CVE-2026-23298

MEDIUM EPSS 2.4%
Published Mar 25, 20263mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Mar 25, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: can: ucan: Fix infinite loop from zero-length messages If a broken ucan device gets a message with the message length field set to 0, then the driver will loop for forever in ucan_read_bulk_callback(), hanging the system. If the length is 0, just skip the message and go on to the next one. This has been fixed in the kvaser_usb driver in the past in commit 0c73772cd2b8 ("can: kvaser_usb: leaf: Fix potential infinite loop in command parsers"), so there must be some broken devices out there like this somewhere.

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
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-835

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.19  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.167
linuxlinux_kernel*≥6.2  –  <6.6.130
linuxlinux_kernel*≥6.7  –  <6.12.77
linuxlinux_kernel*≥6.13  –  <6.18.17
linuxlinux_kernel*≥6.19  –  <6.19.7
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115
    Patch