Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.17, < 6.1.175 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025Patch
- https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194Patch
- https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4ebPatch
- https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428Patch
- https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647Patch
- https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92ePatch
FAQ
What is CVE-2026-53303?
CVE-2026-53303 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and h...
How severe is CVE-2026-53303?
CVE-2026-53303 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53303?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.