CVE-2021-46983
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-12-19 07:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: Fix NULL deref when SEND is completed with error When running some traffic and taking down the link on peer, a retry counter exceeded error is received. This leads to nvmet_rdma_error_comp which tried accessing the cq_context to obtain the queue. The cq_context is no longer valid after the fix to use shared CQ mechanism and should be obtained similar to how it is obtained in other functions from the wc->qp. [ 905.786331] nvmet_rdma: SEND for CQE 0x00000000e3337f90 failed with status transport retry counter exceeded (12). [ 905.832048] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 905.839919] PGD 0 P4D 0 [ 905.842464] Oops: 0000 1 SMP NOPTI [ 905.846144] CPU: 13 PID: 1557 Comm: kworker/13:1H Kdump: loaded Tainted: G OE --------- - - 4.18.0-304.el8.x86_64 #1 [ 905.872135] RIP: 0010:nvmet_rdma_error_comp+0x5/0x1b [nvmet_rdma] [ 905.878259] Code: 19 4f c0 e8 89 b3 a5 f6 e9 5b e0 ff ff 0f b7 75 14 4c 89 ea 48 c7 c7 08 1a 4f c0 e8 71 b3 a5 f6 e9 4b e0 ff ff 0f 1f 44 00 00 <48> 8b 47 48 48 85 c0 74 08 48 89 c7 e9 98 bf 49 00 e9 c3 e3 ff ff [ 905.897135] RSP: 0018:ffffab601c45fe28 EFLAGS: 00010246 [ 905.902387] RAX: 0000000000000065 RBX: ffff9e729ea2f800 RCX: 0000000000000000 [ 905.909558] RDX: 0000000000000000 RSI: ffff9e72df9567c8 RDI: 0000000000000000 [ 905.916731] RBP: ffff9e729ea2b400 R08: 000000000000074d R09: 0000000000000074 [ 905.923903] R10: 0000000000000000 R11: ffffab601c45fcc0 R12: 0000000000000010 [ 905.931074] R13: 0000000000000000 R14: 0000000000000010 R15: ffff9e729ea2f400 [ 905.938247] FS: 0000000000000000(0000) GS:ffff9e72df940000(0000) knlGS:0000000000000000 [ 905.938249] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 905.950067] nvmet_rdma: SEND for CQE 0x00000000c7356cca failed with status transport retry counter exceeded (12). [ 905.961855] CR2: 0000000000000048 CR3: 000000678d010004 CR4: 00000000007706e0 [ 905.961855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 905.961856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 905.961857] PKRU: 55555554 [ 906.010315] Call Trace: [ 906.012778] __ib_process_cq+0x89/0x170 [ib_core] [ 906.017509] ib_cq_poll_work+0x26/0x80 [ib_core] [ 906.022152] process_one_work+0x1a7/0x360 [ 906.026182] ? create_worker+0x1a0/0x1a0 [ 906.030123] worker_thread+0x30/0x390 [ 906.033802] ? create_worker+0x1a0/0x1a0 [ 906.037744] kthread+0x116/0x130 [ 906.040988] ? kthread_flush_work_fn+0x10/0x10 [ 906.045456] ret_from_fork+0x1f/0x40
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17fb6dfa5162b89ecfa07df891a53afec321abe8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5bdb34466ad8370546dfa0497594fb1d6f2fed90Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64f3410c7bfc389b1a58611d0799f4a36ce4b6b5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cc365f9559b86802afc0208389f5c8d46b4ad61Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/17fb6dfa5162b89ecfa07df891a53afec321abe8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5bdb34466ad8370546dfa0497594fb1d6f2fed90Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/64f3410c7bfc389b1a58611d0799f4a36ce4b6b5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8cc365f9559b86802afc0208389f5c8d46b4ad61Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.9
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-rdma: Fix NULL deref when SEND is completed with error\n\nWhen running some traffic and taking down the link on peer, a\nretry counter exceeded error is received. This leads to\nnvmet_rdma_error_comp which tried accessing the cq_context to\nobtain the queue. The cq_context is no longer valid after the\nfix to use shared CQ mechanism and should be obtained similar\nto how it is obtained in other functions from the wc-\u003eqp.\n\n[ 905.786331] nvmet_rdma: SEND for CQE 0x00000000e3337f90 failed with status transport retry counter exceeded (12).\n[ 905.832048] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048\n[ 905.839919] PGD 0 P4D 0\n[ 905.842464] Oops: 0000 1 SMP NOPTI\n[ 905.846144] CPU: 13 PID: 1557 Comm: kworker/13:1H Kdump: loaded Tainted: G OE --------- - - 4.18.0-304.el8.x86_64 #1\n[ 905.872135] RIP: 0010:nvmet_rdma_error_comp+0x5/0x1b [nvmet_rdma]\n[ 905.878259] Code: 19 4f c0 e8 89 b3 a5 f6 e9 5b e0 ff ff 0f b7 75 14 4c 89 ea 48 c7 c7 08 1a 4f c0 e8 71 b3 a5 f6 e9 4b e0 ff ff 0f 1f 44 00 00 \u003c48\u003e 8b 47 48 48 85 c0 74 08 48 89 c7 e9 98 bf 49 00 e9 c3 e3 ff ff\n[ 905.897135] RSP: 0018:ffffab601c45fe28 EFLAGS: 00010246\n[ 905.902387] RAX: 0000000000000065 RBX: ffff9e729ea2f800 RCX: 0000000000000000\n[ 905.909558] RDX: 0000000000000000 RSI: ffff9e72df9567c8 RDI: 0000000000000000\n[ 905.916731] RBP: ffff9e729ea2b400 R08: 000000000000074d R09: 0000000000000074\n[ 905.923903] R10: 0000000000000000 R11: ffffab601c45fcc0 R12: 0000000000000010\n[ 905.931074] R13: 0000000000000000 R14: 0000000000000010 R15: ffff9e729ea2f400\n[ 905.938247] FS: 0000000000000000(0000) GS:ffff9e72df940000(0000) knlGS:0000000000000000\n[ 905.938249] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 905.950067] nvmet_rdma: SEND for CQE 0x00000000c7356cca failed with status transport retry counter exceeded (12).\n[ 905.961855] CR2: 0000000000000048 CR3: 000000678d010004 CR4: 00000000007706e0\n[ 905.961855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 905.961856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 905.961857] PKRU: 55555554\n[ 906.010315] Call Trace:\n[ 906.012778] __ib_process_cq+0x89/0x170 [ib_core]\n[ 906.017509] ib_cq_poll_work+0x26/0x80 [ib_core]\n[ 906.022152] process_one_work+0x1a7/0x360\n[ 906.026182] ? create_worker+0x1a0/0x1a0\n[ 906.030123] worker_thread+0x30/0x390\n[ 906.033802] ? create_worker+0x1a0/0x1a0\n[ 906.037744] kthread+0x116/0x130\n[ 906.040988] ? kthread_flush_work_fn+0x10/0x10\n[ 906.045456] ret_from_fork+0x1f/0x40"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2021-46983",
    "datePublished": "2024-02-28T08:13:12.223Z",
    "dateReserved": "2024-02-27T18:42:55.946Z",
    "dateUpdated": "2024-12-19T07:33:01.180Z",
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46983\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:37.410\",\"lastModified\":\"2024-12-06T16:02:03.857\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvmet-rdma: Fix NULL deref when SEND is completed with error\\n\\nWhen running some traffic and taking down the link on peer, a\\nretry counter exceeded error is received. This leads to\\nnvmet_rdma_error_comp which tried accessing the cq_context to\\nobtain the queue. The cq_context is no longer valid after the\\nfix to use shared CQ mechanism and should be obtained similar\\nto how it is obtained in other functions from the wc-\u003eqp.\\n\\n[ 905.786331] nvmet_rdma: SEND for CQE 0x00000000e3337f90 failed with status transport retry counter exceeded (12).\\n[ 905.832048] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048\\n[ 905.839919] PGD 0 P4D 0\\n[ 905.842464] Oops: 0000 1 SMP NOPTI\\n[ 905.846144] CPU: 13 PID: 1557 Comm: kworker/13:1H Kdump: loaded Tainted: G OE --------- - - 4.18.0-304.el8.x86_64 #1\\n[ 905.872135] RIP: 0010:nvmet_rdma_error_comp+0x5/0x1b [nvmet_rdma]\\n[ 905.878259] Code: 19 4f c0 e8 89 b3 a5 f6 e9 5b e0 ff ff 0f b7 75 14 4c 89 ea 48 c7 c7 08 1a 4f c0 e8 71 b3 a5 f6 e9 4b e0 ff ff 0f 1f 44 00 00 \u003c48\u003e 8b 47 48 48 85 c0 74 08 48 89 c7 e9 98 bf 49 00 e9 c3 e3 ff ff\\n[ 905.897135] RSP: 0018:ffffab601c45fe28 EFLAGS: 00010246\\n[ 905.902387] RAX: 0000000000000065 RBX: ffff9e729ea2f800 RCX: 0000000000000000\\n[ 905.909558] RDX: 0000000000000000 RSI: ffff9e72df9567c8 RDI: 0000000000000000\\n[ 905.916731] RBP: ffff9e729ea2b400 R08: 000000000000074d R09: 0000000000000074\\n[ 905.923903] R10: 0000000000000000 R11: ffffab601c45fcc0 R12: 0000000000000010\\n[ 905.931074] R13: 0000000000000000 R14: 0000000000000010 R15: ffff9e729ea2f400\\n[ 905.938247] FS: 0000000000000000(0000) GS:ffff9e72df940000(0000) knlGS:0000000000000000\\n[ 905.938249] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[ 905.950067] nvmet_rdma: SEND for CQE 0x00000000c7356cca failed with status transport retry counter exceeded (12).\\n[ 905.961855] CR2: 0000000000000048 CR3: 000000678d010004 CR4: 00000000007706e0\\n[ 905.961855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\n[ 905.961856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\n[ 905.961857] PKRU: 55555554\\n[ 906.010315] Call Trace:\\n[ 906.012778] __ib_process_cq+0x89/0x170 [ib_core]\\n[ 906.017509] ib_cq_poll_work+0x26/0x80 [ib_core]\\n[ 906.022152] process_one_work+0x1a7/0x360\\n[ 906.026182] ? create_worker+0x1a0/0x1a0\\n[ 906.030123] worker_thread+0x30/0x390\\n[ 906.033802] ? create_worker+0x1a0/0x1a0\\n[ 906.037744] kthread+0x116/0x130\\n[ 906.040988] ? kthread_flush_work_fn+0x10/0x10\\n[ 906.045456] ret_from_fork+0x1f/0x40\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nvmet-rdma: corrige la deref NULL cuando se completa SEND con error Al ejecutar algo de tr\u00e1fico y eliminar el enlace en el par, se recibe un error de contador de reintentos excedido. Esto lleva a nvmet_rdma_error_comp que intent\u00f3 acceder a cq_context para obtener la cola. El cq_context ya no es v\u00e1lido despu\u00e9s de la correcci\u00f3n para usar el mecanismo CQ compartido y debe obtenerse de manera similar a c\u00f3mo se obtiene en otras funciones de wc-\u0026gt;qp. [905.786331] nvmet_rdma: El ENV\u00cdO para CQE 0x00000000e3337f90 fall\u00f3 y se super\u00f3 el contador de reintentos de transporte de estado (12). [905.832048] ERROR: no se puede manejar la desreferencia del puntero NULL del kernel en 0000000000000048 [905.839919] PGD 0 P4D 0 [905.842464] Vaya: 0000 1 SMP NOPTI [905.846144] CPU: 13 PID: 1557 Co mm: kworker/13:1H Kdump: cargado Contaminado : G OE --------- - - 4.18.0-304.el8.x86_64 #1 [ 905.872135] RIP: 0010:nvmet_rdma_error_comp+0x5/0x1b [nvmet_rdma] [ 905.878259] C\u00f3digo: 19 4f c0 e8 89 B3 A5 F6 E9 5B E0 FF FF 0F B7 75 14 4C 89 EA 48 C7 C7 08 1A 4F C0 E8 71 B3 A5 F6 E9 4B E0 FF FF 0F 1F 44 00 00 00 \u0026lt;48\u0026gt; 8B 47 48 48 85 C0 74 08 48 89 c7 e9 98 bf 49 00 e9 c3 e3 ff ff [ 905.897135] RSP: 0018:ffffab601c45fe28 EFLAGS: 00010246 [ 905.902387] RAX: 00000000000000065 RBX: ffff9e729ea2f800 RCX: 0000000000000000 [ 905.909558] RDX: 0000000000000000 RSI: ffff9e72df9567c8 RDI: 00000000000000000 [ 905.916731] RBP : ffff9e729ea2b400 R08: 000000000000074d R09: 0000000000000074 [ 905.923903] R10: 00000000000000000 R11: ffffab601c45fcc0 R12: 00000000000 00010 [ 905.931074] R13: 0000000000000000 R14: 0000000000000010 R15: ffff9e729ea2f400 [ 905.938247] FS: 0000000000000000(0000) GS:ffff9e72 df940000(0000) knlGS:0000000000000000 [ 905.938249] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 905.950067] nvmet_rdma: ENV\u00cdO para CQE 0x00000000c7356cca fall\u00f3 con el contador de reintentos de transporte de estado excedido (12). [ 905.961855] CR2: 0000000000000048 CR3: 000000678d010004 CR4: 00000000007706e0 [ 905.961855] DR0: 00000000000000000 DR1: 00000000000000 00 DR2: 0000000000000000 [ 905.961856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000000400 [ 905.961857] PKRU: 55555554 [ 906.0 10315] Seguimiento de llamadas: [906.012778 ] __ib_process_cq+0x89/0x170 [ib_core] [ 906.017509] ib_cq_poll_work+0x26/0x80 [ib_core] [ 906.022152] Process_one_work+0x1a7/0x360 [ 906.026182] ? crear_trabajador+0x1a0/0x1a0 [ 906.030123] hilo_trabajador+0x30/0x390 [ 906.033802] ? create_worker+0x1a0/0x1a0 [ 906.037744] kthread+0x116/0x130 [ 906.040988] ? kthread_flush_work_fn+0x10/0x10 [ 906.045456] ret_from_fork+0x1f/0x40\"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.9\",\"versionEndExcluding\":\"5.10.38\",\"matchCriteriaId\":\"B7EA3F8B-B23D-4BE1-96D5-42EE22A3BBF7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.11.22\",\"matchCriteriaId\":\"83B53E9A-F426-4C03-9A5F-A931FF79827E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.12.5\",\"matchCriteriaId\":\"0274929A-B36C-4F4C-AB22-30A0DD6B995B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/17fb6dfa5162b89ecfa07df891a53afec321abe8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5bdb34466ad8370546dfa0497594fb1d6f2fed90\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/64f3410c7bfc389b1a58611d0799f4a36ce4b6b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8cc365f9559b86802afc0208389f5c8d46b4ad61\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/17fb6dfa5162b89ecfa07df891a53afec321abe8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5bdb34466ad8370546dfa0497594fb1d6f2fed90\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/64f3410c7bfc389b1a58611d0799f4a36ce4b6b5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8cc365f9559b86802afc0208389f5c8d46b4ad61\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


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