CVE-2025-71274

Advisory lineage Upstream: 0 Downstream: 7
Analyzed
Published: 06 May 2026, 11:27
Last modified:11 May 2026, 21:57

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

06 May 2026, 11:27
Published
Vulnerability first disclosed
11 May 2026, 21:57
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.09%• Percentile: 1%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • linux•linux

    ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < d66b8074c555e8abb0ae19eea1c9f3635498bdde | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 47615557447185917afa432b7958f87583c417cb | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 90c8353f471821d7ccd4fe573a2402e056192494 | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 7654e6e3cd6bdee9602f6063b3c670bd556d7e61 | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 2e4a70f3c30910427e5ea848b799066d67b963d5 | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 954557957177c3c13d7c655976665b1170da5e50 | ≥ 39e47767ec9b22f844c2a07c9d329256960d4021, < 42023d4b6d2661a40ee2dcf7e1a3528a35c638ca | 4.18

  • linux•linux kernel

    ≥ 4.18, < 5.10.252 | ≥ 5.11, < 5.15.202 | ≥ 5.16, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6

References (8)