CVE-2024-26961 (GCVE-0-2024-26961)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:19 – Updated: 2026-05-12 11:50
VLAI
Title
mac802154: fix llsec key resources release in mac802154_llsec_key_del
Summary
In the Linux kernel, the following vulnerability has been resolved: mac802154: fix llsec key resources release in mac802154_llsec_key_del mac802154_llsec_key_del() can free resources of a key directly without following the RCU rules for waiting before the end of a grace period. This may lead to use-after-free in case llsec_lookup_key() is traversing the list of keys in parallel with a key deletion: refcount_t: addition on 0; use-after-free. WARNING: CPU: 4 PID: 16000 at lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0 Modules linked in: CPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:refcount_warn_saturate+0x162/0x2a0 Call Trace: <TASK> llsec_lookup_key.isra.0+0x890/0x9e0 mac802154_llsec_encrypt+0x30c/0x9c0 ieee802154_subif_start_xmit+0x24/0x1e0 dev_hard_start_xmit+0x13e/0x690 sch_direct_xmit+0x2ae/0xbc0 __dev_queue_xmit+0x11dd/0x3c20 dgram_sendmsg+0x90b/0xd60 __sys_sendto+0x466/0x4c0 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x45/0xf0 entry_SYSCALL_64_after_hwframe+0x6e/0x76 Also, ieee802154_llsec_key_entry structures are not freed by mac802154_llsec_key_del(): unreferenced object 0xffff8880613b6980 (size 64): comm "iwpan", pid 2176, jiffies 4294761134 (age 60.475s) hex dump (first 32 bytes): 78 0d 8f 18 80 88 ff ff 22 01 00 00 00 00 ad de x......."....... 00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00 ................ backtrace: [<ffffffff81dcfa62>] __kmem_cache_alloc_node+0x1e2/0x2d0 [<ffffffff81c43865>] kmalloc_trace+0x25/0xc0 [<ffffffff88968b09>] mac802154_llsec_key_add+0xac9/0xcf0 [<ffffffff8896e41a>] ieee802154_add_llsec_key+0x5a/0x80 [<ffffffff8892adc6>] nl802154_add_llsec_key+0x426/0x5b0 [<ffffffff86ff293e>] genl_family_rcv_msg_doit+0x1fe/0x2f0 [<ffffffff86ff46d1>] genl_rcv_msg+0x531/0x7d0 [<ffffffff86fee7a9>] netlink_rcv_skb+0x169/0x440 [<ffffffff86ff1d88>] genl_rcv+0x28/0x40 [<ffffffff86fec15c>] netlink_unicast+0x53c/0x820 [<ffffffff86fecd8b>] netlink_sendmsg+0x93b/0xe60 [<ffffffff86b91b35>] ____sys_sendmsg+0xac5/0xca0 [<ffffffff86b9c3dd>] ___sys_sendmsg+0x11d/0x1c0 [<ffffffff86b9c65a>] __sys_sendmsg+0xfa/0x1d0 [<ffffffff88eadbf5>] do_syscall_64+0x45/0xf0 [<ffffffff890000ea>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 Handle the proper resource release in the RCU callback function mac802154_llsec_key_del_rcu(). Note that if llsec_lookup_key() finds a key, it gets a refcount via llsec_key_get() and locally copies key id from key_entry (which is a list element). So it's safe to call llsec_key_put() and free the list entry after the RCU grace period elapses. Found by Linux Verification Center (linuxtesting.org).
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < 068ab2759bc0b4daf0b964de61b2731449c86531 (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < d3d858650933d44ac12c1f31337e7110c2071821 (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < dcd51ab42b7a0431575689c5f74b8b6efd45fc2f (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < 20d3e1c8a1847497269f04d874b2a5818ec29e2d (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < 640297c3e897bd7e1481466a6a5cb9560f1edb88 (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < 49c8951680d7b76fceaee89dcfbab1363fb24fd1 (git)
Affected: 5d637d5aabd85132bd85779677d8acb708e0ed90 , < e8a1e58345cf40b7b272e08ac7b32328b2543e40 (git)
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Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.84 , ≤ 6.1.* (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmac802154: fix llsec key resources release in mac802154_llsec_key_del\\n\\nmac802154_llsec_key_del() can free resources of a key directly without\\nfollowing the RCU rules for waiting before the end of a grace period. This\\nmay lead to use-after-free in case llsec_lookup_key() is traversing the\\nlist of keys in parallel with a key deletion:\\n\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 4 PID: 16000 at lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0\\nModules linked in:\\nCPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0x162/0x2a0\\nCall Trace:\\n \u003cTASK\u003e\\n llsec_lookup_key.isra.0+0x890/0x9e0\\n mac802154_llsec_encrypt+0x30c/0x9c0\\n ieee802154_subif_start_xmit+0x24/0x1e0\\n dev_hard_start_xmit+0x13e/0x690\\n sch_direct_xmit+0x2ae/0xbc0\\n __dev_queue_xmit+0x11dd/0x3c20\\n dgram_sendmsg+0x90b/0xd60\\n __sys_sendto+0x466/0x4c0\\n __x64_sys_sendto+0xe0/0x1c0\\n do_syscall_64+0x45/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nAlso, ieee802154_llsec_key_entry structures are not freed by\\nmac802154_llsec_key_del():\\n\\nunreferenced object 0xffff8880613b6980 (size 64):\\n  comm \\\"iwpan\\\", pid 2176, jiffies 4294761134 (age 60.475s)\\n  hex dump (first 32 bytes):\\n    78 0d 8f 18 80 88 ff ff 22 01 00 00 00 00 ad de  x.......\\\".......\\n    00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00  ................\\n  backtrace:\\n    [\u003cffffffff81dcfa62\u003e] __kmem_cache_alloc_node+0x1e2/0x2d0\\n    [\u003cffffffff81c43865\u003e] kmalloc_trace+0x25/0xc0\\n    [\u003cffffffff88968b09\u003e] mac802154_llsec_key_add+0xac9/0xcf0\\n    [\u003cffffffff8896e41a\u003e] ieee802154_add_llsec_key+0x5a/0x80\\n    [\u003cffffffff8892adc6\u003e] nl802154_add_llsec_key+0x426/0x5b0\\n    [\u003cffffffff86ff293e\u003e] genl_family_rcv_msg_doit+0x1fe/0x2f0\\n    [\u003cffffffff86ff46d1\u003e] genl_rcv_msg+0x531/0x7d0\\n    [\u003cffffffff86fee7a9\u003e] netlink_rcv_skb+0x169/0x440\\n    [\u003cffffffff86ff1d88\u003e] genl_rcv+0x28/0x40\\n    [\u003cffffffff86fec15c\u003e] netlink_unicast+0x53c/0x820\\n    [\u003cffffffff86fecd8b\u003e] netlink_sendmsg+0x93b/0xe60\\n    [\u003cffffffff86b91b35\u003e] ____sys_sendmsg+0xac5/0xca0\\n    [\u003cffffffff86b9c3dd\u003e] ___sys_sendmsg+0x11d/0x1c0\\n    [\u003cffffffff86b9c65a\u003e] __sys_sendmsg+0xfa/0x1d0\\n    [\u003cffffffff88eadbf5\u003e] do_syscall_64+0x45/0xf0\\n    [\u003cffffffff890000ea\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nHandle the proper resource release in the RCU callback function\\nmac802154_llsec_key_del_rcu().\\n\\nNote that if llsec_lookup_key() finds a key, it gets a refcount via\\nllsec_key_get() and locally copies key id from key_entry (which is a\\nlist element). So it\u0027s safe to call llsec_key_put() and free the list\\nentry after the RCU grace period elapses.\\n\\nFound by Linux Verification Center (linuxtesting.org).\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: mac802154: corrige la liberaci\\u00f3n de recursos de clave llsec en mac802154_llsec_key_del mac802154_llsec_key_del() puede liberar recursos de una clave directamente sin seguir las reglas de RCU para esperar antes del final de un per\\u00edodo de gracia. Esto puede llevar a un use-after-free en caso de que llsec_lookup_key() est\\u00e9 recorriendo la lista de claves en paralelo con una eliminaci\\u00f3n de clave: refcount_t: suma en 0; use-after-free. ADVERTENCIA: CPU: 4 PID: 16000 en lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0 M\\u00f3dulos vinculados en: CPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19 Nombre de hardware: PC est\\u00e1ndar QEMU ( i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 RIP: 0010:refcount_warn_saturate+0x162/0x2a0 Seguimiento de llamadas:  llsec_lookup_key.isra.0+0x890/0x9e0 mac802154_llsec_ cifrar+ 0x30c/0x9c0 ieee802154_subif_start_xmit+0x24/0x1e0 dev_hard_start_xmit+0x13e/0x690 sch_direct_xmit+0x2ae/0xbc0 __dev_queue_xmit+0x11dd/0x3c20 dgram_sendmsg+0x90b/0xd60 __ sys_sendto+0x466/0x4c0 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x45/0xf0 Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Adem\\u00e1s, Las estructuras ieee802154_llsec_key_entry no son liberadas por mac802154_llsec_key_del(): objeto sin referencia 0xffff8880613b6980 (tama\\u00f1o 64): comm \\\"iwpan\\\", pid 2176, jiffies 4294761134 (edad 60,475 s) volcado hexadecimal (primeros 32 bytes): 8 0d 8f 18 80 88 y siguientes y siguientes 22 01 00 00 00 00 ad de x.......\\\"....... 00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00 ........... ..... retroceso: [] __kmem_cache_alloc_node+0x1e2/0x2d0 [] kmalloc_trace+0x25/0xc0 [] mac802154_llsec_key_add+0xac9/0xcf0 ffffffff8896e41a\u0026gt;] ieee802154_add_llsec_key+0x5a/0x80 [] nl802154_add_llsec_key+0x426/0x5b0 [] genl_family_rcv_msg_doit+0x1fe/0x2f0 [] genl_rcv_msg+0x531/0x7d0 [] netlink_rcv_skb+0x169/0x440 [] genl_rcv+0x28/0x40 [] netlink_unicast+0x53c/0x820 [] netlink_sendmsg+0x93b/0xe60 [] ____sys_sendmsg+0xac5/0xca0 [] ___sys_sendmsg+0x11d/0 x1c0 [] __sys_sendmsg+0xfa/0x1d0 [] do_syscall_64+0x45/0xf0 [] Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Maneja la liberaci\\u00f3n adecuada de recursos en la funci\\u00f3n de devoluci\\u00f3n de llamada de RCU mac802154_llsec_key_del_rcu(). Tenga en cuenta que si llsec_lookup_key() encuentra una clave, obtiene un recuento a trav\\u00e9s de llsec_key_get() y copia localmente la identificaci\\u00f3n de la clave de key_entry (que es un elemento de la lista). Por lo tanto, es seguro llamar a llsec_key_put() y liberar la entrada de la lista despu\\u00e9s de que transcurra el per\\u00edodo de gracia de RCU. Encontrado por el Centro de verificaci\\u00f3n de Linux (linuxtesting.org).\"}]",
      "id": "CVE-2024-26961",
      "lastModified": "2024-12-23T13:37:44.197",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-05-01T06:15:12.437",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/068ab2759bc0b4daf0b964de61b2731449c86531\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/20d3e1c8a1847497269f04d874b2a5818ec29e2d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49c8951680d7b76fceaee89dcfbab1363fb24fd1\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/640297c3e897bd7e1481466a6a5cb9560f1edb88\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/d3d858650933d44ac12c1f31337e7110c2071821\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dcd51ab42b7a0431575689c5f74b8b6efd45fc2f\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e8a1e58345cf40b7b272e08ac7b32328b2543e40\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/068ab2759bc0b4daf0b964de61b2731449c86531\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/20d3e1c8a1847497269f04d874b2a5818ec29e2d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49c8951680d7b76fceaee89dcfbab1363fb24fd1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/640297c3e897bd7e1481466a6a5cb9560f1edb88\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/d3d858650933d44ac12c1f31337e7110c2071821\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dcd51ab42b7a0431575689c5f74b8b6efd45fc2f\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/e8a1e58345cf40b7b272e08ac7b32328b2543e40\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-21T00:13:24.000Z",
      "cve": "CVE-2024-26961",
      "id": "msrc_CVE-2024-26961",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "mac802154: fix llsec key resources release in mac802154_llsec_key_del",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26961.json",
      "version": "14"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26961\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:12.437\",\"lastModified\":\"2026-06-17T07:18:48.090\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmac802154: fix llsec key resources release in mac802154_llsec_key_del\\n\\nmac802154_llsec_key_del() can free resources of a key directly without\\nfollowing the RCU rules for waiting before the end of a grace period. This\\nmay lead to use-after-free in case llsec_lookup_key() is traversing the\\nlist of keys in parallel with a key deletion:\\n\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 4 PID: 16000 at lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0\\nModules linked in:\\nCPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0x162/0x2a0\\nCall Trace:\\n \u003cTASK\u003e\\n llsec_lookup_key.isra.0+0x890/0x9e0\\n mac802154_llsec_encrypt+0x30c/0x9c0\\n ieee802154_subif_start_xmit+0x24/0x1e0\\n dev_hard_start_xmit+0x13e/0x690\\n sch_direct_xmit+0x2ae/0xbc0\\n __dev_queue_xmit+0x11dd/0x3c20\\n dgram_sendmsg+0x90b/0xd60\\n __sys_sendto+0x466/0x4c0\\n __x64_sys_sendto+0xe0/0x1c0\\n do_syscall_64+0x45/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nAlso, ieee802154_llsec_key_entry structures are not freed by\\nmac802154_llsec_key_del():\\n\\nunreferenced object 0xffff8880613b6980 (size 64):\\n  comm \\\"iwpan\\\", pid 2176, jiffies 4294761134 (age 60.475s)\\n  hex dump (first 32 bytes):\\n    78 0d 8f 18 80 88 ff ff 22 01 00 00 00 00 ad de  x.......\\\".......\\n    00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00  ................\\n  backtrace:\\n    [\u003cffffffff81dcfa62\u003e] __kmem_cache_alloc_node+0x1e2/0x2d0\\n    [\u003cffffffff81c43865\u003e] kmalloc_trace+0x25/0xc0\\n    [\u003cffffffff88968b09\u003e] mac802154_llsec_key_add+0xac9/0xcf0\\n    [\u003cffffffff8896e41a\u003e] ieee802154_add_llsec_key+0x5a/0x80\\n    [\u003cffffffff8892adc6\u003e] nl802154_add_llsec_key+0x426/0x5b0\\n    [\u003cffffffff86ff293e\u003e] genl_family_rcv_msg_doit+0x1fe/0x2f0\\n    [\u003cffffffff86ff46d1\u003e] genl_rcv_msg+0x531/0x7d0\\n    [\u003cffffffff86fee7a9\u003e] netlink_rcv_skb+0x169/0x440\\n    [\u003cffffffff86ff1d88\u003e] genl_rcv+0x28/0x40\\n    [\u003cffffffff86fec15c\u003e] netlink_unicast+0x53c/0x820\\n    [\u003cffffffff86fecd8b\u003e] netlink_sendmsg+0x93b/0xe60\\n    [\u003cffffffff86b91b35\u003e] ____sys_sendmsg+0xac5/0xca0\\n    [\u003cffffffff86b9c3dd\u003e] ___sys_sendmsg+0x11d/0x1c0\\n    [\u003cffffffff86b9c65a\u003e] __sys_sendmsg+0xfa/0x1d0\\n    [\u003cffffffff88eadbf5\u003e] do_syscall_64+0x45/0xf0\\n    [\u003cffffffff890000ea\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nHandle the proper resource release in the RCU callback function\\nmac802154_llsec_key_del_rcu().\\n\\nNote that if llsec_lookup_key() finds a key, it gets a refcount via\\nllsec_key_get() and locally copies key id from key_entry (which is a\\nlist element). So it\u0027s safe to call llsec_key_put() and free the list\\nentry after the RCU grace period elapses.\\n\\nFound by Linux Verification Center (linuxtesting.org).\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mac802154: corrige la liberaci\u00f3n de recursos de clave llsec en mac802154_llsec_key_del mac802154_llsec_key_del() puede liberar recursos de una clave directamente sin seguir las reglas de RCU para esperar antes del final de un per\u00edodo de gracia. Esto puede llevar a un use-after-free en caso de que llsec_lookup_key() est\u00e9 recorriendo la lista de claves en paralelo con una eliminaci\u00f3n de clave: refcount_t: suma en 0; use-after-free. ADVERTENCIA: CPU: 4 PID: 16000 en lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0 M\u00f3dulos vinculados en: CPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19 Nombre de hardware: PC est\u00e1ndar QEMU ( i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 RIP: 0010:refcount_warn_saturate+0x162/0x2a0 Seguimiento de llamadas:  llsec_lookup_key.isra.0+0x890/0x9e0 mac802154_llsec_ cifrar+ 0x30c/0x9c0 ieee802154_subif_start_xmit+0x24/0x1e0 dev_hard_start_xmit+0x13e/0x690 sch_direct_xmit+0x2ae/0xbc0 __dev_queue_xmit+0x11dd/0x3c20 dgram_sendmsg+0x90b/0xd60 __ sys_sendto+0x466/0x4c0 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x45/0xf0 Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Adem\u00e1s, Las estructuras ieee802154_llsec_key_entry no son liberadas por mac802154_llsec_key_del(): objeto sin referencia 0xffff8880613b6980 (tama\u00f1o 64): comm \\\"iwpan\\\", pid 2176, jiffies 4294761134 (edad 60,475 s) volcado hexadecimal (primeros 32 bytes): 8 0d 8f 18 80 88 y siguientes y siguientes 22 01 00 00 00 00 ad de x.......\\\"....... 00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00 ........... ..... retroceso: [] __kmem_cache_alloc_node+0x1e2/0x2d0 [] kmalloc_trace+0x25/0xc0 [] mac802154_llsec_key_add+0xac9/0xcf0 ffffffff8896e41a\u0026gt;] ieee802154_add_llsec_key+0x5a/0x80 [] nl802154_add_llsec_key+0x426/0x5b0 [] genl_family_rcv_msg_doit+0x1fe/0x2f0 [] genl_rcv_msg+0x531/0x7d0 [] netlink_rcv_skb+0x169/0x440 [] genl_rcv+0x28/0x40 [] netlink_unicast+0x53c/0x820 [] netlink_sendmsg+0x93b/0xe60 [] ____sys_sendmsg+0xac5/0xca0 [] ___sys_sendmsg+0x11d/0 x1c0 [] __sys_sendmsg+0xfa/0x1d0 [] do_syscall_64+0x45/0xf0 [] Entry_SYSCALL_64_after_hwframe+0x6e/0x76 Maneja la liberaci\u00f3n adecuada de recursos en la funci\u00f3n de devoluci\u00f3n de llamada de RCU mac802154_llsec_key_del_rcu(). Tenga en cuenta que si llsec_lookup_key() encuentra una clave, obtiene un recuento a trav\u00e9s de llsec_key_get() y copia localmente la identificaci\u00f3n de la clave de key_entry (que es un elemento de la lista). Por lo tanto, es seguro llamar a llsec_key_put() y liberar la entrada de la lista despu\u00e9s de que transcurra el per\u00edodo de gracia de RCU. Encontrado por el Centro de verificaci\u00f3n de Linux 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:09:38+00:00",
      "cve": "CVE-2024-26961",
      "id": "CVE-2024-26961",
      "initial_release_date": "2024-05-01T00:00:00+00:00",
      "product_status:fixed": "929",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26961.json",
      "version": "3"
    },
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This\\nmay lead to use-after-free in case llsec_lookup_key() is traversing the\\nlist of keys in parallel with a key deletion:\\n\\nrefcount_t: addition on 0; use-after-free.\\nWARNING: CPU: 4 PID: 16000 at lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0\\nModules linked in:\\nCPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nRIP: 0010:refcount_warn_saturate+0x162/0x2a0\\nCall Trace:\\n \u003cTASK\u003e\\n llsec_lookup_key.isra.0+0x890/0x9e0\\n mac802154_llsec_encrypt+0x30c/0x9c0\\n ieee802154_subif_start_xmit+0x24/0x1e0\\n dev_hard_start_xmit+0x13e/0x690\\n sch_direct_xmit+0x2ae/0xbc0\\n __dev_queue_xmit+0x11dd/0x3c20\\n dgram_sendmsg+0x90b/0xd60\\n __sys_sendto+0x466/0x4c0\\n __x64_sys_sendto+0xe0/0x1c0\\n do_syscall_64+0x45/0xf0\\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nAlso, ieee802154_llsec_key_entry structures are not freed by\\nmac802154_llsec_key_del():\\n\\nunreferenced object 0xffff8880613b6980 (size 64):\\n  comm \\\"iwpan\\\", pid 2176, jiffies 4294761134 (age 60.475s)\\n  hex dump (first 32 bytes):\\n    78 0d 8f 18 80 88 ff ff 22 01 00 00 00 00 ad de  x.......\\\".......\\n    00 00 00 00 00 00 00 00 03 00 cd ab 00 00 00 00  ................\\n  backtrace:\\n    [\u003cffffffff81dcfa62\u003e] __kmem_cache_alloc_node+0x1e2/0x2d0\\n    [\u003cffffffff81c43865\u003e] kmalloc_trace+0x25/0xc0\\n    [\u003cffffffff88968b09\u003e] mac802154_llsec_key_add+0xac9/0xcf0\\n    [\u003cffffffff8896e41a\u003e] ieee802154_add_llsec_key+0x5a/0x80\\n    [\u003cffffffff8892adc6\u003e] nl802154_add_llsec_key+0x426/0x5b0\\n    [\u003cffffffff86ff293e\u003e] genl_family_rcv_msg_doit+0x1fe/0x2f0\\n    [\u003cffffffff86ff46d1\u003e] genl_rcv_msg+0x531/0x7d0\\n    [\u003cffffffff86fee7a9\u003e] netlink_rcv_skb+0x169/0x440\\n    [\u003cffffffff86ff1d88\u003e] genl_rcv+0x28/0x40\\n    [\u003cffffffff86fec15c\u003e] netlink_unicast+0x53c/0x820\\n    [\u003cffffffff86fecd8b\u003e] netlink_sendmsg+0x93b/0xe60\\n    [\u003cffffffff86b91b35\u003e] ____sys_sendmsg+0xac5/0xca0\\n    [\u003cffffffff86b9c3dd\u003e] ___sys_sendmsg+0x11d/0x1c0\\n    [\u003cffffffff86b9c65a\u003e] __sys_sendmsg+0xfa/0x1d0\\n    [\u003cffffffff88eadbf5\u003e] do_syscall_64+0x45/0xf0\\n    [\u003cffffffff890000ea\u003e] entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n\\nHandle the proper resource release in the RCU callback function\\nmac802154_llsec_key_del_rcu().\\n\\nNote that if llsec_lookup_key() finds a key, it gets a refcount via\\nllsec_key_get() and locally copies key id from key_entry (which is a\\nlist element). So it\u0027s safe to call llsec_key_put() and free the list\\nentry after the RCU grace period elapses.\\n\\nFound by Linux Verification Center (linuxtesting.org).\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.215\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.154\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.84\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.24\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.12\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.3\", \"versionStartIncluding\": \"3.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"3.16\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:07:44.061Z\"}}}",
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  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.