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VulnerabilityPublished Updated

CVE-2024-56589: Linux kernel · scsi: hisi_sas: Add cond_resched() for no forced preemption model

Source GCVE Database

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 30 Oct 2026, 00:49 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Dec 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

A fix is available that adds a cond_resched() call in the hisi_sas driver to prevent CPU soft lockup. Users should apply the official Linux kernel updates that include this patch. No other mitigation is indicated.

Description

CVE-2024-56589 is a medium severity vulnerability in the Linux kernel's hisi_sas SCSI driver. It occurs in no forced preemption model kernels when an expander is connected to multiple high-performance SAS SSDs, causing a CPU soft lockup due to continuous CPU consumption and watchdog timeout. The issue arises because both the hardware interrupt handler and interrupt thread run on the same CPU, preventing the watchdog thread from running. The fix involves adding a cond_resched() call to allow the watchdog thread to execute properly.

References

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