CVE-2022-49975

{"id": "CVE-2022-49975", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-06-18T11:15:24.893", "references": [{"url": "https://git.kernel.org/stable/c/6204bf78b2a903b96ba43afff6abc0b04d6e0462", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don't redirect packets with invalid pkt_len\n\nSyzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any\nskbs, that is, the flow->head is null.\nThe root cause, as the [2] says, is because that bpf_prog_test_run_skb()\nrun a bpf prog which redirects empty skbs.\nSo we should determine whether the length of the packet modified by bpf\nprog or others like bpf_prog_test is valid before forwarding it directly."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: No redirigir paquetes con pkt_len no v\u00e1lidos. Syzbot encontr\u00f3 un problema [1]: fq_codel_drop() intenta descartar un flujo sin skbs, es decir, el flujo->head es nulo. La causa principal, como se indica en [2], es que bpf_prog_test_run_skb() ejecuta un programa bpf que redirige skbs vac\u00edos. Por lo tanto, debemos determinar si la longitud del paquete modificado por el programa bpf u otros como bpf_prog_test es v\u00e1lida antes de reenviarlo directamente."}], "lastModified": "2025-11-13T21:28:22.667", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1A50CB2A-B4FD-4716-9BCE-0E9E3F59FF9D", "versionEndExcluding": "5.4.212"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6872143E-BF6D-4DB5-8454-D843F608AB3B", "versionEndExcluding": "5.10.141", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81162A58-341F-455C-96D5-6DF30A0F9295", "versionEndExcluding": "5.15.65", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEBCC9D9-2058-44E1-8A2E-ABC880E4DE50", "versionEndExcluding": "5.19.7", "versionStartIncluding": "5.16"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}