FKIE_CVE-2023-53848

Vulnerability from fkie_nvd - Published: 2025-12-09 16:17 - Updated: 2026-06-17 06:46
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid5-cache: fix a deadlock in r5l_exit_log() Commit b13015af94cf ("md/raid5-cache: Clear conf->log after finishing work") introduce a new problem: // caller hold reconfig_mutex r5l_exit_log flush_work(&log->disable_writeback_work) r5c_disable_writeback_async wait_event /* * conf->log is not NULL, and mddev_trylock() * will fail, wait_event() can never pass. */ conf->log = NULL Fix this problem by setting 'config->log' to NULL before wake_up() as it used to be, so that wait_event() from r5c_disable_writeback_async() can exist. In the meantime, move forward md_unregister_thread() so that null-ptr-deref this commit fixed can still be fixed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71cf23271f015a57038bdc4669952096f9fe5500
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a705b11b358dee677aad80630e7608b2d5f56691
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c406984738215dc20ac2dc63e49d70f20797730e
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid5-cache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b",
              "status": "affected",
              "version": "b13015af94cf405f73ff64ce0797269554020c37",
              "versionType": "git"
            },
            {
              "lessThan": "71cf23271f015a57038bdc4669952096f9fe5500",
              "status": "affected",
              "version": "b13015af94cf405f73ff64ce0797269554020c37",
              "versionType": "git"
            },
            {
              "lessThan": "c406984738215dc20ac2dc63e49d70f20797730e",
              "status": "affected",
              "version": "b13015af94cf405f73ff64ce0797269554020c37",
              "versionType": "git"
            },
            {
              "lessThan": "a705b11b358dee677aad80630e7608b2d5f56691",
              "status": "affected",
              "version": "b13015af94cf405f73ff64ce0797269554020c37",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid5-cache.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5-cache: fix a deadlock in r5l_exit_log()\n\nCommit b13015af94cf (\"md/raid5-cache: Clear conf-\u003elog after finishing\nwork\") introduce a new problem:\n\n// caller hold reconfig_mutex\nr5l_exit_log\n flush_work(\u0026log-\u003edisable_writeback_work)\n\t\t\tr5c_disable_writeback_async\n\t\t\t wait_event\n\t\t\t  /*\n\t\t\t   * conf-\u003elog is not NULL, and mddev_trylock()\n\t\t\t   * will fail, wait_event() can never pass.\n\t\t\t   */\n conf-\u003elog = NULL\n\nFix this problem by setting \u0027config-\u003elog\u0027 to NULL before wake_up() as it\nused to be, so that wait_event() from r5c_disable_writeback_async() can\nexist. In the meantime, move forward md_unregister_thread() so that\nnull-ptr-deref this commit fixed can still be fixed."
    }
  ],
  "id": "CVE-2023-53848",
  "lastModified": "2026-06-17T06:46:10.730",
  "metrics": {},
  "published": "2025-12-09T16:17:25.290",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/71cf23271f015a57038bdc4669952096f9fe5500"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a705b11b358dee677aad80630e7608b2d5f56691"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c406984738215dc20ac2dc63e49d70f20797730e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.