CVE-2023-54264
Published Dec 30, 2025
Modified Apr 15, 2026
Description
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.
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References
Other References
https://git.kernel.org/stable/c/0a44ceba77c3267f8505dda102a59367dc24caee
https://git.kernel.org/stable/c/1416eebaad80bdc85ad9f97f27242011b031e2a9
https://git.kernel.org/stable/c/7f740bc696d4617f8ee44565e8ac0d36278a1e91
https://git.kernel.org/stable/c/afd9a31b5aa4b3747f382d44a7b03b7b5d0b7635
https://git.kernel.org/stable/c/baa60c66a310c50785289b0ede6fdce8ec3219c7
https://git.kernel.org/stable/c/e28f376dd8dfcc4e880ac101184132bc08703f6e
https://git.kernel.org/stable/c/e976988bc245ec3768cc0f76bed7d05488a7dd0f
https://git.kernel.org/stable/c/ea2b62f305893992156a798f665847e0663c9f41
Frequently Asked Questions
What is 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.
How do I check if I'm vulnerable to CVE-2023-54264? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.