Answer in brief
CVE-2026-52914 records a Critical severity (CVSS 9.8) vulnerability in batman-adv: fix fragment reassembly length accounting. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-52914 records a Critical severity (CVSS 9.8) vulnerability in batman-adv: fix fragment reassembly length accounting. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <37be61825b15534a16ff9cfc9546de155b6df982 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <975563c5de1123dde1ec7946bf5556d20c89d74e || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <f653b040dad1af70fa5cd4fe085e4758925480c9 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <e910dbf509125fe51ad68e4fa74dc8ab0a8e787a || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <3eb8bcb823391bd58997831b3c9c152a4ba8e255 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <fdb2c96efb2baeb3725e9ce3ede8f1e36f5490f0 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <9cd3f16c320bfdadd4509358122368deb56a5741 | e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64, 37be61825b15534a16ff9cfc9546de155b6df982, 975563c5de1123dde1ec7946bf5556d20c89d74e, f653b040dad1af70fa5cd4fe085e4758925480c9, e910dbf509125fe51ad68e4fa74dc8ab0a8e787a, 3eb8bcb823391bd58997831b3c9c152a4ba8e255, fdb2c96efb2baeb3725e9ce3ede8f1e36f5490f0, 9cd3f16c320bfdadd4509358122368deb56a5741 |
| Linux/Linuxgeneric | 3.13 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix fragment reassembly length accounting batman-adv keeps a running payload length for queued fragments and uses it to validate a fragment chain before reassembly. That accounting currently allows the accumulated fragment length to be truncated during updates. As a result, malformed fragment chains can bypass the intended validation and drive reassembly with inconsistent length state, leading to a local denial of service. Fix the accounting by storing the accumulated length in a length-typed field and rejecting update overflows before the existing validation logic runs. The fix was verified against the original reproducer and against valid fragment reassembly paths.
Quoted source text, attributed separately from HOL analysis.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <37be61825b15534a16ff9cfc9546de155b6df982 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <975563c5de1123dde1ec7946bf5556d20c89d74e || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <f653b040dad1af70fa5cd4fe085e4758925480c9 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <e910dbf509125fe51ad68e4fa74dc8ab0a8e787a || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <3eb8bcb823391bd58997831b3c9c152a4ba8e255 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <fdb2c96efb2baeb3725e9ce3ede8f1e36f5490f0 || >=610bfc6bc99bc83680d190ebc69359a05fc7f605 <9cd3f16c320bfdadd4509358122368deb56a5741 | e4f3f6b818aa6a678bc54a2d4e0bece2303c6a64, 37be61825b15534a16ff9cfc9546de155b6df982, 975563c5de1123dde1ec7946bf5556d20c89d74e, f653b040dad1af70fa5cd4fe085e4758925480c9, e910dbf509125fe51ad68e4fa74dc8ab0a8e787a, 3eb8bcb823391bd58997831b3c9c152a4ba8e255, fdb2c96efb2baeb3725e9ce3ede8f1e36f5490f0, 9cd3f16c320bfdadd4509358122368deb56a5741 |
| Linux/Linuxgeneric | 3.13 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix fragment reassembly length accounting batman-adv keeps a running payload length for queued fragments and uses it to validate a fragment chain before reassembly. That accounting currently allows the accumulated fragment length to be truncated during updates. As a result, malformed fragment chains can bypass the intended validation and drive reassembly with inconsistent length state, leading to a local denial of service. Fix the accounting by storing the accumulated length in a length-typed field and rejecting update overflows before the existing validation logic runs. The fix was verified against the original reproducer and against valid fragment reassembly paths.
Quoted source text, attributed separately from HOL analysis.