CVE-2022-49315

MEDIUM EPSS 8.7%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop() There is a deadlock in rtllib_beacons_stop(), which is shown below: (Thread 1) | (Thread 2) | rtllib_send_beacon() rtllib_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | rtllib_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold ieee->beacon_lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need ieee->beacon_lock in position (2) of thread 2. As a result, rtllib_beacons_stop() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irqsave(), which could let timer handler to obtain the needed lock.

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
8.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel* <4.9.318
linuxlinux_kernel*≥4.10  –  <4.14.283
linuxlinux_kernel*≥4.15  –  <4.19.247
linuxlinux_kernel*≥4.20  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.122
linuxlinux_kernel*≥5.11  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4

References 9

  • git.kernel.org https://git.kernel.org/stable/c/08bacf871c019163ccd1389d0bc957a43324967a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0f69d7d5e918aa43423d86bd17ddb11b1b5e8ada
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/381045dc64d23a2229c47c5524c06bfc33d34446
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4681129fda9e8555392eaaadb239ec6a6e2b3e12
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46c861009bf437a18417df24cea0d181741b7d72
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64b05fa212c7e4d057676e8b7e7120c6eb2f615b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b6bdbd9337de3917945847bde262a34a87a6303
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fef451f0fbbe85dbd2962b18379d02e2965610db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ffd4c4d5293e4985092ea45ba21cad9326e2e434
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/08bacf871c019163ccd1389d0bc957a43324967a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0f69d7d5e918aa43423d86bd17ddb11b1b5e8ada
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/381045dc64d23a2229c47c5524c06bfc33d34446
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4681129fda9e8555392eaaadb239ec6a6e2b3e12
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46c861009bf437a18417df24cea0d181741b7d72
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64b05fa212c7e4d057676e8b7e7120c6eb2f615b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b6bdbd9337de3917945847bde262a34a87a6303
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fef451f0fbbe85dbd2962b18379d02e2965610db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ffd4c4d5293e4985092ea45ba21cad9326e2e434
    Patch