Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before 5ed0496e383cb6de120e56991385dce70bbb87c1; affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before 0619f7750f2b178a1309808832ab20d85e0ad121; affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before 181e63cd595c688194e07332f9944b3a63193de2; affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before c6e67df64783e99a657ef2b8c834ba2bf54c539c; affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before 81f819c537d29932e4b9267f02411cbc8b355178; affected 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 before 907c3fe532253a6ef4eb9c4d67efb71fab58c706 |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 5.10.224 through 5.10.*; unaffected 5.15.165 through 5.15.*; unaffected 6.1.103 through 6.1.*; unaffected 6.6.44 through 6.6.*; unaffected 6.10.3 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1
- https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121
- https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2
- https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c
- https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178
- https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
No English description supplied.