{"id":"CVE-2025-71274","summary":"rpmsg: core: fix race in driver_override_show() and use core helper","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: core: fix race in driver_override_show() and use core helper\n\nThe driver_override_show function reads the driver_override string\nwithout holding the device_lock. However, the store function modifies\nand frees the string while holding the device_lock. This creates a race\ncondition where the string can be freed by the store function while\nbeing read by the show function, leading to a use-after-free.\n\nTo fix this, replace the rpmsg_string_attr macro with explicit show and\nstore functions. The new driver_override_store uses the standard\ndriver_set_override helper. Since the introduction of\ndriver_set_override, the comments in include/linux/rpmsg.h have stated\nthat this helper must be used to set or clear driver_override, but the\nimplementation was not updated until now.\n\nBecause driver_set_override modifies and frees the string while holding\nthe device_lock, the new driver_override_show now correctly holds the\ndevice_lock during the read operation to prevent the race.\n\nAdditionally, since rpmsg_string_attr has only ever been used for\ndriver_override, removing the macro simplifies the code.","modified":"2026-06-18T03:54:43.976739895Z","published":"2026-05-06T11:27:07.525Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71274.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2e4a70f3c30910427e5ea848b799066d67b963d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/42023d4b6d2661a40ee2dcf7e1a3528a35c638ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/47615557447185917afa432b7958f87583c417cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7654e6e3cd6bdee9602f6063b3c670bd556d7e61"},{"type":"WEB","url":"https://git.kernel.org/stable/c/90c8353f471821d7ccd4fe573a2402e056192494"},{"type":"WEB","url":"https://git.kernel.org/stable/c/954557957177c3c13d7c655976665b1170da5e50"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d66b8074c555e8abb0ae19eea1c9f3635498bdde"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71274.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-71274"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"39e47767ec9b22f844c2a07c9d329256960d4021"},{"fixed":"392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d"},{"fixed":"d66b8074c555e8abb0ae19eea1c9f3635498bdde"},{"fixed":"47615557447185917afa432b7958f87583c417cb"},{"fixed":"90c8353f471821d7ccd4fe573a2402e056192494"},{"fixed":"7654e6e3cd6bdee9602f6063b3c670bd556d7e61"},{"fixed":"2e4a70f3c30910427e5ea848b799066d67b963d5"},{"fixed":"954557957177c3c13d7c655976665b1170da5e50"},{"fixed":"42023d4b6d2661a40ee2dcf7e1a3528a35c638ca"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-71274.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.18.0"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-71274.json"}}],"schema_version":"1.7.5"}