Description
A time-of-check to time-of-use issue exists in io_uring subsystem's IORING_OP_CLOSE operation in the Linux kernel's versions 5.6 - 5.11 (inclusive), which allows a local user to elevate their privileges to root. Introduced in b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb, patched in 9eac1904d3364254d622bf2c771c4f85cd435fc2, backported to stable in 788d0824269bef539fe31a785b1517882eafed93.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux Kernel
Default version status: unaffected
5.6 to ≤ 5.11affected
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9eac1904d3364254d622bf2c771c4f85cd435fc2 ↗
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=788d0824269bef539fe31a785b1517882eafed93 ↗
- https://kernel.dance/9eac1904d3364254d622bf2c771c4f85cd435fc2 ↗
- https://kernel.dance/788d0824269bef539fe31a785b1517882eafed93 ↗
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b5dba59e0cf7e2cc4d3b3b1ac5fe81ddf21959eb ↗
- https://security.netapp.com/advisory/ntap-20230731-0006/ ↗