5.5

CVE-2023-52646: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-52646DEBIAN-CVE-2023-52646
Published 26-04-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-52646 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 13.9% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 11
SUSE-SU-2024:1643-1SUSE-SU-2024:1644-1SUSE-SU-2024:1646-1SUSE-SU-2024:1870-1SUSE-SU-2024:1983-1SUSE-SU-2024:2008-1

Timeline

  1. 26-04-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [jmoyer@redhat.com: fix 80 column issue]

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu103 products
  • linux< 4.4.0-283.317 | < 4.15.0-211.222 | < 5.4.0-149.166 | < 5.15.0-72.79
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1156.162 | < 4.4.0-1194.209 | < 4.15.0-1156.169 | < 5.4.0-1102.110 | < 5.15.0-1036.40
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < 808f1e4b5723ae4eda724d2ad6f6638905eefd95 | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < d8dca1bfe9adcae38b35add64977818c0c13dd22 | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < 4326d0080f7e84fba775da41d158f46cf9d3f1c2 | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < c261f798f7baa8080cf0214081d43d5f86bb073f | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < 178993157e8c50aef7f35d7d6d3b44bb428199e1 | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < af126acf01a12bdb04986fd26fc2eb3b40249e0d | ≥ e4a0d3e720e7e508749c1439b5ba3aff56c92976, < 81e9d6f8647650a7bead74c5f926e29970e834d1 | 3.19
  • linux_kernel≥ 3.19, < 4.14.306 | ≥ 4.15, < 4.19.273 | ≥ 4.20, < 5.4.232 | ≥ 5.5, < 5.10.169 | ≥ 5.11, < 5.15.95 | ≥ 5.16, < 6.1.13 | 6.2:rc1 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4 | 6.2:rc5 | 6.2:rc6 | 6.2:rc7 | 6.2:rc8
Debian1 product
  • linux< 6.1.15-1

3 vendors · 106 products

References

13 links
Show all 13 references