What’s Vulnerable › Vulnerabilities

CVE-2024-47408: net/smc: check smcd_v2_ext_offset 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 2026-10-03

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: check smcd_v2_ext_offset when receiving proposal msg When receiving proposal msg in server, the field smcd_v2_ext_offset in proposal msg is from the remote client and can not be fully trusted. Once the value of smcd_v2_ext_offset exceed the max value, there has the chance to access wrong address, and crash may happen. This patch checks the value of smcd_v2_ext_offset before using it.

Affected products

• Linux kernel: from 5.10 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 5.15.176, 6.1.122, 6.12.7, 6.6.68

How to fix

Upgrade to a fixed version: Linux kernel 5.15.176, 6.1.122, 6.12.7, 6.6.68. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/35da53027c1f2efdd7d0177dc00584134204761a
• https://git.kernel.org/stable/c/48d5a8a304a643613dab376a278f29d3e22f7c34
• https://git.kernel.org/stable/c/935caf324b445fe73d7708fae6f7176fb243f357
• https://git.kernel.org/stable/c/9ab332deb671d8f7e66d82a2ff2b3f715bc3a4ad
• https://git.kernel.org/stable/c/a36364d8d4fabb105001f992fb8ff2d3546203d6
• https://git.kernel.org/stable/c/e1cc8be2a785a8f1ce1f597f3e608602c5fccd46
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

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