{"id":"CVE-2026-52966","state":"PUBLISHED","title":"drm: Replace old pointer to new idr","description":"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->dmabufs)\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","publishedAt":"2026-06-24T16:28:45.891Z","updatedAt":"2026-06-24T16:28:45.891Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"672464dd53231509c9c771110798c56d4660e19e","status":"affected","lessThan":"318b995cffcfcaa69a234d28123a3f4ae186a9df","versionType":"git"},{"version":"61bd96d3e5472c253f9c1ab77608f0c8aaa9d025","status":"affected","lessThan":"38f12d0e10d83b66fa1466400d876a3a8da31542","versionType":"git"},{"version":"5e28b7b94408897e41c63477aabc9e1db439bc8c","status":"affected","lessThan":"dc366607c41c45fd0ae6f3db090f31dd611b644a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/drm_gem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6.18.32","status":"affected","lessThan":"6.18.33","versionType":"semver"},{"version":"7.0.9","status":"affected","lessThan":"7.0.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/drm_gem.c"]}],"references":["https://git.kernel.org/stable/c/318b995cffcfcaa69a234d28123a3f4ae186a9df","https://git.kernel.org/stable/c/38f12d0e10d83b66fa1466400d876a3a8da31542","https://git.kernel.org/stable/c/dc366607c41c45fd0ae6f3db090f31dd611b644a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/52xxx/CVE-2026-52966.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52966","state":"PUBLISHED","datePublished":"2026-06-24T16:28:45.891Z","dateUpdated":"2026-06-24T16:28:45.891Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.374Z"},"containers":{"cna":{"title":"drm: Replace old pointer to new idr","descriptions":[{"lang":"en","value":"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->dmabufs)\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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"672464dd53231509c9c771110798c56d4660e19e","status":"affected","lessThan":"318b995cffcfcaa69a234d28123a3f4ae186a9df","versionType":"git"},{"version":"61bd96d3e5472c253f9c1ab77608f0c8aaa9d025","status":"affected","lessThan":"38f12d0e10d83b66fa1466400d876a3a8da31542","versionType":"git"},{"version":"5e28b7b94408897e41c63477aabc9e1db439bc8c","status":"affected","lessThan":"dc366607c41c45fd0ae6f3db090f31dd611b644a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/drm_gem.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6.18.32","status":"affected","lessThan":"6.18.33","versionType":"semver"},{"version":"7.0.9","status":"affected","lessThan":"7.0.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/drm_gem.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/318b995cffcfcaa69a234d28123a3f4ae186a9df"},{"url":"https://git.kernel.org/stable/c/38f12d0e10d83b66fa1466400d876a3a8da31542"},{"url":"https://git.kernel.org/stable/c/dc366607c41c45fd0ae6f3db090f31dd611b644a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T16:28:45.891Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18.32","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0.9","versionEndExcluding":"7.0.10"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}