Answer in brief
CVE-2025-38568 records a High severity (CVSS 7.8) vulnerability in net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing. 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 7.8. 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 | 6.4 | Not reported |
| Linux/Linuxgeneric | >=f62af20bed2d9e824f51cfc97ff01bc261f40e58 <39491e859fd494d0b51adc5c7d54c8a7dcf1d198 || >=f62af20bed2d9e824f51cfc97ff01bc261f40e58 <d00e4125680f7074c4f42ce3c297336f23128e70 || >=f62af20bed2d9e824f51cfc97ff01bc261f40e58 <66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86 || >=f62af20bed2d9e824f51cfc97ff01bc261f40e58 <f1a9dbcb7d17bf0abb325cdc984957cfabc59693 || >=f62af20bed2d9e824f51cfc97ff01bc261f40e58 <ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 | 39491e859fd494d0b51adc5c7d54c8a7dcf1d198, d00e4125680f7074c4f42ce3c297336f23128e70, 66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86, f1a9dbcb7d17bf0abb325cdc984957cfabc59693, ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17 |
Published upstream
Aug 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.
Quoted source text, attributed separately from HOL analysis.