Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ext4: always panic when errors=panic is specified Before commit 014c9caa29d3 ("ext4: make ext4_abort() use __ext4_error()"), the following series of commands would trigger a panic: 1. mount /dev/sda -o ro,errors=panic test 2. mount /dev/sda -o remount,abort test After commit 014c9caa29d3, remounting a file system using the test mount option "abort" will no longer trigger a panic. This commit will restore the behaviour immediately before commit 014c9caa29d3. (However, note that the Linux kernel's behavior has not been consistent; some previous kernel versions, including 5.4 and 4.19 similarly did not panic after using the mount option "abort".) This also makes a change to long-standing behaviour; namely, the following series commands will now cause a panic, when previously it did not: 1. mount /dev/sda -o ro,errors=panic test 2. echo test > /sys/fs/ext4/sda/trigger_fs_error However, this makes ext4's behaviour much more consistent, so this is a good thing.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 014c9caa29d3a44e0de695c99ef18bec3e887d52 before 64e1eebe2131183174f4fbb6b1491355f96c6cde; affected 014c9caa29d3a44e0de695c99ef18bec3e887d52 before 1e9ea8f4637026b8e965128953f2da061ccae9c4; affected 014c9caa29d3a44e0de695c99ef18bec3e887d52 before ac2f7ca51b0929461ea49918f27c11b680f28995 |
| Linux / Linux | affected 5.11; unaffected 0 before 5.11; unaffected 5.11.20 through 5.11.*; unaffected 5.12.3 through 5.12.*; unaffected 5.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/64e1eebe2131183174f4fbb6b1491355f96c6cde
- https://git.kernel.org/stable/c/1e9ea8f4637026b8e965128953f2da061ccae9c4
- https://git.kernel.org/stable/c/ac2f7ca51b0929461ea49918f27c11b680f28995
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.