CVE-2026-53076

{"id": "CVE-2026-53076", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53076", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:25:17.354262Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "d138ea2fe01c254413d5a6104eb236e0d5c7dd9a", "versionType": "git"}, {"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "e19c5ed9f1922a6854073f8651a63fa7be26e9e9", "versionType": "git"}, {"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "e0378419b0e20178b5d100b27c9cc7e51064202e", "versionType": "git"}, {"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "6086079e6d1c32ba4c4b422612b8aebb1129a96c", "versionType": "git"}, {"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "634a793d0e1c822412095d25a1338f8831ad894c", "versionType": "git"}, {"status": "affected", "version": "d3bec0138bfbe58606fc1d6f57a4cdc1a20218db", "lessThan": "576afddfee8d1108ee299bf10f581593540d1a36", "versionType": "git"}, {"status": "affected", "version": "c602ad2b52dcbca5af08e5137bd5575c039b52e3", "versionType": "git"}, {"status": "affected", "version": "ab68b940dd6f7b5f8e2557937162dcb8a0583a05", "versionType": "git"}, {"status": "affected", "version": "5.4.78", "lessThan": "5.5", "versionType": "semver"}, {"status": "affected", "version": "5.9.9", "lessThan": "5.10", "versionType": "semver"}], "programFiles": ["kernel/bpf/hashtab.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/hashtab.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T17:17:21.623", "references": [{"url": "https://git.kernel.org/stable/c/576afddfee8d1108ee299bf10f581593540d1a36", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6086079e6d1c32ba4c4b422612b8aebb1129a96c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/634a793d0e1c822412095d25a1338f8831ad894c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d138ea2fe01c254413d5a6104eb236e0d5c7dd9a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e0378419b0e20178b5d100b27c9cc7e51064202e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e19c5ed9f1922a6854073f8651a63fa7be26e9e9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix OOB in pcpu_init_value\n\nAn out-of-bounds read occurs when copying element from a\nBPF_MAP_TYPE_CGROUP_STORAGE map to another pcpu map with the\nsame value_size that is not rounded up to 8 bytes.\n\nThe issue happens when:\n1. A CGROUP_STORAGE map is created with value_size not aligned to\n 8 bytes (e.g., 4 bytes)\n2. A pcpu map is created with the same value_size (e.g., 4 bytes)\n3. Update element in 2 with data in 1\n\npcpu_init_value assumes that all sources are rounded up to 8 bytes,\nand invokes copy_map_value_long to make a data copy, However, the\nassumption doesn't stand since there are some cases where the source\nmay not be rounded up to 8 bytes, e.g., CGROUP_STORAGE, skb->data.\nthe verifier verifies exactly the size that the source claims, not\nthe size rounded up to 8 bytes by kernel, an OOB happens when the\nsource has only 4 bytes while the copy size(4) is rounded up to 8."}], "lastModified": "2026-10-30T13:19:09.740", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97B82710-BEDD-4221-B849-682CCB5CDFD9", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.78"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9598C575-CE16-4F2B-A517-667AA54B4B86", "versionEndExcluding": "5.10", "versionStartIncluding": "5.9.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "281D841A-B4F4-48FC-8C9B-632707D1423A", "versionEndExcluding": "6.6.141", "versionStartIncluding": "5.10.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B29EBB93-107F-4ED6-8DE3-C2732BC659C3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0CD159FA-170F-4389-9085-CACCF97ABB1E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F0390D83-6C17-4557-BE8D-B659E04F565A"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4120E4B3-B66D-4ACE-8570-1DD4DF20A324"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73D60343-647D-4B5D-AA6D-CE87C462E368"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}