{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63926", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.021Z", "datePublished": "2026-07-19T14:55:27.154Z", "dateUpdated": "2026-07-19T14:55:27.154Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:55:27.154Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: sockmap: fix tail fragment offset in bpf_msg_push_data\n\nWhen bpf_msg_push_data() inserts data in the middle of a scatterlist\nentry, it splits the original entry into a left fragment and a right\nfragment.\n\nThe right fragment offset is page-local, but the code advances it with\n`start`, which is the message-global insertion point. For inserts into a\nnon-first SG entry, this over-advances the offset and leaves the split\nlayout inconsistent.\n\nAdvance the right fragment offset by the fragment-local delta,\n`start - offset`, which matches the length removed from the front of the\noriginal entry."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "f14609d8146707452e0822f3c8154674ce677251", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "d81b323af2dcee47573907ccb89c0df9b45cb2e2", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "aeb95146848d12206e1b2cfacd4f40e21ce81d94", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "96b72672ce849a1402730238e64d9b20bf06a96d", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "3075c21d2d76c0067f4a382765b43d6cc10470f1", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "5e19028667963fb371ebb00cecc2a473ef92056b", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "63f64a510c7917658ddf4d073ece73914ee25346", "status": "affected", "versionType": "git"}, {"version": "6fff607e2f14bd7c63c06c464a6f93b8efbabe28", "lessThan": "f72eed9b84fb771019a955908132410a9ba9ea3f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/filter.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f14609d8146707452e0822f3c8154674ce677251"}, {"url": "https://git.kernel.org/stable/c/d81b323af2dcee47573907ccb89c0df9b45cb2e2"}, {"url": "https://git.kernel.org/stable/c/aeb95146848d12206e1b2cfacd4f40e21ce81d94"}, {"url": "https://git.kernel.org/stable/c/96b72672ce849a1402730238e64d9b20bf06a96d"}, {"url": "https://git.kernel.org/stable/c/3075c21d2d76c0067f4a382765b43d6cc10470f1"}, {"url": "https://git.kernel.org/stable/c/5e19028667963fb371ebb00cecc2a473ef92056b"}, {"url": "https://git.kernel.org/stable/c/63f64a510c7917658ddf4d073ece73914ee25346"}, {"url": "https://git.kernel.org/stable/c/f72eed9b84fb771019a955908132410a9ba9ea3f"}], "title": "bpf: sockmap: fix tail fragment offset in bpf_msg_push_data", "x_generator": {"engine": "bippy-1.2.0"}}}}

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