CVE-2022-48887

MEDIUM EPSS 13.1%
Published Aug 21, 20241y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 21, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Remove rcu locks from user resources User resource lookups used rcu to avoid two extra atomics. Unfortunately the rcu paths were buggy and it was easy to make the driver crash by submitting command buffers from two different threads. Because the lookups never show up in performance profiles replace them with a regular spin lock which fixes the races in accesses to those shared resources. Fixes kernel oops'es in IGT's vmwgfx execution_buffer stress test and seen crashes with apps using shared resources.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
13.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥4.20  –  <6.1.7
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any

References 2

  • git.kernel.org https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50
    Patch