CVE-2023-52494

High

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.

Package Linux Kernel
Published 2024-03-11
Last modified 2026-07-24
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-787

CVE-2023-52494 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.10.36, 5.11.20, 5.12.3, 5.13 and later are affected. Fixed in 5.10.261, 5.15.149, 6.1.76, 6.6.15, 6.7.3, 6.8 and their respective stable series.

Affected from
≥ 5.10.36 ≥ 5.11.20 ≥ 5.12.3 ≥ 5.13
Fixed in
✓ 5.10.261 5.10.x ✓ 5.15.149 5.15.x ✓ 6.1.76 6.1.x ✓ 6.6.15 6.6.x ✓ 6.7.3 6.7.x ✓ 6.8

References

6 total
Showing 5 of 6 references View all on NVD

Frequently asked questions

  • What is CVE-2023-52494?

    CVE-2023-52494 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 5.10.36 onward and has been patched in 5.10.261, 5.15.149, 6.1.76 and others. CVE-2023-52494 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52494?

    CVE-2023-52494 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-2023-52494?

    Yes. CVE-2023-52494 has been patched. Fixed versions include 5.10.261, 5.15.149, 6.1.76 and others. If you are running Linux kernel 5.10.36 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52494 actively exploited?

    No. CVE-2023-52494 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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