{"id":"CVE-2026-68433","aliases":[],"url":"https://o3.security/vulnerability/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->front_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->front.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.","published":"2026-08-12T00:07:20.455Z","modified":"2026-08-14T04:03:38.882794298Z","cvss":{"score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.148"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:03:38.882794298Z"}}