CVE-2023-52760: gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
First published: Tue May 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in gfs2_qd_dealloc In gfs2_put_super(), whether withdrawn or not, the quota should be cleaned up by gfs2_quota_cleanup(). Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu callback) has run for all gfs2_quota_data objects, resulting in use-after-free. Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling gfs2_make_fs_ro(), there is no need to call them again.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.6.3 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.106-3 6.1.112-1 6.11.4-1 6.11.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/08a28272faa750d4357ea2cb48d2baefd778ea81
- https://git.kernel.org/stable/c/7ad4e0a4f61c57c3ca291ee010a9d677d0199fba
- https://git.kernel.org/stable/c/bdcb8aa434c6d36b5c215d02a9ef07551be25a37
- https://launchpad.net/bugs/cve/CVE-2023-52760
- https://git.kernel.org/linus/bdcb8aa434c6d36b5c215d02a9ef07551be25a37
- https://security-tracker.debian.org/tracker/CVE-2023-52760
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52760
- https://nvd.nist.gov/vuln/detail/CVE-2023-52760
- https://ubuntu.com/security/CVE-2023-52760
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