CVE-2026-43406

CRITICAL EPSS 39.1%
Published May 8, 20261mo ago · Modified Jun 17, 20261w ago
9.1 CVSS 3.1
Critical
Find Similar
Published May 8, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in process_message_header() If the message frame is (maliciously) corrupted in a way that the length of the control segment ends up being less than the size of the message header or a different frame is made to look like a message frame, out-of-bounds reads may ensue in process_message_header(). Perform an explicit bounds check before decoding the message header.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
39.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 9

VendorProductVersionRange
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  –  <6.12.78
linuxlinux_kernel*≥6.13  –  <6.18.19
linuxlinux_kernel*≥6.19  –  <6.19.9
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1
    Patch