CVE-2019-10125: linux linux_kernel Use After Free

Vulnerability summary

CVE-2019-10125 is a high (CVSS 10.0) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 5.26% chance of exploitation in the next 30 days, higher than 92.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 27-03-2019
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in aio_poll() in fs/aio.c in the Linux kernel through 5.0.4. A file may be released by aio_poll_wake() if an expected event is triggered immediately (e.g., by the close of a pair of pipes) after the return of vfs_poll(), and this will cause a use-after-free.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.