{"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":"2026-06-28T06:36:55.538Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:36:55.538Z"},"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."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"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"}}}}