5.5

CVE-2026-64166: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-64166DEBIAN-CVE-2026-64166
Published 19-07-2026Last modified 19-07-2026
Open JSON

Vulnerability summary

CVE-2026-64166 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.6% 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
0.12%
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 43 · Related 43
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1SUSE-SU-2026:23528-1SUSE-SU-2026:23529-1SUSE-SU-2026:23881-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Check for NULL FF-A ID table while driver registration The bus match callback assumes that every FF-A driver provides an id_table and dereferences it unconditionally. Enforce that contract at registration time so a buggy client driver cannot crash the bus during match.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

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

Ubuntu155 products
  • linux< 5.15.0-186.196 | < 6.8.0-139.139 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1064.67 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < f98f131256beaddd51ad468e95d90d857fef12bf | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < bc499d1acddbb75b5b4bce05f5296dd8ef9611fd | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < adfff93d08a2e12ecf2a1eba272d18bc749f13c0 | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < 34f59211984f66788390e7469f3e99d3796db4a8 | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < 820245d86ce58898fb48b4fefc77d0cafc02801d | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < 198f6c86d508ed562f07dc00276cac6dbb5dd3bf | ≥ 92743071464fca5acbbe812d9a0d88de3eaaad36, < 0a5e695095c557d2380131b613dea4e8d90371be | 5.14
  • linux_kernelEOL≥ 5.14.1, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.142 | ≥ 6.7, < 6.12.92 | ≥ 6.13, < 6.18.34 | ≥ 6.19, < 7.0.11 | 5.14 | 5.14:rc2 | 5.14:rc3 | 5.14:rc4 | 5.14:rc5 | 5.14:rc6 | 5.14:rc7 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 158 products

References

43 links
Show all 43 references