CVE-2023-26605 Use after free in n/a
A use-after-free in the Linux kernel writeback subsystem allows attackers to execute arbitrary code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-26605?
CVE-2023-26605 is a high-severity use after free vulnerability in Linux kernel, published on 26 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel 6.0.8, there is a use-after-free in inode_cgwb_move_to_attached in fs/fs-writeback.c, related to __list_del_entry_valid.
Weakness: CWE-416
Which versions are affected by CVE-2023-26605?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-26605?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-26605 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26605 exists.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2023-26605, GHSA-95xh-qwg7-2r9x, UBUNTU-CVE-2023-26605.