Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check for inline inode Yanming reported a kernel bug in Bugzilla kernel [1], which can be reproduced. The bug message is: The kernel message is shown below: kernel BUG at fs/inode.c:611! Call Trace: evict+0x282/0x4e0 __dentry_kill+0x2b2/0x4d0 dput+0x2dd/0x720 do_renameat2+0x596/0x970 __x64_sys_rename+0x78/0x90 do_syscall_64+0x3b/0x90 [1] https://bugzilla.kernel.org/show_bug.cgi?id=215895 The bug is due to fuzzed inode has both inline_data and encrypted flags. During f2fs_evict_inode(), as the inode was deleted by rename(), it will cause inline data conversion due to conflicting flags. The page cache will be polluted and the panic will be triggered in clear_inode(). Try fixing the bug by doing more sanity checks for inline data inode in sanity_check_inode().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fcc85a4d86b5018f08717160c89c0eb50afd1dca before efdefbe8b7564602ab446474788225a1f2a323b5; affected fcc85a4d86b5018f08717160c89c0eb50afd1dca before 7cfe2d43becaf76e562b9617d2c2d9b445f86761; affected fcc85a4d86b5018f08717160c89c0eb50afd1dca before 11c1cd032df85df3c096a57a7f27d57819956e4a; affected fcc85a4d86b5018f08717160c89c0eb50afd1dca before 198fd9faa271dd54dca6fc8eb6873f42dfd3b4d8; affected fcc85a4d86b5018f08717160c89c0eb50afd1dca before 677a82b44ebf263d4f9a0cfbd576a6ade797a07b |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 5.10.121 through 5.10.*; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/efdefbe8b7564602ab446474788225a1f2a323b5
- https://git.kernel.org/stable/c/7cfe2d43becaf76e562b9617d2c2d9b445f86761
- https://git.kernel.org/stable/c/11c1cd032df85df3c096a57a7f27d57819956e4a
- https://git.kernel.org/stable/c/198fd9faa271dd54dca6fc8eb6873f42dfd3b4d8
- https://git.kernel.org/stable/c/677a82b44ebf263d4f9a0cfbd576a6ade797a07b