CVE-2023-42752 Kernel: integer overflow in igmpv3_newpack leading to exploitable memory access
An integer overflow in the Linux kernel's IGMP handling allows local attackers to exploit memory access flaws, potentially leading to privilege escalation or code execution.
- 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-2023-42752?
CVE-2023-42752 is a medium-severity vulnerability in Linux kernel, published on 13 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An integer overflow flaw was found in the Linux kernel. This issue leads to the kernel allocating `skb_shared_info` in the userspace, which is exploitable in systems without SMAP protection since `skb_shared_info` contains references to function pointers.
Weakness: CWE-190
Which versions are affected by CVE-2023-42752?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-42752?
Apply the vendor's patch.
Is CVE-2023-42752 being exploited?
There is no known exploitation of CVE-2023-42752 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-31521, BELL-CVE-2023-42752, DEBIAN-CVE-2023-42752, GHSA-hh43-rpvg-j35f, UBUNTU-CVE-2023-42752.