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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-46024 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply() If a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both protocol and result, this is currently not treated as an error. In case of ac->negotiating == true and ac->protocol > 0, this leads to setting ac->protocol = 0 and ac->ops = NULL. Thereafter, the check for ac->protocol != protocol returns false, and init_protocol() is not called. Subsequently, ac->ops->handle_reply() is called, which leads to a null pointer dereference, because ac->ops is still NULL. This patch changes the check for ac->protocol != protocol to !ac->protocol, as this also includes the case when the protocol was set to zero in the message. This causes the message to be treated as containing a bad auth protocol.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77 kernel.org
https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d kernel.org
https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e kernel.org
https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e kernel.org
https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-46024
NVD Published Date:
05/27/2026
NVD Last Modified:
05/27/2026
Source:
kernel.org