{"id":"CVE-2026-23421","state":"PUBLISHED","title":"drm/xe/configfs: Free ctx_restore_mid_bb in release","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/configfs: Free ctx_restore_mid_bb in release\n\nctx_restore_mid_bb memory is allocated in wa_bb_store(), but\nxe_config_device_release() only frees ctx_restore_post_bb.\n\nFree ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation\nwhen the configfs device is removed.\n\n(cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)","publishedAt":"2026-04-03T13:24:30.548Z","updatedAt":"2026-05-11T22:06:34.919Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"7f971dfd48983074adc7bbcea3ee95ce7aad47cb","versionType":"git"},{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"3557359ea3df32430ea7c30f7a708ca9a91d7e0e","versionType":"git"},{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"e377182f0266f46f02d01838e6bde67b9dac0d66","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_configfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_configfs.c"]}],"references":["https://git.kernel.org/stable/c/7f971dfd48983074adc7bbcea3ee95ce7aad47cb","https://git.kernel.org/stable/c/3557359ea3df32430ea7c30f7a708ca9a91d7e0e","https://git.kernel.org/stable/c/e377182f0266f46f02d01838e6bde67b9dac0d66"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23421.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23421","state":"PUBLISHED","datePublished":"2026-04-03T13:24:30.548Z","dateUpdated":"2026-05-11T22:06:34.919Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:46.015Z"},"containers":{"cna":{"title":"drm/xe/configfs: Free ctx_restore_mid_bb in release","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/configfs: Free ctx_restore_mid_bb in release\n\nctx_restore_mid_bb memory is allocated in wa_bb_store(), but\nxe_config_device_release() only frees ctx_restore_post_bb.\n\nFree ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation\nwhen the configfs device is removed.\n\n(cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"7f971dfd48983074adc7bbcea3ee95ce7aad47cb","versionType":"git"},{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"3557359ea3df32430ea7c30f7a708ca9a91d7e0e","versionType":"git"},{"version":"b30d5de3d40c3fa642079bac0d91f17091c5f877","status":"affected","lessThan":"e377182f0266f46f02d01838e6bde67b9dac0d66","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_configfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_configfs.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7f971dfd48983074adc7bbcea3ee95ce7aad47cb"},{"url":"https://git.kernel.org/stable/c/3557359ea3df32430ea7c30f7a708ca9a91d7e0e"},{"url":"https://git.kernel.org/stable/c/e377182f0266f46f02d01838e6bde67b9dac0d66"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:06:34.919Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}