CVE-2023-52791

Advisory lineage Upstream: 0 Downstream: 16
Analyzed
Published: 21 May 2024, 15:31
Last modified:11 May 2026, 19:33

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 May 2024, 15:31
Published
Vulnerability first disclosed
11 May 2026, 19:33
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Affected Systems

  • linux•linux

    ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < 25eb381a736e7ae39a4245ef5c96484eb1073809 | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < 25284c46b657f48c0f3880a2e0706c70d81182c0 | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < f6237afabc349c1c7909db00e15d2816519e0d2b | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < 185f3617adc8fe45e40489b458f03911f0dec46c | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < 8c3fa52a46ff4d208cefb1a462ec94e0043a91e1 | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < 3473cf43b9068b9dfef2f545f833f33c6a544b91 | ≥ bae1d3a05a8b99bd748168bbf8155a1d047c562e, < aa49c90894d06e18a1ee7c095edbd2f37c232d02 | 5.2

  • linux•linux_kernel

    ≥ 5.2, < 5.4.262 | ≥ 5.5, < 5.10.202 | ≥ 5.11, < 5.15.140 | ≥ 5.16, < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3

References (7)