CVE-2026-53135In 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 connect…
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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)
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.2 before 5.10.259; from 5.11 before 5.15.210; from 5.16 before 6.1.176; from 6.2 before 6.6.143; from 6.7 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/7ae95c0275c330b5dbae806f8e431720edad776fpatch
- https://git.kernel.org/stable/c/7fc4fab4acc307ad2903312c195872b2953d32c3patch
- https://git.kernel.org/stable/c/a2de1d71891a038a9346b2c1a72b88c8350f2479patch
- https://git.kernel.org/stable/c/adf67034b1f61f7119295208085bfd43f85f56afpatch
- https://git.kernel.org/stable/c/b781f90a9528555c709e59789550893581ef0be4patch
- https://git.kernel.org/stable/c/bb6f705b73b5f191f14ad004e2c8c4b615806187patch
- https://git.kernel.org/stable/c/c90954cdea4d6998ec345de0d840d030c145b89epatch
- https://git.kernel.org/stable/c/ee9cfcf77a8e8af637396dc00966df5f701e661cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.