5.5

CVE-2023-53648: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2023-53648DEBIAN-CVE-2023-53648
Published 07-10-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53648 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.3% 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
0.21%
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 16 · Related 15
RHSA-2024:3138SUSE-SU-2025:21040-1SUSE-SU-2025:21052-1SUSE-SU-2025:21056-1SUSE-SU-2025:21064-1SUSE-SU-2025:4057-1

Timeline

  1. 07-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer smatch error: sound/pci/ac97/ac97_codec.c:2354 snd_ac97_mixer() error: we previously assumed 'rac97' could be null (see line 2072) remove redundant assignment, return error if rac97 is NULL.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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

Ubuntu123 products
  • linuxAll versions (No fix recorded) | < 5.4.0-166.183 | < 5.15.0-86.96
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1113.123 | < 5.15.0-1047.52
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 809af7bb4219bdeef0dbb8b2ed700d6516d13fe9 | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < e4cccff1e7ab6ea30995b6fbbb007d02647e025c | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 5f13d67027fa782096e6aee0db5dce61c4aeb613 | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < f923a582217b198b557756809ffe42ac0fad6adb | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 300e26e3e64880de5013eac8831cf44387ef752c | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < d28b83252e150155b8b8c65b612c555e93c8b45f | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 09baf460dfba79ee6a0c72e68ccdbbba84d894df | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 228da1fa124470606ac19783e551f9d51a1e01b0 | ≥ da3cec35dd3c31d8706db4bf379372ce70d92118, < 79597c8bf64ca99eab385115743131d260339da5 | 2.6.28
  • linux_kernel≥ 2.6.28, < 4.14.322 | ≥ 4.15, < 4.19.291 | ≥ 4.20, < 5.4.251 | ≥ 5.5, < 5.10.188 | ≥ 5.11, < 5.15.121 | ≥ 5.16, < 6.1.39 | ≥ 6.2, < 6.3.13 | ≥ 6.4, < 6.4.4
Debian1 product
  • linux< 6.1.52-1 | < 6.4.4-1

3 vendors · 126 products

References

13 links
Show all 13 references