Answer in brief
CVE-2026-52934 records a High severity (CVSS 8.8) vulnerability in batman-adv: tvlv: reject oversized TVLV packets. 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-2026-52934 records a High severity (CVSS 8.8) vulnerability in batman-adv: tvlv: reject oversized TVLV packets. 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 8.8. 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 | >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <c02aa6c0c9d1bea9bb75dea362b75ad225137bae || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <1595628a2f877d052eda18865ccf539392c47c04 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <6448a49344e87487b61bd88cb850cd694a0f576d || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <13493b00dd1e05a705981e052158652ea23eb482 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <94db72e9dac202e017ee3db22c59d17e4f3bf171 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <ede47988ac5687793745b17c1634a496a2299919 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <94a3d72cd9b21116d7c6d5bdc57c11401fc28557 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <f50487e3566358b2b982b7801945e858c78ad9ab | c02aa6c0c9d1bea9bb75dea362b75ad225137bae, 1595628a2f877d052eda18865ccf539392c47c04, 6448a49344e87487b61bd88cb850cd694a0f576d, 13493b00dd1e05a705981e052158652ea23eb482, 94db72e9dac202e017ee3db22c59d17e4f3bf171, ede47988ac5687793745b17c1634a496a2299919, 94a3d72cd9b21116d7c6d5bdc57c11401fc28557, f50487e3566358b2b982b7801945e858c78ad9ab |
| 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: tvlv: reject oversized TVLV packets batadv_tvlv_container_ogm_append() builds a TVLV packet section from the tvlv.container_list. The total size of this section is computed by batadv_tvlv_container_list_size(), which sums the sizes of all registered containers. The return type and accumulator in batadv_tvlv_container_list_size() were u16. If the accumulated size exceeds U16_MAX, the value wraps around, causing the subsequent allocation in batadv_tvlv_container_ogm_append() to be undersized. The memcpy-style copy that follows would then write beyond the end of the allocated buffer, corrupting kernel memory. Fix this by widening the return type of batadv_tvlv_container_list_size() to size_t. In batadv_tvlv_container_ogm_append(), check the computed length against U16_MAX before proceeding, and bail out as if the allocation had failed when the limit is exceeded.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.8. 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 | >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <c02aa6c0c9d1bea9bb75dea362b75ad225137bae || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <1595628a2f877d052eda18865ccf539392c47c04 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <6448a49344e87487b61bd88cb850cd694a0f576d || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <13493b00dd1e05a705981e052158652ea23eb482 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <94db72e9dac202e017ee3db22c59d17e4f3bf171 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <ede47988ac5687793745b17c1634a496a2299919 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <94a3d72cd9b21116d7c6d5bdc57c11401fc28557 || >=ef26157747d42254453f6b3ac2bd8bd3c53339c3 <f50487e3566358b2b982b7801945e858c78ad9ab | c02aa6c0c9d1bea9bb75dea362b75ad225137bae, 1595628a2f877d052eda18865ccf539392c47c04, 6448a49344e87487b61bd88cb850cd694a0f576d, 13493b00dd1e05a705981e052158652ea23eb482, 94db72e9dac202e017ee3db22c59d17e4f3bf171, ede47988ac5687793745b17c1634a496a2299919, 94a3d72cd9b21116d7c6d5bdc57c11401fc28557, f50487e3566358b2b982b7801945e858c78ad9ab |
| 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: tvlv: reject oversized TVLV packets batadv_tvlv_container_ogm_append() builds a TVLV packet section from the tvlv.container_list. The total size of this section is computed by batadv_tvlv_container_list_size(), which sums the sizes of all registered containers. The return type and accumulator in batadv_tvlv_container_list_size() were u16. If the accumulated size exceeds U16_MAX, the value wraps around, causing the subsequent allocation in batadv_tvlv_container_ogm_append() to be undersized. The memcpy-style copy that follows would then write beyond the end of the allocated buffer, corrupting kernel memory. Fix this by widening the return type of batadv_tvlv_container_list_size() to size_t. In batadv_tvlv_container_ogm_append(), check the computed length against U16_MAX before proceeding, and bail out as if the allocation had failed when the limit is exceeded.
Quoted source text, attributed separately from HOL analysis.