5.5

CVE-2026-43079: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-43079DEBIAN-CVE-2026-43079
Published 06-05-2026Last modified 01-06-2026
Open JSON

Vulnerability summary

CVE-2026-43079 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% 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
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 39 · Related 39
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1SUSE-SU-2026:23066-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 01-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.

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

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

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

No weakness data has been published for this record.

Affected systems

Ubuntu145 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < d18da11a5e21eac7651c8897e5e0908f6c2bc9de | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < dfcba8c8674cead6c88a2f269b71aa4efd3d384a | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < cfab2c817d2e7e0bee98d66850246ce842ed5f18 | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < 6cfc187d85f18f976d0fe527d4c6f6171542cc19 | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < f34feda8e0c9535fee3f8870ce8bab53c2798f71 | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < 7a2cb02437d92ed14fe494d8994056d5bd2c72b4 | ≥ edae1f06c2cda41edffc93de6aedc8ba8dc883c3, < 7b568e9eba2fad89a696f22f0413d44cf4a1f892 | 5.13
  • linux_kernel≥ 5.13, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.136 | ≥ 6.7, < 6.12.83 | ≥ 6.13, < 6.18.24 | ≥ 6.19, < 6.19.14 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.176-1 | < 6.12.85-1 | < 6.19.14-1

3 vendors · 148 products

References

38 links
Show all 38 references