CVE-2026-43406

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43406
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.

9.1 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

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

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
History

21 May 2026, 19:09

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8 - () https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8 - Patch
References () https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb - () https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb - Patch
References () https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5 - () https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5 - Patch
References () https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2 - () https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2 - Patch
References () https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb - () https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb - Patch
References () https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4 - () https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4 - Patch
References () https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1 - () https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1 - Patch
CWE CWE-125
First Time Linux linux Kernel
Linux

11 May 2026, 08:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.1

08 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-08 15:16

Updated : 2026-05-21 19:09

NVD link : CVE-2026-43406

Mitre link : CVE-2026-43406

CVE.ORG link : CVE-2026-43406

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read