CVE-2025-23147

MEDIUM EPSS 6.6%

Published May 1, 20251y ago · Modified Jun 17, 20261w ago

5.5 CVSS 3.1

Medium

Published May 1, 2025 1y ago

Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: i3c: Add NULL pointer check in i3c_master_queue_ibi() The I3C master driver may receive an IBI from a target device that has not been probed yet. In such cases, the master calls `i3c_master_queue_ibi()` to queue an IBI work task, leading to "Unable to handle kernel read from unreadable memory" and resulting in a kernel panic. Typical IBI handling flow: 1. The I3C master scans target devices and probes their respective drivers. 2. The target device driver calls `i3c_device_request_ibi()` to enable IBI and assigns `dev->ibi = ibi`. 3. The I3C master receives an IBI from the target device and calls `i3c_master_queue_ibi()` to queue the target device driver’s IBI handler task. However, since target device events are asynchronous to the I3C probe sequence, step 3 may occur before step 2, causing `dev->ibi` to be `NULL`, leading to a kernel panic. Add a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing an uninitialized `dev->ibi`, ensuring stability.

CVSS Details

Base Score

5.5

Exploitability

1.8

Impact

3.6

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

6.6% percentile

Exploit & Patch Status

No Known Exploit

Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 9

Vendor	Product	Version	Range
linux	linux_kernel	*	≥5.0 – <5.4.293
linux	linux_kernel	*	≥5.5 – <5.10.237
linux	linux_kernel	*	≥5.11 – <5.15.181
linux	linux_kernel	*	≥5.16 – <6.1.135
linux	linux_kernel	*	≥6.2 – <6.6.88
linux	linux_kernel	*	≥6.7 – <6.12.24
linux	linux_kernel	*	≥6.13 – <6.13.12
linux	linux_kernel	*	≥6.14 – <6.14.3
debian	debian_linux	11.0	any

References 11

git.kernel.org https://git.kernel.org/stable/c/09359e7c8751961937cb5fc50220969b0a4e1058

Patch
git.kernel.org https://git.kernel.org/stable/c/1b54faa5f47fa7c642179744aeff03f0810dc62e

Patch
git.kernel.org https://git.kernel.org/stable/c/3ba402610843d7d15c7f3966a461deeeaff7fba4

Patch
git.kernel.org https://git.kernel.org/stable/c/6871a676aa534e8f218279672e0445c725f81026

Patch
git.kernel.org https://git.kernel.org/stable/c/bd496a44f041da9ef3afe14d1d6193d460424e91

Patch
git.kernel.org https://git.kernel.org/stable/c/d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f

Patch
git.kernel.org https://git.kernel.org/stable/c/e6bba328578feb58c614c11868c259b40484c5fa

Patch
git.kernel.org https://git.kernel.org/stable/c/fe4a4fc179b7898055555a11685915473588392e

Patch
git.kernel.org https://git.kernel.org/stable/c/ff9d61db59bb27d16d3f872bff2620d50856b80c

Patch
lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Mailing List
lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Mailing List

Remediation

git.kernel.org https://git.kernel.org/stable/c/09359e7c8751961937cb5fc50220969b0a4e1058

Patch
git.kernel.org https://git.kernel.org/stable/c/1b54faa5f47fa7c642179744aeff03f0810dc62e

Patch
git.kernel.org https://git.kernel.org/stable/c/3ba402610843d7d15c7f3966a461deeeaff7fba4

Patch
git.kernel.org https://git.kernel.org/stable/c/6871a676aa534e8f218279672e0445c725f81026

Patch
git.kernel.org https://git.kernel.org/stable/c/bd496a44f041da9ef3afe14d1d6193d460424e91

Patch
git.kernel.org https://git.kernel.org/stable/c/d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f

Patch
git.kernel.org https://git.kernel.org/stable/c/e6bba328578feb58c614c11868c259b40484c5fa

Patch
git.kernel.org https://git.kernel.org/stable/c/fe4a4fc179b7898055555a11685915473588392e

Patch
git.kernel.org https://git.kernel.org/stable/c/ff9d61db59bb27d16d3f872bff2620d50856b80c

Patch