7.8

CVE-2026-45862: linux Race Condition

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-45862DEBIAN-CVE-2026-45862
Published 27-05-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-45862 is a high (CVSS 7.8) Race Condition vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · -0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 35 · Related 35
OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1SUSE-SU-2026:22460-1SUSE-SU-2026:22742-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before it, to avoid the time window when this PASID table may be already used by non-coherent IOMMU hardware while its contents in RAM is still some random old data, not zero-initialized.

CVSS metrics

4 scores · 4 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

-0.03 pp

From 0.15% on 21-09-2026

21-09-202621-10-2026
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

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 7e00b52c8cdd9d3a985d63d72ecae7bde6314883, < cd75e77125c8a51754ca4cd60b4ca083ed735d1d | ≥ 5c65f097124770c3e5b9b83ed1a8b68c119bc7b5, < 0616137b70e6d9a547d4b60df8e1b64e36d83661 | ≥ 2bed9455db7cc0ab7ece6b3d846472097b52855a, < 36990407cdd257473607e33802d00e978af2759e | ≥ 194b3348bdbb7db65375c72f3f774aee4cc6614e, < c93f23375d8c410954b0df825e814b632fd62b9d | ≥ 194b3348bdbb7db65375c72f3f774aee4cc6614e, < 5962c30a6f05ea1ab73f039e235bb30716243517 | ≥ 194b3348bdbb7db65375c72f3f774aee4cc6614e, < 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 | ≥ 194b3348bdbb7db65375c72f3f774aee4cc6614e, < d15cda135148ea7ba929cfdbcf208182bc29a7aa | ≥ 194b3348bdbb7db65375c72f3f774aee4cc6614e, < 22d169bdd2849fe6bd18c2643742e1c02be6451c | 1b48c70feefc499b62670521efa002ab01e05df5 | bc348a6cc8f92e9979fbfbb3c6b48fd51b4b1dbf | ≥ 5.10.175, < 5.10.252 | ≥ 5.15.103, < 5.15.202 | ≥ 6.1.16, < 6.1.165 | ≥ 5.4.237, < 5.5 | ≥ 6.2.3, < 6.3 | 6.3
  • linux_kernel≥ 5.4.237, < 5.5 | ≥ 5.10.175, < 5.10.252 | ≥ 5.15.103, < 5.15.202 | ≥ 6.1.16, < 6.1.165 | ≥ 6.2.3, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.14 | ≥ 6.19, < 6.19.4
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.18.14-1

3 vendors · 156 products

References

36 links
Show all 36 references