CVE-2024-38556

High

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Add a timeout to acquire the command queue semaphore Prevent forced completion handling on an entry that has not yet been assigned an index, causing an out of bounds access on idx = -22. Instead of waiting indefinitely for the sem, blocking flow now waits for index to be allocated or a sem acquisition timeout before beginning the timer for FW completion. Kernel log example: mlx5_core 0000:06:00.0: wait_func_handle_exec_timeout:1128:(pid 185911): cmd[-22]: CREATE_UCTX(0xa04) No done completion

Package Linux Kernel
Published 2024-06-19
Last modified 2025-03-06
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-129

CVE-2024-38556 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.4.174, 5.10.94, 5.15.17, 5.16.3, 5.17 and later are affected. Fixed in 6.1.93, 6.6.33, 6.8.12, 6.9.3, 6.10 and their respective stable series.

Affected from
≥ 5.4.174 ≥ 5.10.94 ≥ 5.15.17 ≥ 5.16.3 ≥ 5.17
Fixed in
✓ 6.1.93 6.1.x ✓ 6.6.33 6.6.x ✓ 6.8.12 6.8.x ✓ 6.9.3 6.9.x ✓ 6.10

References

5 total

Frequently asked questions

  • What is CVE-2024-38556?

    CVE-2024-38556 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.4.174 onward and has been patched in 6.1.93, 6.6.33, 6.8.12 and others. CVE-2024-38556 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-38556?

    CVE-2024-38556 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2024-38556?

    Yes. CVE-2024-38556 has been patched. Fixed versions include 6.1.93, 6.6.33, 6.8.12 and others. If you are running Linux kernel 5.4.174 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-38556 actively exploited?

    No. CVE-2024-38556 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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