CVE-2022-49834

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free bug of ns_writer on remount If a nilfs2 filesystem is downgraded to read-only due to metadata corruption on disk and is remounted read/write, or if emergency read-only remount is performed, detaching a log writer and synchronizing the filesystem can be done at the same time. In these cases, use-after-free of the log writer (hereinafter nilfs->ns_writer) can happen as shown in the scenario below: Task1 Task2 -------------------------------- ------------------------------ nilfs_construct_segment nil...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < b2fbf10040216ef5ee270773755fc2f5da65b749, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < 39a3ed68270b079c6b874d4e4727a512b9b4882c, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < b4736ab5542112fe0a40f140a0a0b072954f34da, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < 9b162e81045266a2d5b44df9dffdf05c54de9cca, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < 4feedde5486c07ea79787839153a71ca71329c7d, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < afbd1188382a75f6cfe22c0b68533f7f9664f182, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < b152300d5a1ba4258dacf9916bff20e6a8c7603b, >= fe5f171bb272946ce5fbf843ce2f8467d0d41b9a < 8cccf05fe857a18ee26e20d11a8455a73ffd4efd, >= 2.6.34, < 4.9.334, >= 4.10 < 4.14.300, >= 4.15 < 4.19.267, >= 4.20 < 5.4.225, >= 5.5 < 5.10.155, >= 5.11 < 5.15.79, >= 5.16 < 6.0.9, 6.1

Fixed versions

4.9.334, 4.14.300, 4.19.267, 5.4.225, 5.10.155, 5.15.79, 6.0.9

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416