Linux vulnerability

What happened

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 versions

Linux: 5c21c4ccafe85906db809de3af391fd434df8a27 through before 35da53027c1f2efdd7d0177dc00584134204761a (git); 5c21c4ccafe85906db809de3af391fd434df8a27 through before a36364d8d4fabb105001f992fb8ff2d3546203d6 (git); 5c21c4ccafe85906db809de3af391fd434df8a27 through before e1cc8be2a785a8f1ce1f597f3e608602c5fccd46 (git); 5c21c4ccafe85906db809de3af391fd434df8a27 through before 935caf324b445fe73d7708fae6f7176fb243f357 (git); 5c21c4ccafe85906db809de3af391fd434df8a27 through before 48d5a8a304a643613dab376a278f29d3e22f7c34 (git); 5c21c4ccafe85906db809de3af391fd434df8a27 through before 9ab332deb671d8f7e66d82a2ff2b3f715bc3a4ad (git); 5.10 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.