CVE-2024-46791

MEDIUM EPSS 5.8%
Published Sep 18, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 18, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open The mcp251x_hw_wake() function is called with the mpc_lock mutex held and disables the interrupt handler so that no interrupts can be processed while waking the device. If an interrupt has already occurred then waiting for the interrupt handler to complete will deadlock because it will be trying to acquire the same mutex. CPU0 CPU1 ---- ---- mcp251x_open() mutex_lock(&priv->mcp_lock) request_threaded_irq() <interrupt> mcp251x_can_ist() mutex_lock(&priv->mcp_lock) mcp251x_hw_wake() disable_irq() <-- deadlock Use disable_irq_nosync() instead because the interrupt handler does everything while holding the mutex so it doesn't matter if it's still running.

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
5.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.5  –  <5.10.226
linuxlinux_kernel*≥5.11  –  <5.15.167
linuxlinux_kernel*≥5.16  –  <6.1.110
linuxlinux_kernel*≥6.2  –  <6.6.51
linuxlinux_kernel*≥6.7  –  <6.10.10
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any
linuxlinux_kernel6.11any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/3a49b6b1caf5cefc05264d29079d52c99cb188e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/513c8fc189b52f7922e36bdca58997482b198f0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dd9c26bd6cf679bcfdef01a8659791aa6487a29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8fecde9c3f9a4b97b68bb97c9f47e5b662586ba7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e554113a1cd2a9cfc6c7af7bdea2141c5757e188
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7ab9e14b23a3eac6714bdc4dba244d8aa1ef646
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3a49b6b1caf5cefc05264d29079d52c99cb188e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/513c8fc189b52f7922e36bdca58997482b198f0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7dd9c26bd6cf679bcfdef01a8659791aa6487a29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8fecde9c3f9a4b97b68bb97c9f47e5b662586ba7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e554113a1cd2a9cfc6c7af7bdea2141c5757e188
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f7ab9e14b23a3eac6714bdc4dba244d8aa1ef646
    Patch