5.5

CVE-2026-46051: linux Improper Locking

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46051DEBIAN-CVE-2026-46051
Published 27-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46051 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% 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
0.13%
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 46 · Related 46
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix soft lockup in retry_aligned_read() When retry_aligned_read() encounters an overlapped stripe, it releases the stripe via raid5_release_stripe() which puts it on the lockless released_stripes llist. In the next raid5d loop iteration, release_stripe_list() drains the stripe onto handle_list (since STRIPE_HANDLE is set by the original IO), but retry_aligned_read() runs before handle_active_stripes() and removes the stripe from handle_list via find_get_stripe() -> list_del_init(). This prevents handle_stripe() from ever processing the stripe to resolve the overlap, causing an infinite loop and soft lockup. Fix this by using __release_stripe() with temp_inactive_list instead of raid5_release_stripe() in the failure path, so the stripe does not go through the released_stripes llist. This allows raid5d to break out of its loop, and the overlap will be resolved when the stripe is eventually processed by handle_stripe().

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

+0.03 pp

From 0.10% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Ubuntu159 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 66df9f30673db66ac35145820a8e24906069ae57 | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 4166d5234fe8b6c3c7f796a6c198605356c5b355 | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < a9055300e07d9d6800264d3c2560e1d0144689ca | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 09880592f5a9dc73377d6eb5ac123537b5f8df49 | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 80fc6ca2cbde018d52e13f305edcd643911bd94b | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 1985cb3247e87ff6b8ca4bc5f9626f4f51024507 | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 883cc33b7af1c448663287f069ef9dfea001e90f | ≥ 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6, < 7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc | 3.12
  • linux_kernel≥ 3.12, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linux< 6.1.176-1 | < 6.12.86-1 | < 7.0.4-1

3 vendors · 162 products

References

47 links
Show all 47 references