CVE-2024-49571 net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg

What is CVE-2024-49571?

CVE-2024-49571 is a critical vulnerability in Linux kernel, published on 11 Jan 2025. 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:

net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg

When receiving proposal msg in server, the field iparea_offset and the field ipv6_prefixes_cnt in proposal msg are from the remote client and can not be fully trusted. Especially the field iparea_offset, once exceed the max value, there has the chance to access wrong address, and crash may happen.

This patch checks iparea_offset and ipv6_prefixes_cnt before using them.

Which versions are affected by CVE-2024-49571?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49571?

Apply the vendor's patch.

Is CVE-2024-49571 being exploited?

There is no known exploitation of CVE-2024-49571 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-2024-49571, DEBIAN-CVE-2024-49571, GHSA-xjw7-4j5c-v8ww, ROOT-OS-DEBIAN-11-CVE-2024-49571, UBUNTU-CVE-2024-49571.