{"cve":"CVE-2026-53313","nvd":{"published":"2026-06-26T20:17:24.613","modified":"2026-10-21T13:19:14.607","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths\n\nIn dc_dmub_srv_log_diagnostic_data() and\ndc_dmub_srv_enable_dpia_trace().\n\nBoth functions check:\n\n  if (!dc_dmub_srv || !dc_dmub_srv->dmub)\n\nand then call DC_LOG_ERROR() inside that block.\n\nDC_LOG_ERROR() uses dc_dmub_srv->ctx internally. So if\ndc_dmub_srv is NULL, the logging itself can dereference a\nNULL pointer and cause a crash.\n\nFix this by splitting the checks.\n\nFirst check if dc_dmub_srv is NULL and return immediately.\nThen check dc_dmub_srv->dmub and log the error only when\ndc_dmub_srv is valid.\n\nFixes the below:\n../display/dc/dc_dmub_srv.c:962 dc_dmub_srv_log_diagnostic_data() error: we previously assumed 'dc_dmub_srv' could be null (see line 961)\n../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_enable_dpia_trace() error: we previously assumed 'dc_dmub_srv' could be null (see line 1166)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/1cad9afbb2d559b738b83c498f9c1abdfd327e7f","https://git.kernel.org/stable/c/2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a","https://git.kernel.org/stable/c/4ae3e16f4b3bf64140f773629b765d605ee079a9","https://git.kernel.org/stable/c/a71fdbd6e8289e2725d33a9873833459f3b1824f","https://git.kernel.org/stable/c/b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-53313","score":0.00114,"percentile":0.01471,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}