github - ghsa-7x3v-348q-cc5h

GHSA-7X3V-348Q-CC5H

Vulnerability from github – Published: 2024-10-29 03:31 – Updated: 2024-10-30 18:30

Details

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

blk-mq: setup queue ->tag_set before initializing hctx

Commit 7b815817aa58 ("blk-mq: add helper for checking if one CPU is mapped to specified hctx") needs to check queue mapping via tag set in hctx's cpuhp handler.

However, q->tag_set may not be setup yet when the cpuhp handler is enabled, then kernel oops is triggered.

Fix the issue by setup queue tag_set before initializing hctx.

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-2024-50081"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-29T01:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: setup queue -\u003etag_set before initializing hctx\n\nCommit 7b815817aa58 (\"blk-mq: add helper for checking if one CPU is mapped to specified hctx\")\nneeds to check queue mapping via tag set in hctx\u0027s cpuhp handler.\n\nHowever, q-\u003etag_set may not be setup yet when the cpuhp handler is\nenabled, then kernel oops is triggered.\n\nFix the issue by setup queue tag_set before initializing hctx.",
  "id": "GHSA-7x3v-348q-cc5h",
  "modified": "2024-10-30T18:30:48Z",
  "published": "2024-10-29T03:31:06Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50081"
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      "url": "https://git.kernel.org/stable/c/c25c0c9035bb8b28c844dfddeda7b8bdbcfcae95"
    },
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      "type": "WEB",
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  "severity": [
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      "type": "CVSS_V3"
    }
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}

CVE-2024-50081 (GCVE-0-2024-50081)

Vulnerability from cvelistv5 – Published: 2024-10-29 00:50 – Updated: 2025-10-01 20:27

Summary

In the Linux kernel, the following vulnerability has been resolved: blk-mq: setup queue ->tag_set before initializing hctx Commit 7b815817aa58 ("blk-mq: add helper for checking if one CPU is mapped to specified hctx") needs to check queue mapping via tag set in hctx's cpuhp handler. However, q->tag_set may not be setup yet when the cpuhp handler is enabled, then kernel oops is triggered. Fix the issue by setup queue tag_set before initializing hctx.

Severity ?

5.5 (Medium)


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

CWE

CWE-noinfo Not enough information

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d28b256db525d9432…
	https://git.kernel.org/stable/c/c25c0c9035bb8b28c…

Impacted products

Vendor

Product

Version

Linux

Affected: 7b815817aa58d2e2101feb2fcf64c60cae0b2695 , < d28b256db525d9432bc3eb2c8d83f7d3f5e1cc87 (git)
Affected: 7b815817aa58d2e2101feb2fcf64c60cae0b2695 , < c25c0c9035bb8b28c844dfddeda7b8bdbcfcae95 (git)

Linux

Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.11.5 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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              "confidentialityImpact": "NONE",
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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-7X3V-348Q-CC5H

CVE-2024-50081 (GCVE-0-2024-50081)

Tags

Sightings

Nomenclature