CVE-2026-31747

HIGH EPSS 2.9%
Published May 1, 20262mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: me4000: Fix potential overrun of firmware buffer `me4000_xilinx_download()` loads the firmware that was requested by `request_firmware()`. It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable `file_length` and reads the data stream contents of length `file_length` from offset 16 onwards. Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return `-EINVAL`. Note: The firmware loading was totally broken before commit ac584af59945 ("staging: comedi: me4000: fix firmware downloading"), but that is the most sensible target for this fix.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 13

VendorProductVersionRange
linuxlinux_kernel*≥3.19  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1603dd471f47762e9d1f52304edb3e49a7e62655
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3fb43a7a5b44713f892c58ead2e5f3a1bc9f4ee7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64b24b713e1a3ea6624480594b4f8c2ff86502f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ddfe6495c245226a30d8b36e2f4a7aa7712e8d6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99f31aa98ab6e3805c455b65bcd01b3d48bdf1a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de3f923ae7d91480ed3ecea1b1e1fc0dc25b597d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eae19cab44204537f79146f15a51811b13227c38
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f72b5567f7c117b46b4058dc6a0c7554f8565561
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1603dd471f47762e9d1f52304edb3e49a7e62655
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3fb43a7a5b44713f892c58ead2e5f3a1bc9f4ee7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/64b24b713e1a3ea6624480594b4f8c2ff86502f2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ddfe6495c245226a30d8b36e2f4a7aa7712e8d6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99f31aa98ab6e3805c455b65bcd01b3d48bdf1a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de3f923ae7d91480ed3ecea1b1e1fc0dc25b597d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eae19cab44204537f79146f15a51811b13227c38
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f72b5567f7c117b46b4058dc6a0c7554f8565561
    Patch