{"id":"CVE-2026-52954","revision":"764591ac12c5442dbb678e01e7660c8f","records":[{"revision":"764591ac12c5442dbb678e01e7660c8f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52954","aliases":[],"title":"libceph: handle rbtree insertion error in decode_choose_args()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: handle rbtree insertion error in decode_choose_args()\n\nA message of type CEPH_MSG_OSD_MAP contains an OSD map that itself\ncontains a CRUSH map. The received CRUSH map may optionally contain\nchoose_args that get decoded in decode_choose_args(). In this function,\nnum_choose_arg_maps is read from the message, and a corresponding number\nof crush_choose_arg_maps gets decoded afterwards. Each\ncrush_choose_arg_map has a choose_args_index, which serves as the key\nwhen inserting it into the choose_args rbtree of the decoded crush_map.\nIf a (potentially corrupted) message contains two crush_choose_arg_maps\nwith the same index, the assertion in insert_choose_arg_map() triggers a\nkernel BUG when trying to insert the second crush_choose_arg_map.\n\nThis patch fixes the issue by switching to the non-asserting rbtree\ninsertion function and rejecting the message if the insertion fails.\n\n[ idryomov: changelog ]","state":0,"publishedAt":"2026-06-24T16:28:36.992+00:00","modifiedAt":"2026-10-19T19:47:09.795+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ceph/osdmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"c7bf7864e2924fa5508ac270b0e9364bc13d5a6c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"f47430fc1f815e87406e2d3b4e476eff1bc7fd9b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"534ebc08df97c47d4c7596f336fa31ecbf91519c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"80c73bd1b2b04355d1d0c29be8ccbd25a380905d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"4d2b37abda9536808655830d683dc491d31741a8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"0a1265a9ab875f92b6a3ffb497404f46cf9d76a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5cf9c4a9959b6273675310d14a834ef14fbca37c\",\n                            \"lessThan\": \"d289478cfc0bcf81c7914200d6abdcb78bd04ded\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ceph/osdmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.141\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.91\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c","https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b","https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da","https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c","https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d","https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8","https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3","https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52954","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52954","identifiers":["CVE-2026-52954"]},"retained":false,"historicalAffected":[]}],"coverage":[]}