CVE-2026-45948
Published May 27, 2026
Modified May 27, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4_ext_shift_extents() In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4_find_extent(), leading to a memory leak. Fix this by jumping to the out label to ensure the path is properly released.
References
Other References
https://git.kernel.org/stable/c/12615ab4bfb69678e5d961b28bb70040299e51b1
https://git.kernel.org/stable/c/1bce219ee5512cf179ba40cf114945a14a16e21f
https://git.kernel.org/stable/c/2f4b1052246ca646bb17bfe0f53df2fdf9729b58
https://git.kernel.org/stable/c/4a79fde8db7eba7f1128d971ceba4e3c9ac84aec
https://git.kernel.org/stable/c/7e807cb8603b7664fa630a696cd891d9a03c248d
https://git.kernel.org/stable/c/afc5e61e1a07b2b833bd72cbee36ecce9cd901e2
https://git.kernel.org/stable/c/bd7b52557e4a3ccd7595fdb3a585f1257de57935
https://git.kernel.org/stable/c/ca81109d4a8f192dc1cbad4a1ee25246363c2833
Frequently Asked Questions
What is CVE-2026-45948? +
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix memory leak in ext4_ext_shift_extents()
In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the
function returns immediately without releasing the path obtained via
ext4_find_extent(), leading to a memory leak.
Fix this by jumping to the out label to ensure the path is properly
released.
How do I check if I'm vulnerable to CVE-2026-45948? +
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.