Answer in brief
CVE-2026-53135 records a Medium severity (CVSS 5.5) vulnerability in drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs. The current sources do not mark it as known exploited. The current feed maps 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <ee9cfcf77a8e8af637396dc00966df5f701e661c || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <b781f90a9528555c709e59789550893581ef0be4 || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <a2de1d71891a038a9346b2c1a72b88c8350f2479 || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7fc4fab4acc307ad2903312c195872b2953d32c3 || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <7ae95c0275c330b5dbae806f8e431720edad776f || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <bb6f705b73b5f191f14ad004e2c8c4b615806187 || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <c90954cdea4d6998ec345de0d840d030c145b89e || >=c7ba3653e9773256b2b08508a2ed2ca28ea7566b <adf67034b1f61f7119295208085bfd43f85f56af | ee9cfcf77a8e8af637396dc00966df5f701e661c, b781f90a9528555c709e59789550893581ef0be4, a2de1d71891a038a9346b2c1a72b88c8350f2479, 7fc4fab4acc307ad2903312c195872b2953d32c3, 7ae95c0275c330b5dbae806f8e431720edad776f, bb6f705b73b5f191f14ad004e2c8c4b615806187, c90954cdea4d6998ec345de0d840d030c145b89e, adf67034b1f61f7119295208085bfd43f85f56af |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs [Why & How] dp_sdp_message_debugfs_write() dereferences connector->base.state->crtc without checking for NULL. A connector can be connected but not bound to any CRTC (e.g. after hot-plug before the next atomic commit), causing a kernel crash when writing to the sdp_message debugfs node. The function also ignores the user-provided size argument and always passes 36 bytes to copy_from_user(), reading past the user buffer when size < 36. Fix both issues by: - Returning -ENODEV when connector->base.state or state->crtc is NULL - Clamping write_size to min(size, sizeof(data)) (cherry picked from commit 6ab4c36a522842ff70474a1c0af2e40e50fc8300)
Quoted source text, attributed separately from HOL analysis.