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

2024-05-0314:50:23

Linux

github.com

linux kernel

vulnerability

resolved

cgroup

cpus_read_lock

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

5.1%

JSON

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.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/cgroup/cgroup-v1.c"
    ],
    "versions": [
      {
        "version": "e446300968c6",
        "lessThan": "321488cfac7d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "59c6902a96b4",
        "lessThan": "07191f984842",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dee1e2b18cf5",
        "lessThan": "9f267393b036",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3bf4bf54069f",
        "lessThan": "5db17805b6ba",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c0deb027c99c",
        "lessThan": "99bc25748e39",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4f7e7236435c",
        "lessThan": "43626dade36f",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/cgroup/cgroup-v1.c"
    ],
    "versions": [
      {
        "version": "5.4.213",
        "lessThan": "5.4.215",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.10.143",
        "lessThan": "5.10.145",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.15.68",
        "lessThan": "5.15.70",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.19.9",
        "lessThan": "5.19.11",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]