CVE-2026-53135
Linux kernel: null pointer dereference can lead to denial of service
- Risk score
- 48/100
- CVSS
- 5.5 v3.1
- Exploit chance (30 days)
- 0.1%
- Published
- 25 Jun 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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-p…
- Affected
- Linux kernel
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Linux kernel: Amber, patch this week. In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: restore network header before routing and forwarding ipv6_srh_rcv() runs with skb->data at the Segment Routing Header (SRH) while skb_network_header() points at the IPv6 header. When segments_left > 0, ipv6_srh_rcv() previously restored the …
The flaws
- CVE-2026-53135: Null pointer dereference can lead to denial of service (CVSS 5.5 · EPSS 0%)
- CVE-2026-98096: Out-of-bounds write (CVSS 7.4 · EPSS 1%)
- CVE-2026-98115: Race condition (CVSS 8.8 · EPSS 0%)
- CVE-2026-98117: Use-after-free (CVSS 7.8 · EPSS 0%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Linux kernel
Where it stands
- No known exploitation
How it unfolded
- 6 Nov, Ubuntu security notices (official): USN-9002-1: Linux kernel (NVIDIA Tegra) vulnerabilities
Connects to
- Same weakness: Null pointer dereference (CWE-476). 148 other warnings in 30 days
- Same product: Earlier Linux kernel warnings. 168 in the last 90 days
Why it is Yellow
- CVSS 5.5 medium
- On your watchlist: linux kernel
- Named in a government or vendor bulletin
Government and vendor bulletins
References
- https://ubuntu.com/security/notices/USN-9002-1
- https://git.kernel.org/stable/c/7ae95c0275c330b5dbae806f8e431720edad776f
- https://git.kernel.org/stable/c/7fc4fab4acc307ad2903312c195872b2953d32c3
- https://git.kernel.org/stable/c/a2de1d71891a038a9346b2c1a72b88c8350f2479
- https://git.kernel.org/stable/c/adf67034b1f61f7119295208085bfd43f85f56af
- https://git.kernel.org/stable/c/b781f90a9528555c709e59789550893581ef0be4
- https://git.kernel.org/stable/c/bb6f705b73b5f191f14ad004e2c8c4b615806187
- https://git.kernel.org/stable/c/c90954cdea4d6998ec345de0d840d030c145b89e
- https://git.kernel.org/stable/c/ee9cfcf77a8e8af637396dc00966df5f701e661c
Original description
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)
Last activity 6 Nov 2026. Patch Forecast updates every hour.