5.5

CVE-2023-53483: ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup()

Analyzed
AliasesUBUNTU-CVE-2023-53483DEBIAN-CVE-2023-53483
Published 01-10-2025Last modified 11-05-2026

Vulnerability summary

CVE-2023-53483 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 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 2
RHSA-2024:3138RHSA-2024:9315

Timeline

  1. 01-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() devm_kzalloc() may fail, clk_data->name might be NULL and will cause a NULL pointer dereference later. [ rjw: Subject and changelog edits ]

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% 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.

Ubuntu124 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 7fdb98e8a768b3ccc05494d3ea4436047f512b9d, < 79ca94bc3e8cc3befa883c7d30b30a27ef0ea386 | ≥ 7fdb98e8a768b3ccc05494d3ea4436047f512b9d, < 8a632ff6a2bea49993002b4c46092a2aea625840 | ≥ 7fdb98e8a768b3ccc05494d3ea4436047f512b9d, < 4dea41775d951ff1f7b472a346a8ca3ae7e74455 | 5.17
  • linux_kernel≥ 5.17, < 6.1.30 | ≥ 6.2, < 6.3.4
Debian1 product
  • linux< 6.1.37-1 | < 6.3.7-1

3 vendors · 127 products

References

7 links