CVE-2022-50317

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 36/100

Published: 2025-09-15 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: None

I: None

A: High

Description

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.

Weakness Classification (1)

CWE-476

Affected Software (17)

Vendor	Product	Version
Linux	Linux	7649972d97fb98578fbc4a351416cf72895e7c4d < aaa512ad1e59f2edf8a9e4f2b167a44b24670679
Linux	Linux	16e3827904932eccfba0915f0c93b519de3536ac < 5bc20bafcd87ba0858ab772cefc7047cb51bc249
Linux	Linux	50ad94f8654a53ec9ca3604a7a23cbaf166e0119 < 1daf69228e310938177119c4eadcd30fc75c81e0
Linux	Linux	b8d10f601f226f055df8b5368d7ea7f369136cd5 < 877e92e9b1bdeb580b31a46061005936be902cd4
Linux	Linux	405856460d3e7aefb7c1aef047ec88fc4ef2e2a5 < 4610e7a4111fa3f3ce27c09d6d94008c55f1cd31
Linux	Linux	11632d4aa2b3f126790e81a4415d6c23103cf8bb < 21764467ab396d9f08921e0a5ffa1214244e1ad9
Linux	Linux	11632d4aa2b3f126790e81a4415d6c23103cf8bb < 7371fad5cfe6eada6bb5523c895fd6074b15c2b9
Linux	Linux	11632d4aa2b3f126790e81a4415d6c23103cf8bb < 1ff673333d46d2c1b053ebd0c1c7c7c79e36943e
Linux	Linux	e449461989f0674f188d30494ffd3f5ba74c1a05
Linux	Linux	4.14.263 < 4.14.296
Linux	Linux	4.19.226 < 4.19.262
Linux	Linux	5.4.174 < 5.4.220
Linux	Linux	5.10.94 < 5.10.150
Linux	Linux	5.15.17 < 5.15.75
Linux	Linux	5.16.3 < 5.17
Linux	Linux	5.17
linux	linux_kernel	4.14.263 – 4.14.296