{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64000", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.026Z", "datePublished": "2026-07-19T14:56:18.116Z", "dateUpdated": "2026-07-20T13:42:12.905Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-20T13:42:12.905Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: fix potential OOB access in supervision frame handling\n\nEnsure the entire TLV header is linearized before access by adding\nsizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this,\na truncated frame could cause an out-of-bounds access."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/hsr/hsr_forward.c"], "versions": [{"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "09a37dca090c55ffb1a33f52d8667f1c2367ef48", "status": "affected", "versionType": "git"}, {"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "a4b64f3e9c7b8259f7dd251a0313420ba7c01852", "status": "affected", "versionType": "git"}, {"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "71c986c0ba45b7dc574fae27c83e7b6671556f37", "status": "affected", "versionType": "git"}, {"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7", "status": "affected", "versionType": "git"}, {"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "78607a6854a22a2502f68092202e75a39af4865d", "status": "affected", "versionType": "git"}, {"version": "eafaa88b3eb7f28aecb222281655473431d3ef2e", "lessThan": "f229426072fc865654a60978bb7fda790a051ff3", "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/hsr/hsr_forward.c"], "versions": [{"version": "5.16", "status": "affected"}, {"version": "0", "lessThan": "5.16", "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": "5.16", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48"}, {"url": "https://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852"}, {"url": "https://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37"}, {"url": "https://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7"}, {"url": "https://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d"}, {"url": "https://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3"}], "title": "net: hsr: fix potential OOB access in supervision frame handling", "x_generator": {"engine": "bippy-1.2.0"}}}}

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