CVE-2026-74391

CVE CVE-2026-74391EUVD EUVD-2026-59538Published 2026-08-15T05:59:05.000ZLast changed 2026-08-17T05:18:30.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: tracing: Bound synthetic-field strings with seq_buf The synthetic field helpers build a prefixed synthetic variable name and a generated hist command in fixed MAX_FILTER_STR_VAL buffers. The current code appends those strings with raw strcat(), so long key lists, field names, or saved filters can run past the end of the staging buffers. Build both strings with seq_buf and propagate -E2BIG if either the synthetic variable name or the generated command exceeds MAX_FILTER_STR_VAL. This keeps the existing tracing-side limit while using the helper intended for bounded command construction. [ sdr: Moved struct seq_buf *s for upside-down x-mas tree formatting ]

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 02205a6752f223779a1b0e9e8ffacbea6e717851 <cf334620036ad2250e008c7e7bb6646a3938b7b0; patch: 6.18.40; patch: 6.12.97; 02205a6752f223779a1b0e9e8ffacbea6e717851 <baa333b2700a7fa3529d504529c8c10060fd687c; patch: 7.1.5; patch: 0; 02205a6752f223779a1b0e9e8ffacbea6e717851 <88b901fdc1662b131ff908cbd017333b61e7acc8; patch: 6.6.145; patch: 7.2; 02205a6752f223779a1b0e9e8ffacbea6e717851 <0c584c27f6649a93ec12061cc779a4bd8f7c1434; 4.17; 02205a6752f223779a1b0e9e8ffacbea6e717851 <f07883450eb14d1cf020b55d9f3a7ec5683bcd26

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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