{"id":"CVE-2026-52966","summary":"drm: Replace old pointer to new idr","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Replace old pointer to new idr\n\nCommit 5e28b7b94408 introduced a logical error by failing to replace the\nnewly generated IDR pointer to old id's pointer at the correct location\nwithin the \"change handle\" logic; this resulted in the issue reported by\nsyzbot [1].\n\nSpecifically, the new IDR object pointer is intended to replace the original\nid's pointer during the normal execution flow.\n\nAdditionally, an unnecessary conditional check for the ret exit path has\nbeen removed.\n\n[1]\n!RB_EMPTY_ROOT(&prime_fpriv-\u003edmabufs)\nWARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/5833\nCall Trace:\n drm_file_free.part.0+0x7e6/0xcc0 drivers/gpu/drm/drm_file.c:269\n drm_file_free drivers/gpu/drm/drm_file.c:237 [inline]\n drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:290\n drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:438","modified":"2026-07-12T03:55:17.795463160Z","published":"2026-06-24T16:28:45.891Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52966.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/318b995cffcfcaa69a234d28123a3f4ae186a9df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/38f12d0e10d83b66fa1466400d876a3a8da31542"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dc366607c41c45fd0ae6f3db090f31dd611b644a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52966.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52966"},{"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":"672464dd53231509c9c771110798c56d4660e19e"},{"fixed":"318b995cffcfcaa69a234d28123a3f4ae186a9df"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"61bd96d3e5472c253f9c1ab77608f0c8aaa9d025"},{"fixed":"38f12d0e10d83b66fa1466400d876a3a8da31542"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5e28b7b94408897e41c63477aabc9e1db439bc8c"},{"fixed":"dc366607c41c45fd0ae6f3db090f31dd611b644a"}]}],"versions":["v6.18.32","v7.0.9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52966.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.32"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.0.9"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52966.json"}}],"schema_version":"1.7.5"}