CVE-2024-56621 (GCVE-0-2024-56621)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:51 – Updated: 2025-05-04 10:00
VLAI?
Title
scsi: ufs: core: Cancel RTC work during ufshcd_remove()
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Cancel RTC work during ufshcd_remove() Currently, RTC work is only cancelled during __ufshcd_wl_suspend(). When ufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to this, any further trigger of the RTC work after ufshcd_remove() would result in a NULL pointer dereference as below: Unable to handle kernel NULL pointer dereference at virtual address 00000000000002a4 Workqueue: events ufshcd_rtc_work Call trace: _raw_spin_lock_irqsave+0x34/0x8c pm_runtime_get_if_active+0x24/0xb4 ufshcd_rtc_work+0x124/0x19c process_scheduled_works+0x18c/0x2d8 worker_thread+0x144/0x280 kthread+0x11c/0x128 ret_from_fork+0x10/0x20 Since RTC work accesses the ufshcd internal structures, it should be cancelled when ufshcd is removed. So do that in ufshcd_remove(), as per the order in ufshcd_init().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 06701a545e9a3c4e007cff6872a074bf97c40619 , < 57479e37d3f69efee2f0678568274db773284bc8 (git)
Affected: 6bf999e0eb41850d5c857102535d5c53b2ede224 , < 2e7a3bb0331efb292e0fb022c36bc592137f0520 (git)
Affected: 6bf999e0eb41850d5c857102535d5c53b2ede224 , < 1695c4361d35b7bdadd7b34f99c9c07741e181e5 (git)
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    Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ufs/core/ufshcd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "57479e37d3f69efee2f0678568274db773284bc8",
              "status": "affected",
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              "versionType": "git"
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              "lessThan": "2e7a3bb0331efb292e0fb022c36bc592137f0520",
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              "versionType": "git"
            },
            {
              "lessThan": "1695c4361d35b7bdadd7b34f99c9c07741e181e5",
              "status": "affected",
              "version": "6bf999e0eb41850d5c857102535d5c53b2ede224",
              "versionType": "git"
            }
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Cancel RTC work during ufshcd_remove()\n\nCurrently, RTC work is only cancelled during __ufshcd_wl_suspend(). When\nufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to\nthis, any further trigger of the RTC work after ufshcd_remove() would\nresult in a NULL pointer dereference as below:\n\nUnable to handle kernel NULL pointer dereference at virtual address 00000000000002a4\nWorkqueue: events ufshcd_rtc_work\nCall trace:\n _raw_spin_lock_irqsave+0x34/0x8c\n pm_runtime_get_if_active+0x24/0xb4\n ufshcd_rtc_work+0x124/0x19c\n process_scheduled_works+0x18c/0x2d8\n worker_thread+0x144/0x280\n kthread+0x11c/0x128\n ret_from_fork+0x10/0x20\n\nSince RTC work accesses the ufshcd internal structures, it should be cancelled\nwhen ufshcd is removed. So do that in ufshcd_remove(), as per the order in\nufshcd_init()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:00:08.838Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/57479e37d3f69efee2f0678568274db773284bc8"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e7a3bb0331efb292e0fb022c36bc592137f0520"
        },
        {
          "url": "https://git.kernel.org/stable/c/1695c4361d35b7bdadd7b34f99c9c07741e181e5"
        }
      ],
      "title": "scsi: ufs: core: Cancel RTC work during ufshcd_remove()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56621",
    "datePublished": "2024-12-27T14:51:24.948Z",
    "dateReserved": "2024-12-27T14:03:06.016Z",
    "dateUpdated": "2025-05-04T10:00:08.838Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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