{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52934", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.369Z", "datePublished": "2026-06-24T07:14:25.321Z", "dateUpdated": "2026-06-24T07:14:25.321Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T07:14:25.321Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tvlv: reject oversized TVLV packets\n\nbatadv_tvlv_container_ogm_append() builds a TVLV packet section from\nthe tvlv.container_list. The total size of this section is computed by\nbatadv_tvlv_container_list_size(), which sums the sizes of all registered\ncontainers.\n\nThe return type and accumulator in batadv_tvlv_container_list_size() were\nu16. If the accumulated size exceeds U16_MAX, the value wraps around,\ncausing the subsequent allocation in batadv_tvlv_container_ogm_append()\nto be undersized. The memcpy-style copy that follows would then write\nbeyond the end of the allocated buffer, corrupting kernel memory.\n\nFix this by widening the return type of batadv_tvlv_container_list_size()\nto size_t. In batadv_tvlv_container_ogm_append(), check the computed length\nagainst U16_MAX before proceeding, and bail out as if the allocation had\nfailed when the limit is exceeded."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/batman-adv/tvlv.c"], "versions": [{"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "c02aa6c0c9d1bea9bb75dea362b75ad225137bae", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "1595628a2f877d052eda18865ccf539392c47c04", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "6448a49344e87487b61bd88cb850cd694a0f576d", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "13493b00dd1e05a705981e052158652ea23eb482", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "94db72e9dac202e017ee3db22c59d17e4f3bf171", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "ede47988ac5687793745b17c1634a496a2299919", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "94a3d72cd9b21116d7c6d5bdc57c11401fc28557", "status": "affected", "versionType": "git"}, {"version": "ef26157747d42254453f6b3ac2bd8bd3c53339c3", "lessThan": "f50487e3566358b2b982b7801945e858c78ad9ab", "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/batman-adv/tvlv.c"], "versions": [{"version": "3.13", "status": "affected"}, {"version": "0", "lessThan": "3.13", "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": "6.18.34", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.11", "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": "3.13", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.18.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.0.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c02aa6c0c9d1bea9bb75dea362b75ad225137bae"}, {"url": "https://git.kernel.org/stable/c/1595628a2f877d052eda18865ccf539392c47c04"}, {"url": "https://git.kernel.org/stable/c/6448a49344e87487b61bd88cb850cd694a0f576d"}, {"url": "https://git.kernel.org/stable/c/13493b00dd1e05a705981e052158652ea23eb482"}, {"url": "https://git.kernel.org/stable/c/94db72e9dac202e017ee3db22c59d17e4f3bf171"}, {"url": "https://git.kernel.org/stable/c/ede47988ac5687793745b17c1634a496a2299919"}, {"url": "https://git.kernel.org/stable/c/94a3d72cd9b21116d7c6d5bdc57c11401fc28557"}, {"url": "https://git.kernel.org/stable/c/f50487e3566358b2b982b7801945e858c78ad9ab"}], "title": "batman-adv: tvlv: reject oversized TVLV packets", "x_generator": {"engine": "bippy-1.2.0"}}}}

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