{"cve":{"cve_id":"CVE-2026-52954","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"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 ]","published_at":"2026-06-24T16:28:36.992000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_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"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:22.518073Z","updated_at":"2026-06-28T23:30:49.890169Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"c7bf7864e2924fa5508ac270b0e9364bc13d5a6c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:c7bf7864e2924fa5508ac270b0e9364bc13d5a6c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"f47430fc1f815e87406e2d3b4e476eff1bc7fd9b","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:f47430fc1f815e87406e2d3b4e476eff1bc7fd9b"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"534ebc08df97c47d4c7596f336fa31ecbf91519c","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:534ebc08df97c47d4c7596f336fa31ecbf91519c"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"80c73bd1b2b04355d1d0c29be8ccbd25a380905d","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:80c73bd1b2b04355d1d0c29be8ccbd25a380905d"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"4d2b37abda9536808655830d683dc491d31741a8","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:4d2b37abda9536808655830d683dc491d31741a8"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"0a1265a9ab875f92b6a3ffb497404f46cf9d76a3","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:0a1265a9ab875f92b6a3ffb497404f46cf9d76a3"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","version_start_inclusive":true,"version_end":"d289478cfc0bcf81c7914200d6abdcb78bd04ded","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1da177e4c3f41524e886b7f1b8a0c1fc7321cac2:d289478cfc0bcf81c7914200d6abdcb78bd04ded"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.10.258","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.10.258"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"5.15.209","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:5.15.209"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.1.175","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.1.175"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.6.141","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.6.141"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.12.91","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.12.91"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.18.33","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.18.33"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start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published","source":null}]}