In the Linux kernel, the following vulnerability has been resolved:
rpmsg: core: fix race in driver_override_show() and use core helper
The driver_override_show function reads the driver_override string
without holding the device_lock. However, the store function modifies
and frees the string while holding the device_lock. This creates a race
condition where the string can be freed by the store function while
being read by the show function, leading to a use-after-free.
To fix this, replace the rpmsg_string_attr macro with explicit show and
store functions. The new driver_override_store uses the standard
driver_set_override helper. Since the introduction of
driver_set_override, the comments in include/linux/rpmsg.h have stated
that this helper must be used to set or clear driver_override, but the
implementation was not updated until now.
Because driver_set_override modifies and frees the string while holding
the device_lock, the new driver_override_show now correctly holds the
device_lock during the read operation to prevent the race.
Additionally, since rpmsg_string_attr has only ever been used for
driver_override, removing the macro simplifies the code.
References
Configurations
Configuration 1 (hide)
|
History
12 May 2026, 21:25
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.7 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | CWE-362 | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/2e4a70f3c30910427e5ea848b799066d67b963d5 - Patch | |
| References | () https://git.kernel.org/stable/c/392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d - Patch | |
| References | () https://git.kernel.org/stable/c/42023d4b6d2661a40ee2dcf7e1a3528a35c638ca - Patch | |
| References | () https://git.kernel.org/stable/c/47615557447185917afa432b7958f87583c417cb - Patch | |
| References | () https://git.kernel.org/stable/c/7654e6e3cd6bdee9602f6063b3c670bd556d7e61 - Patch | |
| References | () https://git.kernel.org/stable/c/90c8353f471821d7ccd4fe573a2402e056192494 - Patch | |
| References | () https://git.kernel.org/stable/c/954557957177c3c13d7c655976665b1170da5e50 - Patch | |
| References | () https://git.kernel.org/stable/c/d66b8074c555e8abb0ae19eea1c9f3635498bdde - Patch |
06 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-06 12:16
Updated : 2026-05-12 21:25
NVD link : CVE-2025-71274
Mitre link : CVE-2025-71274
CVE.ORG link : CVE-2025-71274
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')