github - ghsa-25gf-472p-pjv4

GHSA-25GF-472P-PJV4

Vulnerability from github – Published: 2024-08-30 12:31 – Updated: 2024-09-03 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

sched: Fix yet more sched_fork() races

Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash.

Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48944"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-30T11:15:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: Fix yet more sched_fork() races\n\nWhere commit 4ef0c5c6b5ba (\"kernel/sched: Fix sched_fork() access an\ninvalid sched_task_group\") fixed a fork race vs cgroup, it opened up a\nrace vs syscalls by not placing the task on the runqueue before it\ngets exposed through the pidhash.\n\nCommit 13765de8148f (\"sched/fair: Fix fault in reweight_entity\") is\ntrying to fix a single instance of this, instead fix the whole class\nof issues, effectively reverting this commit.",
  "id": "GHSA-25gf-472p-pjv4",
  "modified": "2024-09-03T15:30:40Z",
  "published": "2024-08-30T12:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48944"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3411613611a5cddf7e80908010dc87cb527dd13b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1e8206582f9d680cff7d04828708c8b6ab32957"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c65cfd89cef669d90c59f3bf150af6458137a04f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48944 (GCVE-0-2022-48944)

Vulnerability from cvelistv5 – Published: 2024-08-30 10:46 – Updated: 2025-05-04 12:44

Summary

In the Linux kernel, the following vulnerability has been resolved: sched: Fix yet more sched_fork() races Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash. Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3411613611a5cddf7…
	https://git.kernel.org/stable/c/c65cfd89cef669d90…
	https://git.kernel.org/stable/c/b1e8206582f9d680c…

Impacted products

Vendor

Product

Version

Linux

Affected: 3869eecf050416a1d19bac60926f6b5d64b0aa58 , < 3411613611a5cddf7e80908010dc87cb527dd13b (git)
Affected: 4ef0c5c6b5ba1f38f0ea1cedad0cad722f00c14a , < c65cfd89cef669d90c59f3bf150af6458137a04f (git)
Affected: 4ef0c5c6b5ba1f38f0ea1cedad0cad722f00c14a , < b1e8206582f9d680cff7d04828708c8b6ab32957 (git)
Affected: c85c6fadbef0a3eab41540ea628fa8fe8928c820 (git)
Affected: 25d40b828fb855ee62e1039c65a666c9afd60786 (git)

Linux

Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.15.27 , ≤ 5.15.* (semver)
Unaffected: 5.16.13 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-25GF-472P-PJV4

CVE-2022-48944 (GCVE-0-2022-48944)

Tags

Sightings

Nomenclature