CVE-2026-46039 rxgk: Fix potential integer overflow in length check

What is CVE-2026-46039?

CVE-2026-46039 is a critical vulnerability in Linux kernel, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

rxgk: Fix potential integer overflow in length check

Fix potential integer overflow in rxgk_extract_token() when checking the length of the ticket. Rather than rounding up the value to be tested (which might overflow), round down the size of the available data.

Weakness: CWE-190

Which versions are affected by CVE-2026-46039?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-46039?

Apply the vendor's patch.

Is CVE-2026-46039 being exploited?

There is no known exploitation of CVE-2026-46039 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-46039, DEBIAN-CVE-2026-46039, GHSA-8p5g-g3v4-xpm6, UBUNTU-CVE-2026-46039.