github - ghsa-hrvw-g8xf-vhvj

GHSA-HRVW-G8XF-VHVJ

Vulnerability from github – Published: 2025-12-22 18:30 – Updated: 2025-12-22 18:30

Details

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

locking/spinlock/debug: Fix data-race in do_raw_write_lock

KCSAN reports:

BUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock

write (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1: do_raw_write_lock+0x120/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork

read to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0: do_raw_write_lock+0x88/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork

value changed: 0xffffffff -> 0x00000001

Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111

Commit 1a365e822372 ("locking/spinlock/debug: Fix various data races") has adressed most of these races, but seems to be not consistent/not complete.

From do_raw_write_lock() only debug_write_lock_after() part has been converted to WRITE_ONCE(), but not debug_write_lock_before() part. Do it now.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68336"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-22T17:16:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlocking/spinlock/debug: Fix data-race in do_raw_write_lock\n\nKCSAN reports:\n\nBUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock\n\nwrite (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1:\n do_raw_write_lock+0x120/0x204\n _raw_write_lock_irq\n do_exit\n call_usermodehelper_exec_async\n ret_from_fork\n\nread to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0:\n do_raw_write_lock+0x88/0x204\n _raw_write_lock_irq\n do_exit\n call_usermodehelper_exec_async\n ret_from_fork\n\nvalue changed: 0xffffffff -\u003e 0x00000001\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111\n\nCommit 1a365e822372 (\"locking/spinlock/debug: Fix various data races\") has\nadressed most of these races, but seems to be not consistent/not complete.\n\n\u003eFrom do_raw_write_lock() only debug_write_lock_after() part has been\nconverted to WRITE_ONCE(), but not debug_write_lock_before() part.\nDo it now.",
  "id": "GHSA-hrvw-g8xf-vhvj",
  "modified": "2025-12-22T18:30:25Z",
  "published": "2025-12-22T18:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68336"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16b3590c0e1e615757dade098c8fbc0d4f040c76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/396a9270a7b90886be501611b13aa636f2e8c703"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b163a5e8c703201c905d6ec7920ed79d167e8442"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c14ecb555c3ee80eeb030a4e46d00e679537f03a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68336 (GCVE-0-2025-68336)

Vulnerability from cvelistv5 – Published: 2025-12-22 16:14 – Updated: 2025-12-22 16:14

Title

locking/spinlock/debug: Fix data-race in do_raw_write_lock

Summary

In the Linux kernel, the following vulnerability has been resolved: locking/spinlock/debug: Fix data-race in do_raw_write_lock KCSAN reports: BUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock write (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1: do_raw_write_lock+0x120/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork read to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0: do_raw_write_lock+0x88/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork value changed: 0xffffffff -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111 Commit 1a365e822372 ("locking/spinlock/debug: Fix various data races") has adressed most of these races, but seems to be not consistent/not complete. >From do_raw_write_lock() only debug_write_lock_after() part has been converted to WRITE_ONCE(), but not debug_write_lock_before() part. Do it now.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/b163a5e8c703201c9…
	https://git.kernel.org/stable/c/16b3590c0e1e61575…
	https://git.kernel.org/stable/c/396a9270a7b90886b…
	https://git.kernel.org/stable/c/c14ecb555c3ee80ee…

Impacted products

Vendor

Product

Version

Linux

Affected: 1a365e822372ba24c9da0822bc583894f6f3d821 , < b163a5e8c703201c905d6ec7920ed79d167e8442 (git)
Affected: 1a365e822372ba24c9da0822bc583894f6f3d821 , < 16b3590c0e1e615757dade098c8fbc0d4f040c76 (git)
Affected: 1a365e822372ba24c9da0822bc583894f6f3d821 , < 396a9270a7b90886be501611b13aa636f2e8c703 (git)
Affected: 1a365e822372ba24c9da0822bc583894f6f3d821 , < c14ecb555c3ee80eeb030a4e46d00e679537f03a (git)
Affected: 3106fb78d3579c8e9c9b3040f7f7841981919624 (git)
Affected: c0911024ff927ba5c4786b507004cb615be1d776 (git)
Affected: 09226e5c38639437565af01e6009a9286a351d04 (git)
Affected: c7673f01604fa722b9d7c1e29e17cec1b8ae09c5 (git)
Affected: c120c3dbeb76305235c8e557f84d9e2d7d0f5933 (git)

Linux

Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 6.12.62 , ≤ 6.12.* (semver)
Unaffected: 6.17.12 , ≤ 6.17.* (semver)
Unaffected: 6.18.1 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

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{
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              "versionType": "semver"
            },
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlocking/spinlock/debug: Fix data-race in do_raw_write_lock\n\nKCSAN reports:\n\nBUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock\n\nwrite (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1:\n do_raw_write_lock+0x120/0x204\n _raw_write_lock_irq\n do_exit\n call_usermodehelper_exec_async\n ret_from_fork\n\nread to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0:\n do_raw_write_lock+0x88/0x204\n _raw_write_lock_irq\n do_exit\n call_usermodehelper_exec_async\n ret_from_fork\n\nvalue changed: 0xffffffff -\u003e 0x00000001\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111\n\nCommit 1a365e822372 (\"locking/spinlock/debug: Fix various data races\") has\nadressed most of these races, but seems to be not consistent/not complete.\n\n\u003eFrom do_raw_write_lock() only debug_write_lock_after() part has been\nconverted to WRITE_ONCE(), but not debug_write_lock_before() part.\nDo it now."
        }
      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68336",
    "datePublished": "2025-12-22T16:14:13.425Z",
    "dateReserved": "2025-12-16T14:48:05.297Z",
    "dateUpdated": "2025-12-22T16:14:13.425Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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-HRVW-G8XF-VHVJ

CVE-2025-68336 (GCVE-0-2025-68336)

Tags

Sightings

Nomenclature