github - ghsa-f558-fw4f-vm2c

GHSA-F558-FW4F-VM2C

Vulnerability from github – Published: 2024-06-20 12:31 – Updated: 2024-08-19 18:32

Details

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

selinux: fix double free of cond_list on error paths

On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop.

Also consistently reset the cond_list pointer to NULL after freeing.

[PM: fix line lengths in the description]

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:12Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix double free of cond_list on error paths\n\nOn error path from cond_read_list() and duplicate_policydb_cond_list()\nthe cond_list_destroy() gets called a second time in caller functions,\nresulting in NULL pointer deref.  Fix this by resetting the\ncond_list_len to 0 in cond_list_destroy(), making subsequent calls a\nnoop.\n\nAlso consistently reset the cond_list pointer to NULL after freeing.\n\n[PM: fix line lengths in the description]",
  "id": "GHSA-f558-fw4f-vm2c",
  "modified": "2024-08-19T18:32:03Z",
  "published": "2024-06-20T12:31:21Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48740"
    },
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    },
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      "type": "CVSS_V3"
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}

CVE-2022-48740 (GCVE-0-2022-48740)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2025-05-04 08:22

Summary

In the Linux kernel, the following vulnerability has been resolved: selinux: fix double free of cond_list on error paths On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop. Also consistently reset the cond_list pointer to NULL after freeing. [PM: fix line lengths in the description]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f446089a268c8fc69…
	https://git.kernel.org/stable/c/70caa32e6d81f45f0…
	https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86…
	https://git.kernel.org/stable/c/186edf7e368c40d06…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f446089a268c8fc6908488e991d28a9b936293db (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 70caa32e6d81f45f0702070c0e4dfe945e92fbd7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 186edf7e368c40d06cf727a1ad14698ea67b74ad (git)

Linux

Unaffected: 5.10.99 , ≤ 5.10.* (semver)
Unaffected: 5.15.22 , ≤ 5.15.* (semver)
Unaffected: 5.16.8 , ≤ 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-F558-FW4F-VM2C

CVE-2022-48740 (GCVE-0-2022-48740)

Tags

Sightings

Nomenclature