CVE-2026-23150 - Vulnerability Details

Vendors	Products
Linux Subscribe	Linux Kernel Subscribe

Link	Providers
https://git.kernel.org/stable/c/165c34fb6068ff153e3fc99a932a80a9d5755709
https://git.kernel.org/stable/c/3098e5c8af0f4c8f7eebbb370798df8aa2e12ba5
https://git.kernel.org/stable/c/61858cbce6ca4bef9ed116c689a4be9520841339
https://git.kernel.org/stable/c/65e976e1f474ae3bf5681d7abafb8f3fdb34b8cc
https://git.kernel.org/stable/c/6734ff1ac6beba1d0c22dc9a3dc1849b773b511f
https://git.kernel.org/stable/c/ab660cb8e17aa93426d1e821c2cce60e4b9bc56a
https://git.kernel.org/stable/c/f8d002626d434f5fea9085e2557711c16a15cec6

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: Fix memleak in nfc_llcp_send_ui_frame(). syzbot reported various memory leaks related to NFC, struct nfc_llcp_sock, sk_buff, nfc_dev, etc. [0] The leading log hinted that nfc_llcp_send_ui_frame() failed to allocate skb due to sock_error(sk) being -ENXIO. ENXIO is set by nfc_llcp_socket_release() when struct nfc_llcp_local is destroyed by local_cleanup(). The problem is that there is no synchronisation between nfc_llcp_send_ui_frame() and local_cleanup(), and skb could be put into local->tx_queue after it was purged in local_cleanup(): CPU1 CPU2 ---- ---- nfc_llcp_send_ui_frame() local_cleanup() \|- do { ' \|- pdu = nfc_alloc_send_skb(..., &err) \| . \| \|- nfc_llcp_socket_release(local, false, ENXIO); \| \|- skb_queue_purge(&local->tx_queue); \| \| ' \| \|- skb_queue_tail(&local->tx_queue, pdu); \| ... \| \|- pdu = nfc_alloc_send_skb(..., &err) \| ^._________________________________.' local_cleanup() is called for struct nfc_llcp_local only after nfc_llcp_remove_local() unlinks it from llcp_devices. If we hold local->tx_queue.lock then, we can synchronise the thread and nfc_llcp_send_ui_frame(). Let's do that and check list_empty(&local->list) before queuing skb to local->tx_queue in nfc_llcp_send_ui_frame(). [0]: [ 56.074943][ T6096] llcp: nfc_llcp_send_ui_frame: Could not allocate PDU (error=-6) [ 64.318868][ T5813] kmemleak: 6 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff8881272f6800 (size 1024): comm "syz.0.17", pid 6096, jiffies 4294942766 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 27 00 03 40 00 00 00 00 00 00 00 00 00 00 00 00 '..@............ backtrace (crc da58d84d): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] __do_kmalloc_node mm/slub.c:5645 [inline] __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5658 kmalloc_noprof include/linux/slab.h:961 [inline] sk_prot_alloc+0x11a/0x1b0 net/core/sock.c:2239 sk_alloc+0x36/0x360 net/core/sock.c:2295 nfc_llcp_sock_alloc+0x37/0x130 net/nfc/llcp_sock.c:979 llcp_sock_create+0x71/0xd0 net/nfc/llcp_sock.c:1044 nfc_sock_create+0xc9/0xf0 net/nfc/af_nfc.c:31 __sock_create+0x1a9/0x340 net/socket.c:1605 sock_create net/socket.c:1663 [inline] __sys_socket_create net/socket.c:1700 [inline] __sys_socket+0xb9/0x1a0 net/socket.c:1747 __do_sys_socket net/socket.c:1761 [inline] __se_sys_socket net/socket.c:1759 [inline] __x64_sys_socket+0x1b/0x30 net/socket.c:1759 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88810fbd9800 (size 240): comm "syz.0.17", pid 6096, jiffies 4294942850 hex dump (first 32 bytes): 68 f0 ff 08 81 88 ff ff 68 f0 ff 08 81 88 ff ff h.......h....... 00 00 00 00 00 00 00 00 00 68 2f 27 81 88 ff ff .........h/'.... backtrace (crc 6cc652b1): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4979 [inline] slab_alloc_node mm/slub.c:5284 [inline] kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5336 __alloc_skb+0x203/0x240 net/core/skbuff.c:660 alloc_skb include/linux/skbuff.h:1383 [inline] alloc_skb_with_frags+0x69/0x3f0 net/core/sk ---truncated---
Title		nfc: llcp: Fix memleak in nfc_llcp_send_ui_frame().
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/165c34fb6068ff153e3fc99a932a80a9d5755709 https://git.kernel.org/stable/c/3098e5c8af0f4c8f7eebbb370798df8aa2e12ba5 https://git.kernel.org/stable/c/61858cbce6ca4bef9ed116c689a4be9520841339 https://git.kernel.org/stable/c/65e976e1f474ae3bf5681d7abafb8f3fdb34b8cc https://git.kernel.org/stable/c/6734ff1ac6beba1d0c22dc9a3dc1849b773b511f https://git.kernel.org/stable/c/ab660cb8e17aa93426d1e821c2cce60e4b9bc56a https://git.kernel.org/stable/c/f8d002626d434f5fea9085e2557711c16a15cec6

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23150", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.976Z", "datePublished": "2026-02-14T16:01:18.968Z", "dateUpdated": "2026-02-14T16:01:18.968Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-14T16:01:18.968Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: Fix memleak in nfc_llcp_send_ui_frame().\n\nsyzbot reported various memory leaks related to NFC, struct\nnfc_llcp_sock, sk_buff, nfc_dev, etc. [0]\n\nThe leading log hinted that nfc_llcp_send_ui_frame() failed\nto allocate skb due to sock_error(sk) being -ENXIO.\n\nENXIO is set by nfc_llcp_socket_release() when struct\nnfc_llcp_local is destroyed by local_cleanup().\n\nThe problem is that there is no synchronisation between\nnfc_llcp_send_ui_frame() and local_cleanup(), and skb\ncould be put into local->tx_queue after it was purged in\nlocal_cleanup():\n\n CPU1 CPU2\n ---- ----\n nfc_llcp_send_ui_frame() local_cleanup()\n |- do { '\n |- pdu = nfc_alloc_send_skb(..., &err)\n | .\n | |- nfc_llcp_socket_release(local, false, ENXIO);\n | |- skb_queue_purge(&local->tx_queue); |\n | ' |\n |- skb_queue_tail(&local->tx_queue, pdu); |\n ... |\n |- pdu = nfc_alloc_send_skb(..., &err) |\n ^._________________________________.'\n\nlocal_cleanup() is called for struct nfc_llcp_local only\nafter nfc_llcp_remove_local() unlinks it from llcp_devices.\n\nIf we hold local->tx_queue.lock then, we can synchronise\nthe thread and nfc_llcp_send_ui_frame().\n\nLet's do that and check list_empty(&local->list) before\nqueuing skb to local->tx_queue in nfc_llcp_send_ui_frame().\n\n[0]:\n[ 56.074943][ T6096] llcp: nfc_llcp_send_ui_frame: Could not allocate PDU (error=-6)\n[ 64.318868][ T5813] kmemleak: 6 new suspected memory leaks (see /sys/kernel/debug/kmemleak)\nBUG: memory leak\nunreferenced object 0xffff8881272f6800 (size 1024):\n comm \"syz.0.17\", pid 6096, jiffies 4294942766\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 27 00 03 40 00 00 00 00 00 00 00 00 00 00 00 00 '..@............\n backtrace (crc da58d84d):\n kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n slab_post_alloc_hook mm/slub.c:4979 [inline]\n slab_alloc_node mm/slub.c:5284 [inline]\n __do_kmalloc_node mm/slub.c:5645 [inline]\n __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5658\n kmalloc_noprof include/linux/slab.h:961 [inline]\n sk_prot_alloc+0x11a/0x1b0 net/core/sock.c:2239\n sk_alloc+0x36/0x360 net/core/sock.c:2295\n nfc_llcp_sock_alloc+0x37/0x130 net/nfc/llcp_sock.c:979\n llcp_sock_create+0x71/0xd0 net/nfc/llcp_sock.c:1044\n nfc_sock_create+0xc9/0xf0 net/nfc/af_nfc.c:31\n __sock_create+0x1a9/0x340 net/socket.c:1605\n sock_create net/socket.c:1663 [inline]\n __sys_socket_create net/socket.c:1700 [inline]\n __sys_socket+0xb9/0x1a0 net/socket.c:1747\n __do_sys_socket net/socket.c:1761 [inline]\n __se_sys_socket net/socket.c:1759 [inline]\n __x64_sys_socket+0x1b/0x30 net/socket.c:1759\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nBUG: memory leak\nunreferenced object 0xffff88810fbd9800 (size 240):\n comm \"syz.0.17\", pid 6096, jiffies 4294942850\n hex dump (first 32 bytes):\n 68 f0 ff 08 81 88 ff ff 68 f0 ff 08 81 88 ff ff h.......h.......\n 00 00 00 00 00 00 00 00 00 68 2f 27 81 88 ff ff .........h/'....\n backtrace (crc 6cc652b1):\n kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n slab_post_alloc_hook mm/slub.c:4979 [inline]\n slab_alloc_node mm/slub.c:5284 [inline]\n kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5336\n __alloc_skb+0x203/0x240 net/core/skbuff.c:660\n alloc_skb include/linux/skbuff.h:1383 [inline]\n alloc_skb_with_frags+0x69/0x3f0 net/core/sk\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/nfc/llcp_commands.c", "net/nfc/llcp_core.c"], "versions": [{"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "ab660cb8e17aa93426d1e821c2cce60e4b9bc56a", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "65e976e1f474ae3bf5681d7abafb8f3fdb34b8cc", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "6734ff1ac6beba1d0c22dc9a3dc1849b773b511f", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "f8d002626d434f5fea9085e2557711c16a15cec6", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "3098e5c8af0f4c8f7eebbb370798df8aa2e12ba5", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "61858cbce6ca4bef9ed116c689a4be9520841339", "status": "affected", "versionType": "git"}, {"version": "94f418a206648c9be6fd84d6681d6956b8f8b106", "lessThan": "165c34fb6068ff153e3fc99a932a80a9d5755709", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/nfc/llcp_commands.c", "net/nfc/llcp_core.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.249", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.123", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.69", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.9", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.10.249"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.123"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.12.69"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.18.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ab660cb8e17aa93426d1e821c2cce60e4b9bc56a"}, {"url": "https://git.kernel.org/stable/c/65e976e1f474ae3bf5681d7abafb8f3fdb34b8cc"}, {"url": "https://git.kernel.org/stable/c/6734ff1ac6beba1d0c22dc9a3dc1849b773b511f"}, {"url": "https://git.kernel.org/stable/c/f8d002626d434f5fea9085e2557711c16a15cec6"}, {"url": "https://git.kernel.org/stable/c/3098e5c8af0f4c8f7eebbb370798df8aa2e12ba5"}, {"url": "https://git.kernel.org/stable/c/61858cbce6ca4bef9ed116c689a4be9520841339"}, {"url": "https://git.kernel.org/stable/c/165c34fb6068ff153e3fc99a932a80a9d5755709"}], "title": "nfc: llcp: Fix memleak in nfc_llcp_send_ui_frame().", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: Fix memleak in nfc_llcp_send_ui_frame().\n\nsyzbot reported various memory leaks related to NFC, struct\nnfc_llcp_sock, sk_buff, nfc_dev, etc. [0]\n\nThe leading log hinted that nfc_llcp_send_ui_frame() failed\nto allocate skb due to sock_error(sk) being -ENXIO.\n\nENXIO is set by nfc_llcp_socket_release() when struct\nnfc_llcp_local is destroyed by local_cleanup().\n\nThe problem is that there is no synchronisation between\nnfc_llcp_send_ui_frame() and local_cleanup(), and skb\ncould be put into local->tx_queue after it was purged in\nlocal_cleanup():\n\n CPU1 CPU2\n ---- ----\n nfc_llcp_send_ui_frame() local_cleanup()\n |- do { '\n |- pdu = nfc_alloc_send_skb(..., &err)\n | .\n | |- nfc_llcp_socket_release(local, false, ENXIO);\n | |- skb_queue_purge(&local->tx_queue); |\n | ' |\n |- skb_queue_tail(&local->tx_queue, pdu); |\n ... |\n |- pdu = nfc_alloc_send_skb(..., &err) |\n ^._________________________________.'\n\nlocal_cleanup() is called for struct nfc_llcp_local only\nafter nfc_llcp_remove_local() unlinks it from llcp_devices.\n\nIf we hold local->tx_queue.lock then, we can synchronise\nthe thread and nfc_llcp_send_ui_frame().\n\nLet's do that and check list_empty(&local->list) before\nqueuing skb to local->tx_queue in nfc_llcp_send_ui_frame().\n\n[0]:\n[ 56.074943][ T6096] llcp: nfc_llcp_send_ui_frame: Could not allocate PDU (error=-6)\n[ 64.318868][ T5813] kmemleak: 6 new suspected memory leaks (see /sys/kernel/debug/kmemleak)\nBUG: memory leak\nunreferenced object 0xffff8881272f6800 (size 1024):\n comm \"syz.0.17\", pid 6096, jiffies 4294942766\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 27 00 03 40 00 00 00 00 00 00 00 00 00 00 00 00 '..@............\n backtrace (crc da58d84d):\n kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n slab_post_alloc_hook mm/slub.c:4979 [inline]\n slab_alloc_node mm/slub.c:5284 [inline]\n __do_kmalloc_node mm/slub.c:5645 [inline]\n __kmalloc_noprof+0x3e3/0x6b0 mm/slub.c:5658\n kmalloc_noprof include/linux/slab.h:961 [inline]\n sk_prot_alloc+0x11a/0x1b0 net/core/sock.c:2239\n sk_alloc+0x36/0x360 net/core/sock.c:2295\n nfc_llcp_sock_alloc+0x37/0x130 net/nfc/llcp_sock.c:979\n llcp_sock_create+0x71/0xd0 net/nfc/llcp_sock.c:1044\n nfc_sock_create+0xc9/0xf0 net/nfc/af_nfc.c:31\n __sock_create+0x1a9/0x340 net/socket.c:1605\n sock_create net/socket.c:1663 [inline]\n __sys_socket_create net/socket.c:1700 [inline]\n __sys_socket+0xb9/0x1a0 net/socket.c:1747\n __do_sys_socket net/socket.c:1761 [inline]\n __se_sys_socket net/socket.c:1759 [inline]\n __x64_sys_socket+0x1b/0x30 net/socket.c:1759\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nBUG: memory leak\nunreferenced object 0xffff88810fbd9800 (size 240):\n comm \"syz.0.17\", pid 6096, jiffies 4294942850\n hex dump (first 32 bytes):\n 68 f0 ff 08 81 88 ff ff 68 f0 ff 08 81 88 ff ff h.......h.......\n 00 00 00 00 00 00 00 00 00 68 2f 27 81 88 ff ff .........h/'....\n backtrace (crc 6cc652b1):\n kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n slab_post_alloc_hook mm/slub.c:4979 [inline]\n slab_alloc_node mm/slub.c:5284 [inline]\n kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5336\n __alloc_skb+0x203/0x240 net/core/skbuff.c:660\n alloc_skb include/linux/skbuff.h:1383 [inline]\n alloc_skb_with_frags+0x69/0x3f0 net/core/sk\n---truncated---"}], "id": "CVE-2026-23150", "lastModified": "2026-02-14T16:15:55.123", "metrics": {}, "published": "2026-02-14T16:15:55.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/165c34fb6068ff153e3fc99a932a80a9d5755709"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3098e5c8af0f4c8f7eebbb370798df8aa2e12ba5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61858cbce6ca4bef9ed116c689a4be9520841339"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/65e976e1f474ae3bf5681d7abafb8f3fdb34b8cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6734ff1ac6beba1d0c22dc9a3dc1849b773b511f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ab660cb8e17aa93426d1e821c2cce60e4b9bc56a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f8d002626d434f5fea9085e2557711c16a15cec6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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