{"schema_version":"1.7.5","id":"CVE-2026-46024","published":"2026-05-27T12:56:29.932Z","modified":"2026-07-24T18:30:02.408420541Z","related":["SUSE-SU-2026:22108-1","SUSE-SU-2026:22137-1","SUSE-SU-2026:22433-1","SUSE-SU-2026:22458-1","SUSE-SU-2026:22742-1","SUSE-SU-2026:22769-1","SUSE-SU-2026:2450-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2591-1","openSUSE-SU-2026:10954-1","openSUSE-SU-2026:21388-1"],"summary":"libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac->negotiating == true and ac->protocol > 0, this leads to setting\nac->protocol = 0 and ac->ops = NULL. Thereafter, the check for\nac->protocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac->ops->handle_reply() is called, which leads to\na null pointer dereference, because ac->ops is still NULL.\n\nThis patch changes the check for ac->protocol != protocol to\n!ac->protocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc"},{"fixed":"9ded62c302c0342efdb5eda3bf6e75720caad0df"},{"fixed":"f101271fcf55d7eacfefd610b51ec65f46ba8118"},{"fixed":"4b2738b93edad661178340239de657d876b73d3d"},{"fixed":"927e4bd5692f2a4901808822981fb2c8d4456548"},{"fixed":"016bc663657366d386993f63eb31072eb45a2b77"},{"fixed":"8f2be7285941a33a9f72579a23b96392f83c758e"},{"fixed":"5199c125d25aeae8615c4fc31652cc0fe624338e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46024.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.34"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.140"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.86"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.27"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46024.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46024.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46024"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46024.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}