{"id":"CVE-2026-68238","state":"PUBLISHED","title":"drm/amdgpu: Release VFCT ACPI table reference","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Release VFCT ACPI table reference\n\namdgpu_acpi_vfct_bios() fetches the VFCT table with acpi_get_table()\nbut never releases it. acpi_get_table() takes a reference on the\ntable (incrementing its validation_count and mapping it on the 0->1\ntransition); without a paired acpi_put_table() the mapping is leaked\non every call, whether or not a matching VBIOS image is found.\n\nRoute all exit paths after the table is acquired through a common\nacpi_put_table(). The VBIOS image is copied out with kmemdup() before\nthe table is released, so it remains valid for the caller.\n\n(cherry picked from commit ca5988682b4cba4cd125a0fa99b2de1239164ae4)","publishedAt":"2026-08-10T12:01:03.277Z","updatedAt":"2026-10-30T12:28:10.657Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"1c19e02a689661a9687d689dcc5995d3be538262","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"1748043b5114ce5ee5ee874d5f821a158d70631c","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"50a75929c0c5e8ab29a3ac49dc92489873d9d261","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"312278b3091912fa56a6a587609f17dcb33465c2","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"65bff26617607c1331283232016c0e89088c5b78","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/amd/amdgpu/amdgpu_bios.c"]}],"references":["https://git.kernel.org/stable/c/1c19e02a689661a9687d689dcc5995d3be538262","https://git.kernel.org/stable/c/1748043b5114ce5ee5ee874d5f821a158d70631c","https://git.kernel.org/stable/c/50a75929c0c5e8ab29a3ac49dc92489873d9d261","https://git.kernel.org/stable/c/312278b3091912fa56a6a587609f17dcb33465c2","https://git.kernel.org/stable/c/9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8","https://git.kernel.org/stable/c/65bff26617607c1331283232016c0e89088c5b78"],"weaknesses":[],"ingestedAt":"2026-10-30T12:46:06.359Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68238.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68238","state":"PUBLISHED","datePublished":"2026-08-10T12:01:03.277Z","dateUpdated":"2026-10-30T12:28:10.657Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.376Z"},"containers":{"cna":{"title":"drm/amdgpu: Release VFCT ACPI table reference","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Release VFCT ACPI table reference\n\namdgpu_acpi_vfct_bios() fetches the VFCT table with acpi_get_table()\nbut never releases it. acpi_get_table() takes a reference on the\ntable (incrementing its validation_count and mapping it on the 0->1\ntransition); without a paired acpi_put_table() the mapping is leaked\non every call, whether or not a matching VBIOS image is found.\n\nRoute all exit paths after the table is acquired through a common\nacpi_put_table(). The VBIOS image is copied out with kmemdup() before\nthe table is released, so it remains valid for the caller.\n\n(cherry picked from commit ca5988682b4cba4cd125a0fa99b2de1239164ae4)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"1c19e02a689661a9687d689dcc5995d3be538262","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"1748043b5114ce5ee5ee874d5f821a158d70631c","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"50a75929c0c5e8ab29a3ac49dc92489873d9d261","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"312278b3091912fa56a6a587609f17dcb33465c2","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8","versionType":"git"},{"version":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21","status":"affected","lessThan":"65bff26617607c1331283232016c0e89088c5b78","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/amd/amdgpu/amdgpu_bios.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/1c19e02a689661a9687d689dcc5995d3be538262"},{"url":"https://git.kernel.org/stable/c/1748043b5114ce5ee5ee874d5f821a158d70631c"},{"url":"https://git.kernel.org/stable/c/50a75929c0c5e8ab29a3ac49dc92489873d9d261"},{"url":"https://git.kernel.org/stable/c/312278b3091912fa56a6a587609f17dcb33465c2"},{"url":"https://git.kernel.org/stable/c/9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8"},{"url":"https://git.kernel.org/stable/c/65bff26617607c1331283232016c0e89088c5b78"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:28:10.657Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}