github - ghsa-mgx5-jrhq-g7rg

ghsa-mgx5-jrhq-g7rg

Vulnerability from github

Published

2024-04-03 15:30

Modified

2024-04-03 15:30

Details

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

fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats

lock_task_sighand() can trigger a hard lockup. If NR_CPUS threads call do_task_stat() at the same time and the process has NR_THREADS, it will spin with irqs disabled O(NR_CPUS * NR_THREADS) time.

Change do_task_stat() to use sig->stats_lock to gather the statistics outside of ->siglock protected section, in the likely case this code will run lockless.

Show details on source website

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  "affected": [],
  "aliases": [
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  "database_specific": {
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T15:15:52Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/proc: do_task_stat: use sig-\u003estats_lock to gather the threads/children stats\n\nlock_task_sighand() can trigger a hard lockup.  If NR_CPUS threads call\ndo_task_stat() at the same time and the process has NR_THREADS, it will\nspin with irqs disabled O(NR_CPUS * NR_THREADS) time.\n\nChange do_task_stat() to use sig-\u003estats_lock to gather the statistics\noutside of -\u003esiglock protected section, in the likely case this code will\nrun lockless.",
  "id": "GHSA-mgx5-jrhq-g7rg",
  "modified": "2024-04-03T15:30:42Z",
  "published": "2024-04-03T15:30:42Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26686"
    },
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  "schema_version": "1.4.0",
  "severity": []
}

cve-2024-26686

Vulnerability from cvelistv5

Published

2024-04-03 14:54

Modified

2024-11-05 09:13

Severity ?

Summary

fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats

References

▼	URL	Tags
	https://git.kernel.org/stable/c/cf4b8c39b9a0bd81c47afc7ef62914a62dd5ec4d
	https://git.kernel.org/stable/c/27978243f165b44e342f28f449b91327944ea071
	https://git.kernel.org/stable/c/7601df8031fd67310af891897ef6cc0df4209305

Impacted products

▼	Vendor	Product
	Linux	Linux
	Linux	Linux

Show details on NVD website

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