CVE-2022-49069

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Fix by adding FPU protection for dcn30_internal_validate_bw

[Why]

Below general protection fault observed when WebGL Aquarium is run for

longer duration. If drm debug logs are enabled and set to 0x1f then the

issue is observed within 10 minutes of run.

[ 100.717056] general protection fault, probably for non-canonical address 0x2d33302d32323032: 0000 [#1] PREEMPT SMP NOPTI

[ 100.727921] CPU: 3 PID: 1906 Comm: DrmThread Tainted: G W 5.15.30 #12 d726c6a2d6ebe5cf9223931cbca6892f916fe18b

[ 100.754419] RIP: 0010:CalculateSwathWidth+0x1f7/0x44f

[ 100.767109] Code: 00 00 00 f2 42 0f 11 04 f0 48 8b 85 88 00 00 00 f2 42 0f 10 04 f0 48 8b 85 98 00 00 00 f2 42 0f 11 04 f0 48 8b 45 10 0f 57 c0 <f3> 42 0f 2a 04 b0 0f 57 c9 f3 43 0f 2a 0c b4 e8 8c e2 f3 ff 48 8b

[ 100.781269] RSP: 0018:ffffa9230079eeb0 EFLAGS: 00010246

[ 100.812528] RAX: 2d33302d32323032 RBX: 0000000000000500 RCX: 00000000000

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References