What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-01-11 · updated 2026-08-04

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.

Affected products

• Linux kernel: from 4.16 before 5.10.233; from 5.11 before 5.15.176; from 5.16 before 6.1.122; from 6.2 before 6.6.68; from 6.7 before 6.12.7; 6.13-rc1, 6.13-rc2, 6.13-rc3 — fixed in 5.10.233, 5.15.176, 6.1.122, 6.12.7, 6.6.68

How to fix

Upgrade to a fixed version: Linux kernel 5.10.233, 5.15.176, 6.1.122, 6.12.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/47ce46349672a7e0c361bfe39ed0b22e824ef4fb
• https://git.kernel.org/stable/c/62056d1592e63d85e82357ee2ae6a6a294f440b0
• https://git.kernel.org/stable/c/846bada23bfcdeb83621b045ed85dc06c7833ff0
• https://git.kernel.org/stable/c/91a7c27c1444ed4677b83fd5308d2cf03f5f0851
• https://git.kernel.org/stable/c/a29e220d3c8edbf0e1beb0f028878a4a85966556
• https://git.kernel.org/stable/c/f10635268a0a49ee902a3b63b5dbb76f4fed498e
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

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