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[PATCH OLK-6.6 0/2] CVE-2025-39744 fixup
by Jiacheng Yu 04 Feb '26

04 Feb '26

*** BLURB HERE *** Frederic Weisbecker (1): rcu: Fix racy re-initialization of irq_work causing hangs Joel Fernandes (1): rcu: Fix rcu_read_unlock() deadloop due to IRQ work kernel/rcu/tree.c | 2 ++ kernel/rcu/tree.h | 14 +++++++++++++- kernel/rcu/tree_plugin.h | 41 +++++++++++++++++++++++++++++----------- 3 files changed, 45 insertions(+), 12 deletions(-) -- 2.43.0

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[PATCH OLK-5.10 0/3] CVE-2025-39744 fixup
by Jiacheng Yu 04 Feb '26

04 Feb '26

*** BLURB HERE *** Frederic Weisbecker (1): rcu: Fix racy re-initialization of irq_work causing hangs Joel Fernandes (1): rcu: Fix rcu_read_unlock() deadloop due to IRQ work Zqiang (1): rcu: Use IRQ_WORK_INIT_HARD() to avoid rcu_read_unlock() hangs kernel/rcu/tree.c | 1 + kernel/rcu/tree.h | 14 +++++++++++++- kernel/rcu/tree_plugin.h | 36 ++++++++++++++++++++++++++++++------ 3 files changed, 44 insertions(+), 7 deletions(-) -- 2.43.0

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[PATCH OLK-6.6 0/2] CVE-2025-71141 fixup
by Jiacheng Yu 04 Feb '26

04 Feb '26

*** BLURB HERE *** Kory Maincent (TI.com) (1): drm/tilcdc: Fix removal actions in case of failed probe Philipp Stanner (1): drm/tilcdc: request and mapp iomem with devres drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 2 +- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 72 +++++++++++++++------------- drivers/gpu/drm/tilcdc/tilcdc_drv.h | 2 +- 3 files changed, 41 insertions(+), 35 deletions(-) -- 2.43.0

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[PATCH OLK-6.6] dmaengine: stm32: dmamux: fix device leak on route allocation
by Yin Tirui 04 Feb '26

04 Feb '26

From: Johan Hovold <johan(a)kernel.org> stable inclusion from stable-v6.6.122 commit 1a179ac01ff3993ab97e33cc77c316ed7415cda1 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13527 CVE: CVE-2025-71186 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit dd6e4943889fb354efa3f700e42739da9bddb6ef ] Make sure to drop the reference taken when looking up the DMA mux platform device during route allocation. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Fixes: df7e762db5f6 ("dmaengine: Add STM32 DMAMUX driver") Cc: stable(a)vger.kernel.org # 4.15 Cc: Pierre-Yves MORDRET <pierre-yves.mordret(a)foss.st.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> Reviewed-by: Amelie Delaunay <amelie.delaunay(a)foss.st.com> Link: https://patch.msgid.link/20251117161258.10679-11-johan@kernel.org Signed-off-by: Vinod Koul <vkoul(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yin Tirui <yintirui(a)huawei.com> --- drivers/dma/stm32-dmamux.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/dma/stm32-dmamux.c b/drivers/dma/stm32-dmamux.c index 8d77e2a7939a..791179760782 100644 --- a/drivers/dma/stm32-dmamux.c +++ b/drivers/dma/stm32-dmamux.c @@ -90,23 +90,25 @@ static void *stm32_dmamux_route_allocate(struct of_phandle_args *dma_spec, struct stm32_dmamux_data *dmamux = platform_get_drvdata(pdev); struct stm32_dmamux *mux; u32 i, min, max; - int ret; + int ret = -EINVAL; unsigned long flags; if (dma_spec->args_count != 3) { dev_err(&pdev->dev, "invalid number of dma mux args\n"); - return ERR_PTR(-EINVAL); + goto err_put_pdev; } if (dma_spec->args[0] > dmamux->dmamux_requests) { dev_err(&pdev->dev, "invalid mux request number: %d\n", dma_spec->args[0]); - return ERR_PTR(-EINVAL); + goto err_put_pdev; } mux = kzalloc(sizeof(*mux), GFP_KERNEL); - if (!mux) - return ERR_PTR(-ENOMEM); + if (!mux) { + ret = -ENOMEM; + goto err_put_pdev; + } spin_lock_irqsave(&dmamux->lock, flags); mux->chan_id = find_first_zero_bit(dmamux->dma_inuse, @@ -133,7 +135,6 @@ static void *stm32_dmamux_route_allocate(struct of_phandle_args *dma_spec, dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", i - 1); if (!dma_spec->np) { dev_err(&pdev->dev, "can't get dma master\n"); - ret = -EINVAL; goto error; } @@ -160,6 +161,8 @@ static void *stm32_dmamux_route_allocate(struct of_phandle_args *dma_spec, dev_dbg(&pdev->dev, "Mapping DMAMUX(%u) to DMA%u(%u)\n", mux->request, mux->master, mux->chan_id); + put_device(&pdev->dev); + return mux; error: @@ -167,6 +170,9 @@ static void *stm32_dmamux_route_allocate(struct of_phandle_args *dma_spec, error_chan_id: kfree(mux); +err_put_pdev: + put_device(&pdev->dev); + return ERR_PTR(ret); } -- 2.43.0

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[PATCH v3 0/3] arm64/riscv: Add support for crashkernel CMA reservation
by Jinjie Ruan 04 Feb '26

04 Feb '26

Add support for crashkernel CMA reservation for arm64 and riscv. By the way, exclude crash kernel memory in crash core to avoid duplication. Changs in v3: - Exclude crash kernel memory in crash core as Mike suggested. - Add acked-by. Jinjie Ruan (3): crash: Exclude crash kernel memory in crash core arm64: kexec: Add support for crashkernel CMA reservation riscv: kexec: Add support for crashkernel CMA reservation .../admin-guide/kernel-parameters.txt | 16 ++++---- arch/arm64/kernel/machine_kexec_file.c | 16 +++----- arch/arm64/mm/init.c | 5 ++- arch/loongarch/kernel/machine_kexec_file.c | 12 ------ arch/powerpc/kexec/ranges.c | 16 ++------ arch/riscv/kernel/machine_kexec_file.c | 15 ++++--- arch/riscv/mm/init.c | 5 ++- arch/x86/kernel/crash.c | 39 +------------------ kernel/crash_core.c | 28 +++++++++++++ 9 files changed, 61 insertions(+), 91 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/4] fix cve-2025-40300
by Bowen You 04 Feb '26

04 Feb '26

*** BLURB HERE *** Bowen You (1): config: enable CONFIG_MITIGATION_VMESCAPE by default on x86 Pawan Gupta (3): x86/vmscape: Add conditional IBPB mitigation x86/vmscape: Enumerate VMSCAPE bug x86/vmscape: Enable the mitigation .../ABI/testing/sysfs-devices-system-cpu | 1 + .../admin-guide/kernel-parameters.txt | 11 +++ arch/x86/Kconfig | 9 ++ arch/x86/configs/openeuler_defconfig | 1 + arch/x86/include/asm/cpufeatures.h | 2 + arch/x86/include/asm/entry-common.h | 7 ++ arch/x86/include/asm/nospec-branch.h | 2 + arch/x86/kernel/cpu/bugs.c | 85 +++++++++++++++++++ arch/x86/kernel/cpu/common.c | 58 +++++++++---- arch/x86/kvm/x86.c | 9 ++ drivers/base/cpu.c | 3 + 11 files changed, 170 insertions(+), 18 deletions(-) -- 2.34.1

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[PATCH OLK-6.6] null_blk: fix kmemleak by releasing references to fault configfs items
by Zheng Qixing 04 Feb '26

04 Feb '26

From: Nilay Shroff <nilay(a)linux.ibm.com> stable inclusion from stable-v6.6.122 commit 1a3286edf4d48ce37f8982ff3c3b65159a5ecbb2 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13556 CVE: CVE-2026-23032 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------ commit 40b94ec7edbbb867c4e26a1a43d2b898f04b93c5 upstream. When CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION is enabled, the null-blk driver sets up fault injection support by creating the timeout_inject, requeue_inject, and init_hctx_fault_inject configfs items as children of the top-level nullbX configfs group. However, when the nullbX device is removed, the references taken to these fault-config configfs items are not released. As a result, kmemleak reports a memory leak, for example: unreferenced object 0xc00000021ff25c40 (size 32): comm "mkdir", pid 10665, jiffies 4322121578 hex dump (first 32 bytes): 69 6e 69 74 5f 68 63 74 78 5f 66 61 75 6c 74 5f init_hctx_fault_ 69 6e 6a 65 63 74 00 88 00 00 00 00 00 00 00 00 inject.......... backtrace (crc 1a018c86): __kmalloc_node_track_caller_noprof+0x494/0xbd8 kvasprintf+0x74/0xf4 config_item_set_name+0xf0/0x104 config_group_init_type_name+0x48/0xfc fault_config_init+0x48/0xf0 0xc0080000180559e4 configfs_mkdir+0x304/0x814 vfs_mkdir+0x49c/0x604 do_mkdirat+0x314/0x3d0 sys_mkdir+0xa0/0xd8 system_call_exception+0x1b0/0x4f0 system_call_vectored_common+0x15c/0x2ec Fix this by explicitly releasing the references to the fault-config configfs items when dropping the reference to the top-level nullbX configfs group. Cc: stable(a)vger.kernel.org Reviewed-by: Chaitanya Kulkarni <kch(a)nvidia.com> Fixes: bb4c19e030f4 ("block: null_blk: make fault-injection dynamically configurable per device") Signed-off-by: Nilay Shroff <nilay(a)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: Zheng Qixing <zhengqixing(a)huawei.com> --- drivers/block/null_blk/main.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 97ed3bd9707f..217a6b788dfa 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -622,12 +622,22 @@ static void nullb_add_fault_config(struct nullb_device *dev) configfs_add_default_group(&dev->init_hctx_fault_config.group, &dev->group); } +static void nullb_del_fault_config(struct nullb_device *dev) +{ + config_item_put(&dev->init_hctx_fault_config.group.cg_item); + config_item_put(&dev->requeue_config.group.cg_item); + config_item_put(&dev->timeout_config.group.cg_item); +} + #else static void nullb_add_fault_config(struct nullb_device *dev) { } +static void nullb_del_fault_config(struct nullb_device *dev) +{ +} #endif static struct @@ -659,7 +669,7 @@ nullb_group_drop_item(struct config_group *group, struct config_item *item) null_del_dev(dev->nullb); mutex_unlock(&lock); } - + nullb_del_fault_config(dev); config_item_put(item); } -- 2.39.2

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[PATCH OLK-6.6] RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly
by Wang Tao 04 Feb '26

04 Feb '26

From: Jason Gunthorpe <jgg(a)nvidia.com> stable inclusion from stable-v6.6.120 commit 9d85524789c2f17c0e87de8d596bcccc3683a1fc category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13407 CVE: CVE-2025-71096 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit a7b8e876e0ef0232b8076972c57ce9a7286b47ca upstream. The netlink response for RDMA_NL_LS_OP_IP_RESOLVE should always have a LS_NLA_TYPE_DGID attribute, it is invalid if it does not. Use the nl parsing logic properly and call nla_parse_deprecated() to fill the nlattrs array and then directly index that array to get the data for the DGID. Just fail if it is NULL. Remove the for loop searching for the nla, and squash the validation and parsing into one function. Fixes an uninitialized read from the stack triggered by userspace if it does not provide the DGID to a kernel initiated RDMA_NL_LS_OP_IP_RESOLVE query. BUG: KMSAN: uninit-value in hex_byte_pack include/linux/hex.h:13 [inline] BUG: KMSAN: uninit-value in ip6_string+0xef4/0x13a0 lib/vsprintf.c:1490 hex_byte_pack include/linux/hex.h:13 [inline] ip6_string+0xef4/0x13a0 lib/vsprintf.c:1490 ip6_addr_string+0x18a/0x3e0 lib/vsprintf.c:1509 ip_addr_string+0x245/0xee0 lib/vsprintf.c:1633 pointer+0xc09/0x1bd0 lib/vsprintf.c:2542 vsnprintf+0xf8a/0x1bd0 lib/vsprintf.c:2930 vprintk_store+0x3ae/0x1530 kernel/printk/printk.c:2279 vprintk_emit+0x307/0xcd0 kernel/printk/printk.c:2426 vprintk_default+0x3f/0x50 kernel/printk/printk.c:2465 vprintk+0x36/0x50 kernel/printk/printk_safe.c:82 _printk+0x17e/0x1b0 kernel/printk/printk.c:2475 ib_nl_process_good_ip_rsep drivers/infiniband/core/addr.c:128 [inline] ib_nl_handle_ip_res_resp+0x963/0x9d0 drivers/infiniband/core/addr.c:141 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline] rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0xefa/0x11c0 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x333/0x3d0 net/socket.c:729 ____sys_sendmsg+0x7e0/0xd80 net/socket.c:2617 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2671 __sys_sendmsg+0x1aa/0x300 net/socket.c:2703 __compat_sys_sendmsg net/compat.c:346 [inline] __do_compat_sys_sendmsg net/compat.c:353 [inline] __se_compat_sys_sendmsg net/compat.c:350 [inline] __ia32_compat_sys_sendmsg+0xa4/0x100 net/compat.c:350 ia32_sys_call+0x3f6c/0x4310 arch/x86/include/generated/asm/syscalls_32.h:371 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:3 Link: https://patch.msgid.link/r/0-v1-3fbaef094271+2cf-rdma_op_ip_rslv_syz_jgg@nv… Cc: stable(a)vger.kernel.org Fixes: ae43f8286730 ("IB/core: Add IP to GID netlink offload") Reported-by: syzbot+938fcd548c303fe33c1a(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/68dc3dac.a00a0220.102ee.004f.GAE@google.com Signed-off-by: Jason Gunthorpe <jgg(a)nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Wang Tao <wangtao554(a)huawei.com> --- drivers/infiniband/core/addr.c | 33 ++++++++++----------------------- 1 file changed, 10 insertions(+), 23 deletions(-) diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c index f20dfe70f..0b58349b7 100644 --- a/drivers/infiniband/core/addr.c +++ b/drivers/infiniband/core/addr.c @@ -80,37 +80,25 @@ static const struct nla_policy ib_nl_addr_policy[LS_NLA_TYPE_MAX] = { .min = sizeof(struct rdma_nla_ls_gid)}, }; -static inline bool ib_nl_is_good_ip_resp(const struct nlmsghdr *nlh) +static void ib_nl_process_ip_rsep(const struct nlmsghdr *nlh) { struct nlattr *tb[LS_NLA_TYPE_MAX] = {}; + union ib_gid gid; + struct addr_req *req; + int found = 0; int ret; if (nlh->nlmsg_flags & RDMA_NL_LS_F_ERR) - return false; + return; ret = nla_parse_deprecated(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh), nlmsg_len(nlh), ib_nl_addr_policy, NULL); if (ret) - return false; - - return true; -} - -static void ib_nl_process_good_ip_rsep(const struct nlmsghdr *nlh) -{ - const struct nlattr *head, *curr; - union ib_gid gid; - struct addr_req *req; - int len, rem; - int found = 0; - - head = (const struct nlattr *)nlmsg_data(nlh); - len = nlmsg_len(nlh); + return; - nla_for_each_attr(curr, head, len, rem) { - if (curr->nla_type == LS_NLA_TYPE_DGID) - memcpy(&gid, nla_data(curr), nla_len(curr)); - } + if (!tb[LS_NLA_TYPE_DGID]) + return; + memcpy(&gid, nla_data(tb[LS_NLA_TYPE_DGID]), sizeof(gid)); spin_lock_bh(&lock); list_for_each_entry(req, &req_list, list) { @@ -137,8 +125,7 @@ int ib_nl_handle_ip_res_resp(struct sk_buff *skb, !(NETLINK_CB(skb).sk)) return -EPERM; - if (ib_nl_is_good_ip_resp(nlh)) - ib_nl_process_good_ip_rsep(nlh); + ib_nl_process_ip_rsep(nlh); return 0; } -- 2.34.1

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[PATCH OLK-6.6 0/2] fix CVE-2025-68768
by Li Xiasong 04 Feb '26

04 Feb '26

*** BLURB HERE *** Jakub Kicinski (2): inet: frags: add inet_frag_queue_flush() inet: frags: flush pending skbs in fqdir_pre_exit() include/net/inet_frag.h | 18 +++----------- include/net/ipv6_frag.h | 9 ++++--- net/ipv4/inet_fragment.c | 51 +++++++++++++++++++++++++++++++++++++--- net/ipv4/ip_fragment.c | 18 +++++++------- 4 files changed, 65 insertions(+), 31 deletions(-) -- 2.34.1

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[PATCH OLK-6.6] ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()
by Li Xiasong 04 Feb '26

04 Feb '26

From: Eric Dumazet <edumazet(a)google.com> mainline inclusion from mainline-v6.19-rc6 commit 81c734dae203757fb3c9eee6f9896386940776bd category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13513 CVE: CVE-2026-23003 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Blamed commit did not take care of VLAN encapsulations as spotted by syzbot [1]. Use skb_vlan_inet_prepare() instead of pskb_inet_may_pull(). [1] BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7a8/0x1fa0 include/net/inet_ecn.h:321 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP6_ECN_decapsulate+0x7a8/0x1fa0 include/net/inet_ecn.h:321 ip6ip6_dscp_ecn_decapsulate+0x16f/0x1b0 net/ipv6/ip6_tunnel.c:729 __ip6_tnl_rcv+0xed9/0x1b50 net/ipv6/ip6_tunnel.c:860 ip6_tnl_rcv+0xc3/0x100 net/ipv6/ip6_tunnel.c:903 gre_rcv+0x1529/0x1b90 net/ipv6/ip6_gre.c:-1 ip6_protocol_deliver_rcu+0x1c89/0x2c60 net/ipv6/ip6_input.c:438 ip6_input_finish+0x1f4/0x4a0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x9c/0x330 net/ipv6/ip6_input.c:500 ip6_mc_input+0x7ca/0xc10 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x958/0x990 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:318 [inline] ipv6_rcv+0xf1/0x3c0 net/ipv6/ip6_input.c:311 __netif_receive_skb_one_core net/core/dev.c:6139 [inline] __netif_receive_skb+0x1df/0xac0 net/core/dev.c:6252 netif_receive_skb_internal net/core/dev.c:6338 [inline] netif_receive_skb+0x57/0x630 net/core/dev.c:6397 tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485 tun_get_user+0x5c0e/0x6c60 drivers/net/tun.c:1953 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xbe2/0x15d0 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __x64_sys_write+0x1fb/0x4d0 fs/read_write.c:746 x64_sys_call+0x30ab/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4960 [inline] slab_alloc_node mm/slub.c:5263 [inline] kmem_cache_alloc_node_noprof+0x9e7/0x17a0 mm/slub.c:5315 kmalloc_reserve+0x13c/0x4b0 net/core/skbuff.c:586 __alloc_skb+0x805/0x1040 net/core/skbuff.c:690 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0xc5/0xa60 net/core/skbuff.c:6712 sock_alloc_send_pskb+0xacc/0xc60 net/core/sock.c:2995 tun_alloc_skb drivers/net/tun.c:1461 [inline] tun_get_user+0x1142/0x6c60 drivers/net/tun.c:1794 tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0xbe2/0x15d0 fs/read_write.c:686 ksys_write fs/read_write.c:738 [inline] __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __x64_sys_write+0x1fb/0x4d0 fs/read_write.c:746 x64_sys_call+0x30ab/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 6465 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Fixes: 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") Reported-by: syzbot+d4dda070f833dc5dc89a(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/695e88b2.050a0220.1c677c.036d.GAE@google.com… Signed-off-by: Eric Dumazet <edumazet(a)google.com> Link: https://patch.msgid.link/20260107163109.4188620-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Conflicts: net/ipv6/ip6_tunnel.c [conflicts due to not merge 9990ddf47d41 ("net: tunnel: make skb_vlan_inet_prepare() return drop reasons").] Signed-off-by: Li Xiasong <lixiasong1(a)huawei.com> --- net/ipv6/ip6_tunnel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index c70ff45649ad..8348b7e43c13 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -844,7 +844,7 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb, skb_reset_network_header(skb); - if (!pskb_inet_may_pull(skb)) { + if (!skb_vlan_inet_prepare(skb, true)) { DEV_STATS_INC(tunnel->dev, rx_length_errors); DEV_STATS_INC(tunnel->dev, rx_errors); goto drop; -- 2.34.1

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