CVE-2026-46024 (GCVE-0-2026-46024)
Vulnerability from cvelistv5
Published
2026-05-27 12:56
Modified
2026-10-19 19:26
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
Version: 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc
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