7.8

CVE-2023-52760: gfs2: Fix slab-use-after-free in gfs2_qd_dealloc

Modified
AliasesUBUNTU-CVE-2023-52760DEBIAN-CVE-2023-52760
Published 21-05-2024Last modified 05-08-2026

Vulnerability summary

CVE-2023-52760 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 13
DLA-4008-1USN-6972-1USN-6972-2USN-6972-3USN-6972-4USN-6973-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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vulnerability has been resolved: gfs2: Fix slab-use-after-free in gfs2_qd_dealloc In gfs2_put_super(), whether withdrawn or not, the quota should be cleaned up by gfs2_quota_cleanup().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

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

Decrease -0.01 pp

From 0.27% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu116 products
  • linuxAll versions (No fix recorded) | < 4.4.0-258.292 | < 4.15.0-228.240 | < 5.4.0-193.213 | < 5.15.0-119.129
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1135.141 | < 4.4.0-1173.188 | < 4.15.0-1172.185 | < 5.4.0-1131.141 | < 5.15.0-1068.74
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f66af88e33212b57ea86da2c5d66c0d9d5c46344, < 08a28272faa750d4357ea2cb48d2baefd778ea81 | ≥ f66af88e33212b57ea86da2c5d66c0d9d5c46344, < bdcb8aa434c6d36b5c215d02a9ef07551be25a37 | 6.6
  • linux_kernel< 6.1.97 | ≥ 6.2, < 6.6.3
Debian1 product
  • linux< 6.6.8-1

3 vendors · 119 products

References

22 links
Show all 22 references