{"id":"CVE-2026-43406","summary":"libceph: prevent potential out-of-bounds reads in process_message_header()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: prevent potential out-of-bounds reads in process_message_header()\n\nIf the message frame is (maliciously) corrupted in a way that the\nlength of the control segment ends up being less than the size of the\nmessage header or a different frame is made to look like a message\nframe, out-of-bounds reads may ensue in process_message_header().\n\nPerform an explicit bounds check before decoding the message header.","modified":"2026-06-24T09:14:07.692263467Z","published":"2026-05-08T14:21:46.246Z","related":["SUSE-SU-2026:22108-1","SUSE-SU-2026:22137-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2591-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43406.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/035867ae6f18df0aeedb2a57a5b74091bd4e3fe8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/50156622eb0888e62541d715a98584480a1bc7cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69fb5d91bba44ecf7eb80530b85fa4fb028921d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69fe5af33fa3806f398d21c081d73c66e5523bc2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/75582aaa580c11aed4c7731cad6b068b700e7efb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76ccf21a12c5f6d6790bc32c7da82446d877b2f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dbd857a9e1e33ea71eaf3e211877027e533770d1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43406.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43406"},{"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":"cd1a677cad994021b19665ed476aea63f5d54f31"},{"fixed":"76ccf21a12c5f6d6790bc32c7da82446d877b2f4"},{"fixed":"75582aaa580c11aed4c7731cad6b068b700e7efb"},{"fixed":"50156622eb0888e62541d715a98584480a1bc7cb"},{"fixed":"dbd857a9e1e33ea71eaf3e211877027e533770d1"},{"fixed":"69fe5af33fa3806f398d21c081d73c66e5523bc2"},{"fixed":"035867ae6f18df0aeedb2a57a5b74091bd4e3fe8"},{"fixed":"69fb5d91bba44ecf7eb80530b85fa4fb028921d5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43406.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43406.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}