i3c: Add NULL pointer check in i3c_master_queue_ibi() (Linux Linux)

CVE-2025-23147
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 1b54faa5f47fa7c642179744aeff03f0810dc62e ; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 09359e7c8751961937cb5fc50220969b0a4e1058 ; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 3ba402610843d7d15c7f3966a461deeeaff7fba4 ; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47f ; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 6871a676aa534e8f218279672e0445c725f81026 ; affected 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < e6bba328578feb58c614c11868c259b40484c5fa
Linux · Linuxaffected 5.0 ; unaffected 0 < 5.0 ; unaffected 5.4.293 ≤ 5.4.* ; unaffected 5.10.237 ≤ 5.10.* ; unaffected 5.15.181 ≤ 5.15.* ; unaffected 6.1.135 ≤ 6.1.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD