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CVE-2023-54139

tracing/user_events: Ensure write index cannot be negative PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: tracing/user_events: Ensure write index cannot be negative The write index indicates which event the data is for and accesses a per-file array. The index is passed by user processes during write() calls as the first 4 bytes. Ensure that it cannot be negative by returning -EINVAL to prevent out of bounds accesses. Update ftrace self-test to ensure this occurs properly.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 7f5a08c79df35e68f1a43033450c5050f12bc155 before 0489c2b2c3104b89f078dbcec8c744dfc157d3e9; affected 7f5a08c79df35e68f1a43033450c5050f12bc155 before 4fe46b5adf18e3dc606e62c9e6a0413398a17572; affected 7f5a08c79df35e68f1a43033450c5050f12bc155 before fa7f2f5d1739452280c22727c4384a52b72ab5de; affected 7f5a08c79df35e68f1a43033450c5050f12bc155 before cd98c93286a30cc4588dfd02453bec63c2f4acf4
Linux / Linuxaffected 5.18; unaffected 0 before 5.18; unaffected 6.1.28 through 6.1.*; unaffected 6.2.15 through 6.2.*; unaffected 6.3.2 through 6.3.*; unaffected 6.4 through *

CWE

No CWE identifiers supplied.

References