{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68193","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-16T13:41:40.253Z","datePublished":"2025-12-16T13:43:19.702Z","dateUpdated":"2026-05-11T21:48:27.778Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:48:27.778Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Add devm release action to safely tear down CT\n\nWhen a buffer object (BO) is allocated with the XE_BO_FLAG_GGTT_INVALIDATE\nflag, the driver initiates TLB invalidation requests via the CTB mechanism\nwhile releasing the BO. However a premature release of the CTB BO can lead\nto system crashes, as observed in:\n\nOops: Oops: 0000 [#1] SMP NOPTI\nRIP: 0010:h2g_write+0x2f3/0x7c0 [xe]\nCall Trace:\n guc_ct_send_locked+0x8b/0x670 [xe]\n xe_guc_ct_send_locked+0x19/0x60 [xe]\n send_tlb_invalidation+0xb4/0x460 [xe]\n xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe]\n ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe]\n ggtt_node_remove+0x110/0x140 [xe]\n xe_ggtt_node_remove+0x40/0xa0 [xe]\n xe_ggtt_remove_bo+0x87/0x250 [xe]\n\nIntroduce a devm-managed release action during xe_guc_ct_init() and\nxe_guc_ct_init_post_hwconfig() to ensure proper CTB disablement before\nresource deallocation, preventing the use-after-free scenario."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_guc.c","drivers/gpu/drm/xe/xe_guc_ct.c","drivers/gpu/drm/xe/xe_guc_ct.h"],"versions":[{"version":"231c4110873a5db4975512c30aa10edcc5be56e2","lessThan":"52faa05fcd9f78af99abebe30a4b7b444744c991","status":"affected","versionType":"git"},{"version":"231c4110873a5db4975512c30aa10edcc5be56e2","lessThan":"ee4b32220a6b41e71512e8804585325e685456ba","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_guc.c","drivers/gpu/drm/xe/xe_guc_ct.c","drivers/gpu/drm/xe/xe_guc_ct.h"],"versions":[{"version":"6.10","status":"affected"},{"version":"0","lessThan":"6.10","status":"unaffected","versionType":"semver"},{"version":"6.17.8","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/52faa05fcd9f78af99abebe30a4b7b444744c991"},{"url":"https://git.kernel.org/stable/c/ee4b32220a6b41e71512e8804585325e685456ba"}],"title":"drm/xe/guc: Add devm release action to safely tear down CT","x_generator":{"engine":"bippy-1.2.0"}}}}