# CVE-2023-52760: linux: In the Linux kernel, the following vulnerability has been resolved:  gfs2: Fix slab-use-after-free in gfs2_qd_dealloc...

CVE-2023-52760 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52760, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-52760
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2024

## 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vulnerability has been resolved:  gfs2: Fix slab-use-after-free in gfs2_qd_dealloc  In gfs2_put_super(), whether withdrawn or not, the quota should be cleaned up by gfs2_quota_cleanup().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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.6.8-1 | [DEBIAN-CVE-2023-52760](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52760.md) | May 21, 2024 |
| Linux | linux Debian 14 | 6.6.8-1 | [DEBIAN-CVE-2023-52760](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52760.md) | May 21, 2024 |

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