{"id":"CVE-2026-68238","title":"drm/amdgpu: Release VFCT ACPI table reference","summary":"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 refe…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 1748043b5114ce5ee5ee874d5f821a158d70631c","Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 50a75929c0c5e8ab29a3ac49dc92489873d9d261","Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 312278b3091912fa56a6a587609f17dcb33465c2","Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8","Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 65bff26617607c1331283232016c0e89088c5b78","Linux 4.2"],"published":"2026-08-10","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:43:35.374Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68238","references":[{"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"}],"tags":["cve.org"],"epss":0.00166,"epssPercentile":0.05498,"ingestedAt":"2026-10-21T12:48:53.603Z","slug":"CVE-2026-68238","body":"## Overview\n\nIn 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)\n\n## Affected\n\n- `Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 1748043b5114ce5ee5ee874d5f821a158d70631c`\n- `Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 50a75929c0c5e8ab29a3ac49dc92489873d9d261`\n- `Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 312278b3091912fa56a6a587609f17dcb33465c2`\n- `Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 9b7de3ee5d2c5ee2a706e5f7ca0126f4fbea4da8`\n- `Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 65bff26617607c1331283232016c0e89088c5b78`\n- `Linux 4.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}