eYUQgx@rafael.j.wysocki Conflicts: drivers/thermal/thermal_core.c [context conflict.] Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- drivers/thermal/thermal_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 93cdceddc94c..2de1176f0952 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -987,6 +987,7 @@ static void thermal_release(struct device *dev) sizeof("thermal_zone") - 1)) { tz = to_thermal_zone(dev); thermal_zone_destroy_device_groups(tz); + thermal_set_governor(tz, NULL); kfree(tz); } else if (!strncmp(dev_name(dev), "cooling_device", sizeof("cooling_device") - 1)) { @@ -1448,8 +1449,10 @@ thermal_zone_device_register(const char *type, int trips, int mask, /* sys I/F */ /* Add nodes that are always present via .groups */ result = thermal_zone_create_device_groups(tz, mask); - if (result) + if (result) { + thermal_set_governor(tz, NULL); goto remove_id; + } /* A new thermal zone needs to be updated anyway. */ atomic_set(&tz->need_update, 1); @@ -1578,8 +1581,6 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) cancel_delayed_work_sync(&tz->poll_queue); - thermal_set_governor(tz, NULL); - thermal_remove_hwmon_sysfs(tz); ida_simple_remove(&thermal_tz_ida, tz->id); ida_destroy(&tz->ida); -- 2.34.1

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[PATCH OLK-6.6] thermal: core: Fix thermal zone governor cleanup issues
by Jinjie Ruan 30 May '26

30 May '26

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> mainline inclusion from mainline-v7.1-rc1 commit 41ff66baf81c6541f4f985dd7eac4494d03d9440 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/15286 CVE: CVE-2026-46021 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- If thermal_zone_device_register_with_trips() fails after adding a thermal governor to the thermal zone being registered, the governor is not removed from it as appropriate which may lead to a memory leak. In turn, thermal_zone_device_unregister() calls thermal_set_governor() without acquiring the thermal zone lock beforehand which may race with a governor update via sysfs and may lead to a use-after-free in that case. Address these issues by adding two thermal_set_governor() calls, one to thermal_release() to remove the governor from the given thermal zone, and one to the thermal zone registration error path to cover failures preceding the thermal zone device registration. Fixes: e33df1d2f3a0 ("thermal: let governors have private data for each thermal zone") Cc: All applicable <stable(a)vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Link: https://patch.msgid.link/5092923.31r3eYUQgx@rafael.j.wysocki Conflicts: drivers/thermal/thermal_core.c [context conflict.] Signed-off-by: Jinjie Ruan <ruanjinjie(a)huawei.com> --- drivers/thermal/thermal_core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 2476774af738..677db876a229 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -805,6 +805,7 @@ static void thermal_release(struct device *dev) sizeof("thermal_zone") - 1)) { tz = to_thermal_zone(dev); thermal_zone_destroy_device_groups(tz); + thermal_set_governor(tz, NULL); mutex_destroy(&tz->lock); complete(&tz->removal); } else if (!strncmp(dev_name(dev), "cooling_device", @@ -1326,8 +1327,10 @@ thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *t /* sys I/F */ /* Add nodes that are always present via .groups */ result = thermal_zone_create_device_groups(tz, mask); - if (result) + if (result) { + thermal_set_governor(tz, NULL); goto remove_id; + } /* A new thermal zone needs to be updated anyway. */ atomic_set(&tz->need_update, 1); @@ -1478,8 +1481,6 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz) cancel_delayed_work_sync(&tz->poll_queue); - thermal_set_governor(tz, NULL); - thermal_remove_hwmon_sysfs(tz); ida_free(&thermal_tz_ida, tz->id); ida_destroy(&tz->ida); -- 2.34.1

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[PATCH OLK-6.6] Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
by Chen Jinghuang 30 May '26

30 May '26

From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> stable inclusion from stable-v6.6.140 commit 6cb7f67bc28da787499291a562d49a084d9c90cd category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/15492 CVE: CVE-2026-46138 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 5ddb8014261137cadaf83ab5617a588d80a22586 upstream. hci_le_create_big_complete_evt() iterates over BT_BOUND connections for a BIG handle using a while loop, accessing ev->bis_handle[i++] on each iteration. However, there is no check that i stays within ev->num_bis before the array access. When a controller sends a LE_Create_BIG_Complete event with fewer bis_handle entries than there are BT_BOUND connections for that BIG, or with num_bis=0, the loop reads beyond the valid bis_handle[] flex array into adjacent heap memory. Since the out-of-bounds values typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle() rejects them and the connection remains in BT_BOUND state. The same connection is then found again by hci_conn_hash_lookup_big_state(), creating an infinite loop with hci_dev_lock held. Fix this by terminating the BIG if in case not all BIS could be setup properly. Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes") Cc: stable(a)vger.kernel.org Signed-off-by: ZhiTao Ou <hkbinbinbin(a)gmail.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Chen Jinghuang <chenjinghuang2(a)huawei.com> --- net/bluetooth/hci_event.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index f4b2cddc5370..b89b42966665 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -6896,9 +6896,29 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, continue; } + if (ev->num_bis <= i) { + bt_dev_err(hdev, + "Not enough BIS handles for BIG 0x%2.2x", + ev->handle); + ev->status = HCI_ERROR_UNSPECIFIED; + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); + continue; + } + if (hci_conn_set_handle(conn, - __le16_to_cpu(ev->bis_handle[i++]))) + __le16_to_cpu(ev->bis_handle[i++]))) { + bt_dev_err(hdev, + "Failed to set BIS handle for BIG 0x%2.2x", + ev->handle); + /* Force error so BIG gets terminated as not all BIS + * could be connected. + */ + ev->status = HCI_ERROR_UNSPECIFIED; + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); continue; + } conn->state = BT_CONNECTED; set_bit(HCI_CONN_BIG_CREATED, &conn->flags); @@ -6907,7 +6927,10 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, hci_iso_setup_path(conn); } - if (!ev->status && !i) + /* If there is an unexpected error or if no BISes have been connected + * for the BIG, terminate it. + */ + if (ev->status == HCI_ERROR_UNSPECIFIED || (!ev->status && !i)) /* If no BISes have been connected for the BIG, * terminate. This is in case all bound connections * have been closed before the BIG creation -- 2.34.1

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[PATCH] Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
by Chen Jinghuang 30 May '26

30 May '26

From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> stable inclusion from stable-v6.6.140 commit 6cb7f67bc28da787499291a562d49a084d9c90cd category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/15492 CVE: CVE-2026-46138 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 5ddb8014261137cadaf83ab5617a588d80a22586 upstream. hci_le_create_big_complete_evt() iterates over BT_BOUND connections for a BIG handle using a while loop, accessing ev->bis_handle[i++] on each iteration. However, there is no check that i stays within ev->num_bis before the array access. When a controller sends a LE_Create_BIG_Complete event with fewer bis_handle entries than there are BT_BOUND connections for that BIG, or with num_bis=0, the loop reads beyond the valid bis_handle[] flex array into adjacent heap memory. Since the out-of-bounds values typically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle() rejects them and the connection remains in BT_BOUND state. The same connection is then found again by hci_conn_hash_lookup_big_state(), creating an infinite loop with hci_dev_lock held. Fix this by terminating the BIG if in case not all BIS could be setup properly. Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes") Cc: stable(a)vger.kernel.org Signed-off-by: ZhiTao Ou <hkbinbinbin(a)gmail.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Chen Jinghuang <chenjinghuang2(a)huawei.com> --- net/bluetooth/hci_event.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index f4b2cddc5370..b89b42966665 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -6896,9 +6896,29 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, continue; } + if (ev->num_bis <= i) { + bt_dev_err(hdev, + "Not enough BIS handles for BIG 0x%2.2x", + ev->handle); + ev->status = HCI_ERROR_UNSPECIFIED; + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); + continue; + } + if (hci_conn_set_handle(conn, - __le16_to_cpu(ev->bis_handle[i++]))) + __le16_to_cpu(ev->bis_handle[i++]))) { + bt_dev_err(hdev, + "Failed to set BIS handle for BIG 0x%2.2x", + ev->handle); + /* Force error so BIG gets terminated as not all BIS + * could be connected. + */ + ev->status = HCI_ERROR_UNSPECIFIED; + hci_connect_cfm(conn, ev->status); + hci_conn_del(conn); continue; + } conn->state = BT_CONNECTED; set_bit(HCI_CONN_BIG_CREATED, &conn->flags); @@ -6907,7 +6927,10 @@ static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, hci_iso_setup_path(conn); } - if (!ev->status && !i) + /* If there is an unexpected error or if no BISes have been connected + * for the BIG, terminate it. + */ + if (ev->status == HCI_ERROR_UNSPECIFIED || (!ev->status && !i)) /* If no BISes have been connected for the BIG, * terminate. This is in case all bound connections * have been closed before the BIG creation -- 2.34.1

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[PATCH OLK-6.6 0/3] CVE-2026-43421
by Xinyu Zheng 30 May '26

30 May '26

Krishna Kurapati (2): usb: gadget: ncm: Add support to update wMaxSegmentSize via configfs usb: gadget: ncm: Fix endianness of wMaxSegmentSize variable in ecm_desc Kuen-Han Tsai (1): usb: gadget: f_ncm: Fix net_device lifecycle with device_move Documentation/usb/gadget-testing.rst | 20 ++--- drivers/usb/gadget/function/f_ncm.c | 101 ++++++++++++++++++++++---- drivers/usb/gadget/function/u_ether.c | 22 ++++++ drivers/usb/gadget/function/u_ether.h | 26 +++++++ drivers/usb/gadget/function/u_ncm.h | 4 +- 5 files changed, 150 insertions(+), 23 deletions(-) -- 2.34.1

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[PATCH] usb: ulpi: fix double free in ulpi_register_interface() error path
by Liu Mingrui 30 May '26

30 May '26

From: Guangshuo Li <lgs201920130244(a)gmail.com> stable inclusion from stable-v6.6.134 commit aaeae6533d77e6ed4def85baec01e2815ebbef61 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/14509 CVE: CVE-2026-31759 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 01af542392b5d41fd659d487015a71f627accce3 upstream. When device_register() fails, ulpi_register() calls put_device() on ulpi->dev. The device release callback ulpi_dev_release() drops the OF node reference and frees ulpi, but the current error path in ulpi_register_interface() then calls kfree(ulpi) again, causing a double free. Let put_device() handle the cleanup through ulpi_dev_release() and avoid freeing ulpi again in ulpi_register_interface(). Fixes: 289fcff4bcdb1 ("usb: add bus type for USB ULPI") Cc: stable <stable(a)kernel.org> Signed-off-by: Guangshuo Li <lgs201920130244(a)gmail.com> Reviewed-by: Heikki Krogerus <heikki.krogerus(a)linux.intel.com> Link: https://patch.msgid.link/20260401025142.1398996-1-lgs201920130244@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yuan Can <yuancan(a)huawei.com> Signed-off-by: Liu Mingrui <liumingrui(a)huawei.com> --- drivers/usb/common/ulpi.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c index 3c705f1bead8..ddb316dd2a82 100644 --- a/drivers/usb/common/ulpi.c +++ b/drivers/usb/common/ulpi.c @@ -288,10 +288,9 @@ struct ulpi *ulpi_register_interface(struct device *dev, ulpi->ops = ops; ret = ulpi_register(dev, ulpi); - if (ret) { - kfree(ulpi); + if (ret) return ERR_PTR(ret); - } + return ulpi; } -- 2.34.1

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[PATCH OLK-5.10 0/1] CVE-2023-53712
by Liu Mingrui 30 May '26

30 May '26

From: Mingrui Liu <liumingrui(a)huawei.com> CVE-2023-53712 Mårten Lindahl (1): ARM: 9317/1: kexec: Make smp stop calls asynchronous arch/arm/kernel/machine_kexec.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) -- 2.34.1

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[PATCH OLK-5.10] xfrm: always flush state and policy upon NETDEV_UNREGISTER event
by superdcc97＠163.com 29 May '26

29 May '26

From: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> mainline inclusion from mainline-v7.0-rc2 commit 4efa91a28576054aae0e6dad9cba8fed8293aef8 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/14713 CVE: CVE-2026-43167 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- syzbot is reporting that "struct xfrm_state" refcount is leaking. unregister_netdevice: waiting for netdevsim0 to become free. Usage count = 2 ref_tracker: netdev@ffff888052f24618 has 1/1 users at __netdev_tracker_alloc include/linux/netdevice.h:4400 [inline] netdev_tracker_alloc include/linux/netdevice.h:4412 [inline] xfrm_dev_state_add+0x3a5/0x1080 net/xfrm/xfrm_device.c:316 xfrm_state_construct net/xfrm/xfrm_user.c:986 [inline] xfrm_add_sa+0x34ff/0x5fa0 net/xfrm/xfrm_user.c:1022 xfrm_user_rcv_msg+0x58e/0xc00 net/xfrm/xfrm_user.c:3507 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550 xfrm_netlink_rcv+0x71/0x90 net/xfrm/xfrm_user.c:3529 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2646 __sys_sendmsg+0x16d/0x220 net/socket.c:2678 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f This is because commit d77e38e612a0 ("xfrm: Add an IPsec hardware offloading API") implemented xfrm_dev_unregister() as no-op despite xfrm_dev_state_add() from xfrm_state_construct() acquires a reference to "struct net_device". I guess that that commit expected that NETDEV_DOWN event is fired before NETDEV_UNREGISTER event fires, and also assumed that xfrm_dev_state_add() is called only if (dev->features & NETIF_F_HW_ESP) != 0. Sabrina Dubroca identified steps to reproduce the same symptoms as below. echo 0 > /sys/bus/netdevsim/new_device dev=$(ls -1 /sys/bus/netdevsim/devices/netdevsim0/net/) ip xfrm state add src 192.168.13.1 dst 192.168.13.2 proto esp \ spi 0x1000 mode tunnel aead 'rfc4106(gcm(aes))' $key 128 \ offload crypto dev $dev dir out ethtool -K $dev esp-hw-offload off echo 0 > /sys/bus/netdevsim/del_device Like these steps indicate, the NETIF_F_HW_ESP bit can be cleared after xfrm_dev_state_add() acquired a reference to "struct net_device". Also, xfrm_dev_state_add() does not check for the NETIF_F_HW_ESP bit when acquiring a reference to "struct net_device". Commit 03891f820c21 ("xfrm: handle NETDEV_UNREGISTER for xfrm device") re-introduced the NETDEV_UNREGISTER event to xfrm_dev_event(), but that commit for unknown reason chose to share xfrm_dev_down() between the NETDEV_DOWN event and the NETDEV_UNREGISTER event. I guess that that commit missed the behavior in the previous paragraph. Therefore, we need to re-introduce xfrm_dev_unregister() in order to release the reference to "struct net_device" by unconditionally flushing state and policy. Reported-by: syzbot+881d65229ca4f9ae8c84(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84 Fixes: d77e38e612a0 ("xfrm: Add an IPsec hardware offloading API") Cc: Sabrina Dubroca <sd(a)queasysnail.net> Signed-off-by: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> Signed-off-by: Steffen Klassert <steffen.klassert(a)secunet.com> Conflicts: net/xfrm/xfrm_device.c [OLK-5.10: xfrm_dev_policy_flush() does not exist because xfrm policy offload was added in later kernels. Only call xfrm_dev_state_flush() in xfrm_dev_unregister().] Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- net/xfrm/xfrm_device.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index 8b8e957a69c3..0e7424b8a5fa 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -414,6 +414,13 @@ static int xfrm_dev_down(struct net_device *dev) return NOTIFY_DONE; } +static int xfrm_dev_unregister(struct net_device *dev) +{ + xfrm_dev_state_flush(dev_net(dev), dev, true); + + return NOTIFY_DONE; +} + static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = netdev_notifier_info_to_dev(ptr); @@ -426,8 +433,10 @@ static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void return xfrm_dev_feat_change(dev); case NETDEV_DOWN: - case NETDEV_UNREGISTER: return xfrm_dev_down(dev); + + case NETDEV_UNREGISTER: + return xfrm_dev_unregister(dev); } return NOTIFY_DONE; } -- 2.43.0

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[PATCH openEuler-1.0-LTS] smb: client: reject userspace cifs.spnego descriptions
by Zizhi Wo 29 May '26

29 May '26

From: Asim Viladi Oglu Manizada <manizada(a)pm.me> mainline inclusion from mainline-v7.1-rc5 commit 3da1fdf4efbc490041eb4f836bf596201203f8f2 category: bugfix bugzilla: https://atomgit.com/openeuler/kernel/issues/9294 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as kernel-originating inputs. However, userspace can also create keys of this type through request_key(2) or add_key(2), allowing those fields to be supplied without CIFS origin. Only accept cifs.spnego descriptions while CIFS is using its private spnego_cred to request the key. Fixes: f1d662a7d5e5 ("[CIFS] Add upcall files for cifs to use spnego/kerberos") Assisted-by: avom-custom-harness:gpt-5.5-qwen3.6-mod-mix Reviewed-by: David Howells <dhowells(a)redhat.com> Signed-off-by: Asim Viladi Oglu Manizada <manizada(a)pm.me> Signed-off-by: Steve French <stfrench(a)microsoft.com> Conflicts: fs/cifs/cifs_spnego.c fs/smb/client/cifs_spnego.c [File locations are inconsistent, not affect this patch.] Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- fs/cifs/cifs_spnego.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c index 7f01c6e60791..288d3ccfa231 100644 --- a/fs/cifs/cifs_spnego.c +++ b/fs/cifs/cifs_spnego.c @@ -18,10 +18,11 @@ * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/list.h> +#include <linux/cred.h> #include <linux/slab.h> #include <linux/string.h> #include <keys/user-type.h> #include <linux/key-type.h> #include <linux/keyctl.h> @@ -56,16 +57,31 @@ static void cifs_spnego_key_destroy(struct key *key) { kfree(key->payload.data[0]); } +static int +cifs_spnego_key_vet_description(const char *description) +{ + /* + * cifs.spnego descriptions are authority-bearing inputs to cifs.upcall. + * They are only valid when produced by CIFS while using the private + * spnego_cred installed below. Do not let userspace create this type + * of key through request_key(2)/add_key(2), since the helper treats + * pid/uid/creduid/upcall_target as kernel-originating fields. + */ + if (current_cred() != spnego_cred) + return -EPERM; + return 0; +} /* * keytype for CIFS spnego keys */ struct key_type cifs_spnego_key_type = { .name = "cifs.spnego", + .vet_description = cifs_spnego_key_vet_description, .instantiate = cifs_spnego_key_instantiate, .destroy = cifs_spnego_key_destroy, .describe = user_describe, }; -- 2.52.0

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[PATCH OLK-6.6 0/1] Fix CVE-2026-45943
by Hongbo Li 29 May '26

29 May '26

Fix CVE-2026-45943. Gao Xiang (1): erofs: fix inline data read failure for ztailpacking pclusters fs/erofs/zdata.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) -- 2.34.1

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