AZL-48811
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-48811.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-48811
- Upstream
- Published
- 2024-08-08T09:15:08Z
- Modified
- 2026-04-01T05:16:06.488078Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-42253 affecting package kernel 5.15.200.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
gpio: pca953x: fix pca953xirqbussyncunlock race
Ensure that `i2clock' is held when setting interrupt latch and mask in pca953xirqbussync_unlock() in order to avoid races.
The other (non-probe) call site pca953xgpiosetmultiple() ensures the lock is held before calling pca953xwrite_regs().
The problem occurred when a request raced against irqbussync_unlock() approximately once per thousand reboots on an i.MX8MP based system.
Normal case
0-0022: write register AI|3a {03,02,00,00,01} Input latch P0 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|12 {fc,00,00,00,00} Config P3
Race case
0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register *** 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0
- References