{"id":"CVE-2026-68433","summary":"libceph: bound get_version reply decode to front len","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: bound get_version reply decode to front len\n\nhandle_get_version_reply() uses msg-\u003efront_alloc_len as the decode\nboundary for MON_GET_VERSION_REPLY.  That is the size of the reused\nreply buffer, not the number of bytes actually received.\n\nA truncated reply can therefore pass ceph_decode_need() and decode the\nsecond u64 from stale tail bytes left in the buffer by an earlier\nmessage, causing an uninitialized memory read.\n\nUse msg-\u003efront.iov_len as the receive-side decode boundary, matching\nother libceph reply handlers and limiting decoding to the bytes that\nwere actually read from the wire.","modified":"2026-08-18T03:31:08.234216065Z","published":"2026-08-12T00:07:20.455Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68433.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d934c934ec746d53fc7e4f53239792647bbae63"},{"type":"WEB","url":"https://git.kernel.org/stable/c/340e0386aa39da181015bee38f309018c335ce16"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4e7ebfaa0d14cf50e44041bfde38070d6dbc019f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d60de8253c85a02d0e6194b0735e7a562981a04c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68433.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68433"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"513a8243d67f8e8d27f2883bd2f18bc87c7ca376"},{"fixed":"340e0386aa39da181015bee38f309018c335ce16"},{"fixed":"d60de8253c85a02d0e6194b0735e7a562981a04c"},{"fixed":"4e7ebfaa0d14cf50e44041bfde38070d6dbc019f"},{"fixed":"0d934c934ec746d53fc7e4f53239792647bbae63"},{"fixed":"d3c32939fa0e3ee9b883b9a0fd1972c5c444e3d0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68433.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.16.0"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68433.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"}]}