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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-74391 Detail

Description

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 ]


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0c584c27f6649a93ec12061cc779a4bd8f7c1434 kernel.org
https://git.kernel.org/stable/c/88b901fdc1662b131ff908cbd017333b61e7acc8 kernel.org
https://git.kernel.org/stable/c/baa333b2700a7fa3529d504529c8c10060fd687c kernel.org
https://git.kernel.org/stable/c/cf334620036ad2250e008c7e7bb6646a3938b7b0 kernel.org
https://git.kernel.org/stable/c/f07883450eb14d1cf020b55d9f3a7ec5683bcd26 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-74391
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org