{"api_version":"1","generated_at":"2026-06-28T05:03:02+00:00","cve":"CVE-2026-52914","urls":{"html":"https://cve.report/CVE-2026-52914","api":"https://cve.report/api/cve/CVE-2026-52914.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52914","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52914"},"summary":{"title":"batman-adv: fix fragment reassembly length accounting","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix fragment reassembly length accounting\n\nbatman-adv keeps a running payload length for queued fragments and uses it\nto validate a fragment chain before reassembly.\n\nThat accounting currently allows the accumulated fragment length to be\ntruncated during updates. As a result, malformed fragment chains can\nbypass the intended validation and drive reassembly with inconsistent\nlength state, leading to a local denial of service.\n\nFix the accounting by storing the accumulated length in a length-typed\nfield and rejecting update overflows before the existing validation logic\nruns.\n\nThe fix was verified against the original reproducer and against valid\nfragment reassembly paths.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 08:16:21","updated_at":"2026-06-24 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52914","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 610bfc6bc99bc83680d190ebc69359a05fc7f605 e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 610bfc6bc99bc83680d190ebc69359a05fc7f605 37be61825b15534a16ff9cfc9546de155b6df982 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 610bfc6bc99bc83680d190ebc69359a05fc7f605 975563c5de1123dde1ec7946bf5556d20c89d74e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 610bfc6bc99bc83680d190ebc69359a05fc7f605 f653b040dad1af70fa5cd4fe085e4758925480c9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix fragment reassembly length accounting\n\nbatman-adv keeps a running payload length for queued fragments and uses it\nto validate a fragment chain before reassembly.\n\nThat accounting currently allows the accumulated fragment length to be\ntruncated during updates. As a result, malformed fragment chains can\nbypass the intended validation and drive reassembly with inconsistent\nlength state, leading to a local denial of service.\n\nFix the accounting by storing the accumulated length in a length-typed\nfield and rejecting update overflows before the existing validation logic\nruns.\n\nThe fix was verified against the original reproducer and against valid\nfragment reassembly paths."}],"providerMetadata":{"dateUpdated":"2026-06-24T07:14:11.906Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64"},{"url":"https://git.kernel.org/stable/c/37be61825b15534a16ff9cfc9546de155b6df982"},{"url":"https://git.kernel.org/stable/c/975563c5de1123dde1ec7946bf5556d20c89d74e"},{"url":"https://git.kernel.org/stable/c/f653b040dad1af70fa5cd4fe085e4758925480c9"},{"url":"https://git.kernel.org/stable/c/e910dbf509125fe51ad68e4fa74dc8ab0a8e787a"},{"url":"https://git.kernel.org/stable/c/3eb8bcb823391bd58997831b3c9c152a4ba8e255"},{"url":"https://git.kernel.org/stable/c/fdb2c96efb2baeb3725e9ce3ede8f1e36f5490f0"},{"url":"https://git.kernel.org/stable/c/9cd3f16c320bfdadd4509358122368deb56a5741"}],"title":"batman-adv: fix fragment reassembly length accounting","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52914","datePublished":"2026-06-24T07:14:11.906Z","dateReserved":"2026-06-09T07:44:35.367Z","dateUpdated":"2026-06-24T07:14:11.906Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 08:16:21","lastModifiedDate":"2026-06-24 08:16:21","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52914","Ordinal":"1","Title":"batman-adv: fix fragment reassembly length accounting","CVE":"CVE-2026-52914","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52914","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: fix fragment reassembly length accounting\n\nbatman-adv keeps a running payload length for queued fragments and uses it\nto validate a fragment chain before reassembly.\n\nThat accounting currently allows the accumulated fragment length to be\ntruncated during updates. As a result, malformed fragment chains can\nbypass the intended validation and drive reassembly with inconsistent\nlength state, leading to a local denial of service.\n\nFix the accounting by storing the accumulated length in a length-typed\nfield and rejecting update overflows before the existing validation logic\nruns.\n\nThe fix was verified against the original reproducer and against valid\nfragment reassembly paths.","Type":"Description","Title":"batman-adv: fix fragment reassembly length accounting"}]}}}