CVE-2024-56661 (GCVE-0-2024-56661)
Vulnerability from cvelistv5
Published
2024-12-27 15:06
Modified
2025-10-01 20:07
Summary
In the Linux kernel, the following vulnerability has been resolved: tipc: fix NULL deref in cleanup_bearer() syzbot found [1] that after blamed commit, ub->ubsock->sk was NULL when attempting the atomic_dec() : atomic_dec(&tipc_net(sock_net(ub->ubsock->sk))->wq_count); Fix this by caching the tipc_net pointer. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events cleanup_bearer RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Impacted products
Vendor Product Version
Linux Linux Version: 4e69457f9dfae67435f3ccf29008768eae860415
Version: 650ee9a22d7a2de8999fac2d45983597a0c22359
Version: d2a4894f238551eae178904e7f45af87577074fd
Version: d62d5180c036eeac09f80660edc7a602b369125f
Version: d00d4470bf8c4282617a3a10e76b20a9c7e4cffa
Version: e48b211c4c59062cb6dd6c2c37c51a7cc235a464
Version: 6a2fa13312e51a621f652d522d7e2df7066330b6
Create a notification for this product.
   Linux Linux Version: 5.4.287   
Version: 5.10.231   
Version: 5.15.174   
Version: 6.1.120   
Version: 6.6.66   
Version: 6.12.5   
Create a notification for this product.
Show details on NVD website


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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix NULL deref in cleanup_bearer()\n\nsyzbot found [1] that after blamed commit, ub-\u003eubsock-\u003esk\nwas NULL when attempting the atomic_dec() :\n\natomic_dec(\u0026tipc_net(sock_net(ub-\u003eubsock-\u003esk))-\u003ewq_count);\n\nFix this by caching the tipc_net pointer.\n\n[1]\n\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\nCPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nWorkqueue: events cleanup_bearer\n RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline]\n RIP: 0010:sock_net include/net/sock.h:655 [inline]\n RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820\nCode: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 \u003c42\u003e 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b\nRSP: 0018:ffffc9000410fb70 EFLAGS: 00010206\nRAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00\nRDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900\nRBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20\nR10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980\nR13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918\nFS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400"
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          "url": "https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56661",
    "datePublished": "2024-12-27T15:06:23.928Z",
    "dateReserved": "2024-12-27T15:00:39.843Z",
    "dateUpdated": "2025-10-01T20:07:10.233Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56661\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:25.960\",\"lastModified\":\"2025-10-01T20:17:37.817\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntipc: fix NULL deref in cleanup_bearer()\\n\\nsyzbot found [1] that after blamed commit, ub-\u003eubsock-\u003esk\\nwas NULL when attempting the atomic_dec() :\\n\\natomic_dec(\u0026tipc_net(sock_net(ub-\u003eubsock-\u003esk))-\u003ewq_count);\\n\\nFix this by caching the tipc_net pointer.\\n\\n[1]\\n\\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI\\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\\nCPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\\nWorkqueue: events cleanup_bearer\\n RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline]\\n RIP: 0010:sock_net include/net/sock.h:655 [inline]\\n RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820\\nCode: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 \u003c42\u003e 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b\\nRSP: 0018:ffffc9000410fb70 EFLAGS: 00010206\\nRAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00\\nRDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900\\nRBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20\\nR10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980\\nR13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918\\nFS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tipc: se corrige la deref NULL en cleanup_bearer() syzbot encontr\u00f3 [1] que despu\u00e9s de el commit culpada, ub-\u0026gt;ubsock-\u0026gt;sk era NULL al intentar atomic_dec() : atomic_dec(\u0026amp;tipc_net(sock_net(ub-\u0026gt;ubsock-\u0026gt;sk))-\u0026gt;wq_count); Solucione esto almacenando en cach\u00e9 el puntero tipc_net. [1] Ups: error de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref en el rango [0x000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 No contaminado 6.13.0-rc1-next-20241203-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 Cola de trabajo: eventos cleanup_bearer RIP: 0010:read_pnet include/net/net_namespace.h:387 [en l\u00ednea] RIP: 0010:sock_net include/net/sock.h:655 [en l\u00ednea] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 C\u00f3digo: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 \u0026lt;42\u0026gt; 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0 DR0: 00000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56661\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T20:00:02.292405Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:45:14.089Z\"}}], \"cna\": {\"title\": \"tipc: fix NULL deref in cleanup_bearer()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4e69457f9dfae67435f3ccf29008768eae860415\", \"lessThan\": \"d1d4dfb189a115734bff81c411bc58d9e348db7d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"650ee9a22d7a2de8999fac2d45983597a0c22359\", \"lessThan\": \"a771f349c95d3397636861a0a6462d4a7a7ecb25\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d2a4894f238551eae178904e7f45af87577074fd\", \"lessThan\": \"07b569eda6fe6a1e83be5a587abee12d1303f95e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d62d5180c036eeac09f80660edc7a602b369125f\", \"lessThan\": \"754ec823ee53422361da7958a8c8bf3275426912\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d00d4470bf8c4282617a3a10e76b20a9c7e4cffa\", \"lessThan\": \"89ecda492d0a37fd00aaffc4151f1f44c26d93ac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e48b211c4c59062cb6dd6c2c37c51a7cc235a464\", \"lessThan\": \"a852c82eda4991e21610837aaa160965be71f5cc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6a2fa13312e51a621f652d522d7e2df7066330b6\", \"lessThan\": \"b04d86fff66b15c07505d226431f808c15b1703c\", \"versionType\": \"git\"}], \"programFiles\": [\"net/tipc/udp_media.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4.287\", \"lessThan\": \"5.4.288\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.10.231\", \"lessThan\": \"5.10.232\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.174\", \"lessThan\": \"5.15.175\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.120\", \"lessThan\": \"6.1.121\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.66\", \"lessThan\": \"6.6.67\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.12.5\", \"lessThan\": \"6.12.6\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/tipc/udp_media.c\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d1d4dfb189a115734bff81c411bc58d9e348db7d\"}, {\"url\": \"https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25\"}, {\"url\": \"https://git.kernel.org/stable/c/07b569eda6fe6a1e83be5a587abee12d1303f95e\"}, {\"url\": \"https://git.kernel.org/stable/c/754ec823ee53422361da7958a8c8bf3275426912\"}, {\"url\": \"https://git.kernel.org/stable/c/89ecda492d0a37fd00aaffc4151f1f44c26d93ac\"}, {\"url\": \"https://git.kernel.org/stable/c/a852c82eda4991e21610837aaa160965be71f5cc\"}, {\"url\": \"https://git.kernel.org/stable/c/b04d86fff66b15c07505d226431f808c15b1703c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntipc: fix NULL deref in cleanup_bearer()\\n\\nsyzbot found [1] that after blamed commit, ub-\u003eubsock-\u003esk\\nwas NULL when attempting the atomic_dec() :\\n\\natomic_dec(\u0026tipc_net(sock_net(ub-\u003eubsock-\u003esk))-\u003ewq_count);\\n\\nFix this by caching the tipc_net pointer.\\n\\n[1]\\n\\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI\\nKASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]\\nCPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\\nWorkqueue: events cleanup_bearer\\n RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline]\\n RIP: 0010:sock_net include/net/sock.h:655 [inline]\\n RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820\\nCode: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 \u003c42\u003e 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b\\nRSP: 0018:ffffc9000410fb70 EFLAGS: 00010206\\nRAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00\\nRDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900\\nRBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20\\nR10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980\\nR13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918\\nFS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.288\", \"versionStartIncluding\": \"5.4.287\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.232\", \"versionStartIncluding\": \"5.10.231\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.175\", \"versionStartIncluding\": \"5.15.174\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.121\", \"versionStartIncluding\": \"6.1.120\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.67\", \"versionStartIncluding\": \"6.6.66\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.6\", \"versionStartIncluding\": \"6.12.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T10:01:25.583Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56661\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T20:07:10.233Z\", \"dateReserved\": \"2024-12-27T15:00:39.843Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T15:06:23.928Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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