linux: In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible UAF when remounting r/o a mmp...
CVE-2021-47342 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47342, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible UAF when remounting r/o a mmp-protected file system After commit 618f003199c6 ("ext4: fix memory leak in ext4_fill_super"), after the file system is remounted read-only, there is a race where the kmmpd thread can exit, causing sbi->s_mmp_tsk to point at freed memory, which the call to ext4_stop_mmpd() can trip over. Fix this by only allowing kmmpd() to exit when it is stopped via ext4_stop_mmpd(). Bug-Report-Link: <20210629143603.2166962-1-yebin10@huawei.com>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.14.6-1 | DEBIAN-CVE-2021-47342 | May 21, 2024 |
| linux · Debian 13.5 (trixie) | 5.14.6-1 | DEBIAN-CVE-2021-47342 | May 21, 2024 |
| linux · Debian 14 | 5.14.6-1 | DEBIAN-CVE-2021-47342 | May 21, 2024 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.