CVE-2023-2236
Published: October 18, 2023Last modified: October 18, 2023
Description
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Both io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability. We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack Vector | LOCAL |
Attack complexity | LOW |
Privileges required | LOW |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | HIGH |
Integrity impact | HIGH |
Availability impact | HIGH |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | Stream | linux-lts | Unknown (6.1.33-r0) |