Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock).
https://ubuntu.com/security/notices/USN-6127-1
https://ubuntu.com/security/notices/USN-6124-1
https://ubuntu.com/security/notices/USN-6123-1
https://ubuntu.com/security/notices/USN-6122-1
https://ubuntu.com/security/CVE-2023-2612
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/kinetic/commit/?id=02b47547824b1cd0d55c6744f91886f04de8947e
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
Source: Mitre, NVD
Published: 2023-05-31
Updated: 2023-06-22
Base Score: 3.8
Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:N/A:C
Severity: Low
Base Score: 4.7
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity: Medium
EPSS: 0.00038