SB2026052861 - NULL pointer dereference in Linux kernel ceph
Published: May 28, 2026
Security Bulletin ID
SB2026052861
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-46024)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in ceph_handle_auth_reply() when handling a crafted CEPH_MSG_AUTH_REPLY message. A remote attacker can send a specially crafted auth reply message to cause a denial of service.
The issue is triggered when both the protocol and result fields in the message are zero.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77
- https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d
- https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e
- https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e
- https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548