{"id":"CVE-2025-39705","title":"drm/amd/display: fix a Null pointer dereference vulnerability","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix a Null pointer dereference vulnerability\n\n[Why]\nA null pointer dereference vulnerability exists in the AMD display driver's\n(DC module) cleanup fun…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 0d9f4f202de1522aadc7a827aba0ae92b3d70937","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 0961673cc5f0055957aa46f25eb4ef6c07e00165","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 4ade995b9b25b3c6e8dc42c27070340f1358d8c8","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 1bcf63a44381691d6192872801f830ce3250e367","Linux 4.15"],"published":"2025-09-05","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:37:16.991Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39705","references":[{"url":"https://git.kernel.org/stable/c/0d9f4f202de1522aadc7a827aba0ae92b3d70937"},{"url":"https://git.kernel.org/stable/c/0961673cc5f0055957aa46f25eb4ef6c07e00165"},{"url":"https://git.kernel.org/stable/c/4ade995b9b25b3c6e8dc42c27070340f1358d8c8"},{"url":"https://git.kernel.org/stable/c/1bcf63a44381691d6192872801f830ce3250e367"}],"tags":["cve.org"],"epss":0.00196,"epssPercentile":0.09181,"ingestedAt":"2026-10-21T12:48:53.700Z","slug":"CVE-2025-39705","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: fix a Null pointer dereference vulnerability\n\n[Why]\nA null pointer dereference vulnerability exists in the AMD display driver's\n(DC module) cleanup function dc_destruct().\nWhen display control context (dc->ctx) construction fails\n(due to memory allocation failure), this pointer remains NULL.\nDuring subsequent error handling when dc_destruct() is called,\nthere's no NULL check before dereferencing the perf_trace member\n(dc->ctx->perf_trace), causing a kernel null pointer dereference crash.\n\n[How]\nCheck if dc->ctx is non-NULL before dereferencing.\n\n(Updated commit text and removed unnecessary error message)\n(cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)\n\n## Affected\n\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 0d9f4f202de1522aadc7a827aba0ae92b3d70937`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 0961673cc5f0055957aa46f25eb4ef6c07e00165`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 4ade995b9b25b3c6e8dc42c27070340f1358d8c8`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 1bcf63a44381691d6192872801f830ce3250e367`\n- `Linux 4.15`\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":[]}