CVE-2023-54139
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 versions
Linux kernel versions
5.18
and later are affected. Fixed in
6.1.28,
6.2.15,
6.3.2,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-54139 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0489c2b2c3104b89f078dbcec8c744dfc157d3e9
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PatchKernel patch commithttps://git.kernel.org/stable/c/4fe46b5adf18e3dc606e62c9e6a0413398a17572
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PatchKernel patch commithttps://git.kernel.org/stable/c/cd98c93286a30cc4588dfd02453bec63c2f4acf4
Frequently asked questions
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What is CVE-2023-54139?
CVE-2023-54139 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.18 onward and has been patched in 6.1.28, 6.2.15, 6.3.2 and others. CVE-2023-54139 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54139?
Yes — CVE-2023-54139 has been patched. Fixed versions include 6.1.28, 6.2.15, 6.3.2 and others. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54139 actively exploited?
No — CVE-2023-54139 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.