Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg When receiving proposal msg in server, the fields v2_ext_offset/ eid_cnt/ism_gid_cnt in proposal msg are from the remote client and can not be fully trusted. Especially the field v2_ext_offset, once exceed the max value, there has the chance to access wrong address, and crash may happen. This patch checks the fields v2_ext_offset/eid_cnt/ism_gid_cnt before using them.

Affected versions

Linux: 8c3dca341aea885249e08856c4380300b75d2cf5 through before 9cc0170ae646876aa5de2f0cad3066ce53e86f27 (git); 8c3dca341aea885249e08856c4380300b75d2cf5 through before 49798283fce4c1a24fb1ba4c7c39127739535571 (git); 8c3dca341aea885249e08856c4380300b75d2cf5 through before 690b9a8db9460d065785548e43fd6a02d247c1b7 (git); 8c3dca341aea885249e08856c4380300b75d2cf5 through before 295a92e3df32e72aff0f4bc25c310e349d07ffbf (git); 8c3dca341aea885249e08856c4380300b75d2cf5 through before 42f6beb2d5779429417b5f8115a4e3fa695d2a6c (git); 8c3dca341aea885249e08856c4380300b75d2cf5 through before 7863c9f3d24ba49dbead7e03dfbe40deb5888fdf (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.