Answer in brief
CVE-2026-74399 records a Unknown severity vulnerability in evm: terminate and bound the evm_xattrs read buffer. 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-2026-74399 records a Unknown severity vulnerability in evm: terminate and bound the evm_xattrs read buffer. 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.
A CVSS score is not reported in the current record. 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 | >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <8df81954d22a653a8b01d46692cd56f71137269b || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <0b9f8282b40af4a99d6243d2cb939d14ff36b049 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <a36cbfb85f26e6c6fb6529b1a364331b94dc88f3 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <12ad52dc45a0c8c9d25e85b4a84201de4c5420ed || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <38b7d63b23aa9d2ddde7688040e9426d32be4065 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <11143a19f5b8dc8f414deab87571134f9f447313 | 8df81954d22a653a8b01d46692cd56f71137269b, 0b9f8282b40af4a99d6243d2cb939d14ff36b049, a36cbfb85f26e6c6fb6529b1a364331b94dc88f3, 12ad52dc45a0c8c9d25e85b4a84201de4c5420ed, a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d, 38b7d63b23aa9d2ddde7688040e9426d32be4065, 11143a19f5b8dc8f414deab87571134f9f447313 |
| Linux/Linuxgeneric | 4.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: evm: terminate and bound the evm_xattrs read buffer evm_read_xattrs() allocates size + 1 bytes, fills them from the list of enabled xattrs, and then passes strlen(temp) to simple_read_from_buffer(). When no configured xattrs are enabled, the fill loop stores nothing and temp[0] remains uninitialized, so strlen() reads beyond initialized memory. Explicitly terminate the buffer after allocation, use snprintf() for each formatted line, and pass the accumulated length, without risk of truncation, to simple_read_from_buffer().
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. 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 | >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <8df81954d22a653a8b01d46692cd56f71137269b || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <0b9f8282b40af4a99d6243d2cb939d14ff36b049 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <a36cbfb85f26e6c6fb6529b1a364331b94dc88f3 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <12ad52dc45a0c8c9d25e85b4a84201de4c5420ed || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <38b7d63b23aa9d2ddde7688040e9426d32be4065 || >=fa516b66a1bfce1d72f1620c54bdfebc493000d1 <11143a19f5b8dc8f414deab87571134f9f447313 | 8df81954d22a653a8b01d46692cd56f71137269b, 0b9f8282b40af4a99d6243d2cb939d14ff36b049, a36cbfb85f26e6c6fb6529b1a364331b94dc88f3, 12ad52dc45a0c8c9d25e85b4a84201de4c5420ed, a0f64cf8bfcb39e533d9e27aeb763a8d81b7f39d, 38b7d63b23aa9d2ddde7688040e9426d32be4065, 11143a19f5b8dc8f414deab87571134f9f447313 |
| Linux/Linuxgeneric | 4.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: evm: terminate and bound the evm_xattrs read buffer evm_read_xattrs() allocates size + 1 bytes, fills them from the list of enabled xattrs, and then passes strlen(temp) to simple_read_from_buffer(). When no configured xattrs are enabled, the fill loop stores nothing and temp[0] remains uninitialized, so strlen() reads beyond initialized memory. Explicitly terminate the buffer after allocation, use snprintf() for each formatted line, and pass the accumulated length, without risk of truncation, to simple_read_from_buffer().
Quoted source text, attributed separately from HOL analysis.