Answer in brief
CVE-2026-53313 records a Medium severity (CVSS 5.5) vulnerability in drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2631ac1ac328189031d1aefbbd4929050f72fb23 <a71fdbd6e8289e2725d33a9873833459f3b1824f || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22 || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <4ae3e16f4b3bf64140f773629b765d605ee079a9 | a71fdbd6e8289e2725d33a9873833459f3b1824f, 2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a, b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22, 4ae3e16f4b3bf64140f773629b765d605ee079a9 |
| Linux/Linuxgeneric | 5.14 | Not reported |
| Linux/Linuxgeneric | >=2631ac1ac328189031d1aefbbd4929050f72fb23 <1cad9afbb2d559b738b83c498f9c1abdfd327e7f || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <a71fdbd6e8289e2725d33a9873833459f3b1824f || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22 || >=2631ac1ac328189031d1aefbbd4929050f72fb23 <4ae3e16f4b3bf64140f773629b765d605ee079a9 | 1cad9afbb2d559b738b83c498f9c1abdfd327e7f, a71fdbd6e8289e2725d33a9873833459f3b1824f, 2ab18de5ebb11c76bfc8087c5a09fbcccd0dea8a, b37a978e6d8c33fbfa4abc5dcca4c7cfc6d01f22, 4ae3e16f4b3bf64140f773629b765d605ee079a9 |
Published upstream
Jun 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid NULL dereference in dc_dmub_srv error paths In dc_dmub_srv_log_diagnostic_data() and dc_dmub_srv_enable_dpia_trace(). Both functions check: if (!dc_dmub_srv || !dc_dmub_srv->dmub) and then call DC_LOG_ERROR() inside that block. DC_LOG_ERROR() uses dc_dmub_srv->ctx internally. So if dc_dmub_srv is NULL, the logging itself can dereference a NULL pointer and cause a crash. Fix this by splitting the checks. First check if dc_dmub_srv is NULL and return immediately. Then check dc_dmub_srv->dmub and log the error only when dc_dmub_srv is valid. Fixes the below: ../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) ../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)
Quoted source text, attributed separately from HOL analysis.