CVE-2026-53303
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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | b6a06cbbb5f7fd03589cff9178314af04c568826 < d3ff0c121bbaef026df6248ab7ef6f0b068b0647, b6a06cbbb5f7fd03589cff9178314af04c568826 < cea15f66b7b68b2c50943a6660e0692c6635e4eb, b6a06cbbb5f7fd03589cff9178314af04c568826 < 4b3a1bf4c2ffd4c9595d900ead78c9035894a025, b6a06cbbb5f7fd03589cff9178314af04c568826 < d0e877810baf613b018fd9747440b9d4d9db1428 … |
| Linux | Linux | — | 4.17, 0 < 4.17, 6.1.175 ≤ 6.1.*, 6.6.141 ≤ 6.6.* … |
References (6)
- https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647
- https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4eb
- https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025
- https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428
- https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e
- https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194