Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b6a06cbbb5f7fd03589cff9178314af04c568826 before d3ff0c121bbaef026df6248ab7ef6f0b068b0647; affected b6a06cbbb5f7fd03589cff9178314af04c568826 before cea15f66b7b68b2c50943a6660e0692c6635e4eb; affected b6a06cbbb5f7fd03589cff9178314af04c568826 before 4b3a1bf4c2ffd4c9595d900ead78c9035894a025; affected b6a06cbbb5f7fd03589cff9178314af04c568826 before d0e877810baf613b018fd9747440b9d4d9db1428; affected b6a06cbbb5f7fd03589cff9178314af04c568826 before ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e; affected b6a06cbbb5f7fd03589cff9178314af04c568826 before 5909bedbed38c558bee7cb6758ceedf9bc3a9194 |
| Linux / Linux | affected 4.17; unaffected 0 before 4.17; unaffected 6.1.175 through 6.1.*; unaffected 6.6.141 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- 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