CVE-2023-54264
In the Linux kernel, the following vulnerability has been resolved: fs/sysv: Null check to prevent null-ptr-deref bug sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on that leads to the null-ptr-deref bug.
Affected versions
Linux kernel versions
2.6.19
and later are affected. Fixed in
4.14.322,
4.19.291,
5.4.253,
5.10.190,
5.15.126,
6.1.45,
6.4.10,
6.5
and their respective stable series.
References
The following references provide additional information about CVE-2023-54264 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/0a44ceba77c3267f8505dda102a59367dc24caee
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PatchKernel patch commithttps://git.kernel.org/stable/c/1416eebaad80bdc85ad9f97f27242011b031e2a9
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PatchKernel patch commithttps://git.kernel.org/stable/c/7f740bc696d4617f8ee44565e8ac0d36278a1e91
Frequently asked questions
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What is CVE-2023-54264?
CVE-2023-54264 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.19 onward and has been patched in 4.14.322, 4.19.291, 5.4.253 and others. CVE-2023-54264 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-2023-54264?
Yes — CVE-2023-54264 has been patched. Fixed versions include 4.14.322, 4.19.291, 5.4.253 and others. If you are running Linux kernel 2.6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54264 actively exploited?
No — CVE-2023-54264 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.