PT-2024-7732 · Linux+9 · Linux Kernel+9
Published
2024-02-19
·
Updated
2025-09-29
·
CVE-2024-26804
CVSS v2.0
6.8
Medium
| Vector | AV:L/AC:L/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The vulnerability is related to the ip tunnel infrastructure in the Linux kernel, which can cause dev->needed headroom to increment indefinitely. This issue can lead to a use-after-free error when the neigh layer attempts to pull the network header, resulting in skb->data pointing to a memory location outside the allocated area. The syzkaller reproducer demonstrates this issue by routing packets via a gre tunnel and an ipip tunnel, causing the needed headroom to inflate until it exceeds 64k, leading to a wraparound of the skb->network header.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu