5.5

CVE-2022-48671: cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all()

Modified
AliasesUBUNTU-CVE-2022-48671DEBIAN-CVE-2022-48671
Published 03-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2022-48671 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% 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 (CVE.org)
EPSS score
0.18%
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 6 · Related 6
SUSE-SU-2024:1644-1SUSE-SU-2024:1659-1SUSE-SU-2024:1663-1SUSE-SU-2024:2011-1SUSE-SU-2024:2189-1SUSE-SU-2025:0231-1

Timeline

  1. 03-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() syzbot is hitting percpu_rwsem_assert_held(&cpu_hotplug_lock) warning at cpuset_attach() [1], for commit 4f7e7236435ca0ab ("cgroup: Fix threadgroup_rwsem <-> cpus_read_lock() deadlock") missed that cpuset_attach() is also called from cgroup_attach_task_all(). Add cpus_read_lock() like what cgroup_procs_write_start() does.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.18% 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.

Ubuntu62 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ e446300968c6bd25d9cd6c33b9600780a39b3975, < 321488cfac7d0eb6d97de467015ff754f85813ff | ≥ 59c6902a96b4439e07c25ef86a4593bea5481c3b, < 07191f984842d50020789ff14c75da436a7f46a9 | ≥ dee1e2b18cf5426eed985512ccc6636ec69dbdd6, < 9f267393b036f1470fb12fb892d59e7ff8aeb58d | ≥ 3bf4bf54069f9b62a54988e5d085023c17a66c90, < 5db17805b6ba4c34dab303f49aea3562fc25af75 | ≥ c0deb027c99c099aa6b831e326bfba802b25e774, < 99bc25748e394d17f9e8b10cc7f273b8e64c1c7e | ≥ 4f7e7236435ca0abe005c674ebd6892c6e83aeb3, < 43626dade36fa74d3329046f4ae2d7fdefe401c6 | ≥ 5.4.213, < 5.4.215 | ≥ 5.10.143, < 5.10.145 | ≥ 5.15.68, < 5.15.70 | ≥ 5.19.9, < 5.19.11
  • linux_kernel≥ 5.4.213, < 5.4.215 | ≥ 5.10.143, < 5.10.145 | > 5.15.68, < 5.15.70 | ≥ 5.19.9, < 5.19.11
Debian1 product
  • linux< 5.19.11-1

3 vendors · 65 products

References

10 links