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

Vulnerability from cvelistv5 – Published: 2024-12-27 14:51 – Updated: 2026-05-11 20:56
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 06701a545e9a3c4e007cff6872a074bf97c40619 , < 57479e37d3f69efee2f0678568274db773284bc8 (git)
Affected: 6bf999e0eb41850d5c857102535d5c53b2ede224 , < 2e7a3bb0331efb292e0fb022c36bc592137f0520 (git)
Affected: 6bf999e0eb41850d5c857102535d5c53b2ede224 , < 1695c4361d35b7bdadd7b34f99c9c07741e181e5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "current_release_date": "2026-08-29T01:38:09Z",
      "cve": "CVE-2024-56621",
      "id": "CVE-2024-56621",
      "initial_release_date": "2025-01-08T00:20:49Z",
      "product_status:known_not_affected": "546",
      "product_status:recommended": "78",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56621",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56621.json",
      "version": "23"
    }
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}



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