CVE-2022-49973

{"id": "CVE-2022-49973", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-06-18T11:15:24.673", "references": [{"url": "https://git.kernel.org/stable/c/10ee118a1756141f8e9c87aa7344ed12b41630a8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/583585e48d965338e73e1eb383768d16e0922d73", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/de22cba333d8699ad77e79f862fe1320cb1284de", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nskmsg: Fix wrong last sg check in sk_msg_recvmsg()\n\nFix one kernel NULL pointer dereference as below:\n\n[ 224.462334] Call Trace:\n[ 224.462394] __tcp_bpf_recvmsg+0xd3/0x380\n[ 224.462441] ? sock_has_perm+0x78/0xa0\n[ 224.462463] tcp_bpf_recvmsg+0x12e/0x220\n[ 224.462494] inet_recvmsg+0x5b/0xd0\n[ 224.462534] __sys_recvfrom+0xc8/0x130\n[ 224.462574] ? syscall_trace_enter+0x1df/0x2e0\n[ 224.462606] ? __do_page_fault+0x2de/0x500\n[ 224.462635] __x64_sys_recvfrom+0x24/0x30\n[ 224.462660] do_syscall_64+0x5d/0x1d0\n[ 224.462709] entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nIn commit 9974d37ea75f (\"skmsg: Fix invalid last sg check in\nsk_msg_recvmsg()\"), we change last sg check to sg_is_last(),\nbut in sockmap redirection case (without stream_parser/stream_verdict/\nskb_verdict), we did not mark the end of the scatterlist. Check the\nsk_msg_alloc, sk_msg_page_add, and bpf_msg_push_data functions, they all\ndo not mark the end of sg. They are expected to use sg.end for end\njudgment. So the judgment of '(i != msg_rx->sg.end)' is added back here."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: skmsg: Corrige la \u00faltima comprobaci\u00f3n sg incorrecta en sk_msg_recvmsg() Corrige una desreferencia de puntero NULL del kernel como se muestra a continuaci\u00f3n: [224.462334] Seguimiento de llamadas: [224.462394] __tcp_bpf_recvmsg+0xd3/0x380 [224.462441] ? syscall_trace_enter+0x1df/0x2e0 [ 224.462606] ? __do_page_fault+0x2de/0x500 [ 224.462635] __x64_sys_recvfrom+0x24/0x30 [ 224.462660] do_syscall_64+0x5d/0x1d0 [ 224.462709] entry_SYSCALL_64_after_hwframe+0x65/0xca En el commit 9974d37ea75f (\"skmsg: Corregir la \u00faltima comprobaci\u00f3n de sg no v\u00e1lida en sk_msg_recvmsg()\"), cambiamos la \u00faltima comprobaci\u00f3n de sg a sg_is_last(), pero en el caso de redirecci\u00f3n de sockmap (sin stream_parser/stream_verdict/skb_verdict), no marcamos el final de la lista de dispersi\u00f3n. Verifique las funciones sk_msg_alloc, sk_msg_page_add y bpf_msg_push_data; ninguna marca el final de sg. Se espera que usen sg.end para la determinaci\u00f3n del final. Por lo tanto, se a\u00f1ade aqu\u00ed la determinaci\u00f3n de '(i != msg_rx->sg.end)'."}], "lastModified": "2025-11-13T21:26:45.497", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7A949C3C-CF0E-4534-AACE-D99FED95FCAE", "versionEndExcluding": "5.15.66", "versionStartIncluding": "5.15.61"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B60CAFE2-08C3-461B-B5F8-25BEB0C9853E", "versionEndExcluding": "5.19", "versionStartIncluding": "5.18.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00F39B21-9F82-4FE5-A788-FD1349833FBC", "versionEndExcluding": "5.19.8", "versionStartIncluding": "5.19.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8BD11A3-8643-49B6-BADE-5029A0117325"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F0AD220-F6A9-4012-8636-155F1B841FAD"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A46498B3-78E1-4623-AAE1-94D29A42BE4E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}