CVE-2024-26602 sched/membarrier: reduce the ability to hammer on sys_membarrier

2024-02-2414:56:56

Linux

github.com

linux kernel vulnerability

sys_membarrier

sched/membarrier

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:

sched/membarrier: reduce the ability to hammer on sys_membarrier

On some systems, sys_membarrier can be very expensive, causing overall
slowdowns for everything. So put a lock on the path in order to
serialize the accesses to prevent the ability for this to be called at
too high of a frequency and saturate the machine.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/sched/membarrier.c"
    ],
    "versions": [
      {
        "version": "22e4ebb97582",
        "lessThan": "3cd139875e9a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "2441a64070b8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "db896bbe4a9c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "50fb4e17df31",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "24ec7504a08a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "b6a2a9cbb675",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "c5b2063c65d0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22e4ebb97582",
        "lessThan": "944d5fe50f3f",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/sched/membarrier.c"
    ],
    "versions": [
      {
        "version": "4.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.14",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.307",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.269",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.210",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.149",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.79",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.18",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.6",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]