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Vulnerability CVE-2023-52760
Published: 2024-05-21
| Description: |
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In gfs2_put_super(), whether withdrawn or not, the quota should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. |
References: |
https://git.kernel.org/stable/c/08a28272faa750d4357ea2cb48d2baefd778ea81
https://git.kernel.org/stable/c/bdcb8aa434c6d36b5c215d02a9ef07551be25a37
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