Use-after-free in Linux kernel - CVE-2026-93262
Published: September 25, 2026
Vulnerability identifier: #VU152145
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93262
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to trigger a use-after-free condition.
The vulnerability exists due to use-after-free in ppl_do_flush() when processing RAID5 PPL flushes. A local user can cause ppl_io_unit_finished() to free the io object while the loop continues accessing io->pending_flushes to trigger a use-after-free condition.
Affected software
Linux kernel
How to mitigate CVE-2026-93262
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/371f7a1b392edc8b7cf449cc7713179b588f2d0e
- https://git.kernel.org/stable/c/455b56209f9615c3902dcc398dd867abb5ade3ab
- https://git.kernel.org/stable/c/8914c3d40870f16429a326e97e4016bedc6ede4c
- https://git.kernel.org/stable/c/b5123bf667ac29ddd8106f9ca7cc01316513ae66
- https://git.kernel.org/stable/c/cf01f9413565e86673baf927291a088b6975692b
- https://git.kernel.org/stable/c/e7505842f1329ece90cb9ea0db87772aeca44052
- https://git.kernel.org/stable/c/e77c80670f2c2bf491da9b173931e1da4677c23a
- https://git.kernel.org/stable/c/fcf21df7d3c50c8ebeb0757df5d21b02dcae4218