CVE-2023-52791

Medium

In the Linux kernel, the following vulnerability has been resolved: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption (e.g. in wait_for_completion() while waiting for the DMA). panic() calls preempt_disable_notrace() before calling emergency_restart(). Therefore, if an i2c device is used for the restart, the xfer should be atomic. This avoids warnings like: [ 12.667612] WARNING: CPU: 1 PID: 1 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x33c/0x6b0 [ 12.676926] Voluntary context switch within RCU read-side critical section! ... [ 12.742376] schedule_timeout from wait_for_completion_timeout+0x90/0x114 [ 12.749179] wait_for_completion_timeout from tegra_i2c_wait_completion+0x40/0x70 ... [ 12.994527] atomic_notifier_call_chain from machine_restart+0x34/0x58 [ 13.001050] machine_restart from panic+0x2a8/0x32c Use !preemptible() instead, which is basically the same check as pre-v5.2.

Package Linux Kernel
Published 2024-05-21
Last modified 2025-09-26
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

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

Affected versions

Linux kernel versions 5.2 and later are affected. Fixed in 5.4.262, 5.10.202, 5.15.140, 6.1.64, 6.5.13, 6.6.3, 6.7 and their respective stable series.

Affected from
≥ 5.2
Fixed in
✓ 5.4.262 5.4.x ✓ 5.10.202 5.10.x ✓ 5.15.140 5.15.x ✓ 6.1.64 6.1.x ✓ 6.5.13 6.5.x ✓ 6.6.3 6.6.x ✓ 6.7

References

7 total
Showing 5 of 7 references View all on NVD

Frequently asked questions

  • What is CVE-2023-52791?

    CVE-2023-52791 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.2 onward and has been patched in 5.4.262, 5.10.202, 5.15.140 and others. CVE-2023-52791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52791?

    CVE-2023-52791 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-52791?

    Yes. CVE-2023-52791 has been patched. Fixed versions include 5.4.262, 5.10.202, 5.15.140 and others. If you are running Linux kernel 5.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-52791 actively exploited?

    No. CVE-2023-52791 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Back to
All CVEs
View on
NVD / NIST