drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session() The function mod_hdcp_hdcp1_create_session() calls the function get_first_active_display(), but does not check its return value. The return value is a null pointer if the display list is empty. This will lead to a null pointer dereference. Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null. This is similar to the commit c3e9826a2202 ("drm/amd/display: Add null pointer check for get_first_active_display()"). (cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)
- Published
- Sep 5, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 5th percentile
- CWE
- CWE-476
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- linux linux kernel5.16 and later · before 6.1.149
- linux linux kernel6.2 and later · before 6.6.103
- linux linux kernel5.8 and later · before 5.15.190
- linux linux kernel6.13 and later · before 6.16.4
- linux linux kernel6.7 and later · before 6.12.44
- linux linux kernel6.17
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5.8affected
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before 2af45aadb7b5d3852c76e2d1e985289ada6f48bfaffected · git
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before ee0373b20bb67b1f00a1b25ccd24c8ac996b6446affected · git
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before 857b8387a9777e42b36e0400be99b54c251eaf9aaffected · git
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bdaffected · git
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before 2ee86b764c54e0d6a5464fb023b630fdf20869cdaffected · git
- 2deade5ede56581722c0d7672f28b09548dc0fc4 and later · before 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119affected · git
- before 5.8not affected · semver
- 5.15.190 and later · up to and including 5.15.*not affected · semver
- 6.1.149 and later · up to and including 6.1.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.153-1 | 6.1.153-1 |
| Debian:13 | linux | before 6.12.48-1 | 6.12.48-1 |
| Debian:14 | linux | before 6.16.5-1 | 6.16.5-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 2af45aadb7b5d3852c76e2d1e985289ada6f48bf | Vendor (CNA) |
| Linux Linux | 2ee86b764c54e0d6a5464fb023b630fdf20869cd | Vendor (CNA) |
| Linux Linux | 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119 | Vendor (CNA) |
| Linux Linux | 857b8387a9777e42b36e0400be99b54c251eaf9a | Vendor (CNA) |
| Linux Linux | 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd | Vendor (CNA) |
| Linux Linux | ee0373b20bb67b1f00a1b25ccd24c8ac996b6446 | Vendor (CNA) |
| debian:linux | 6.1.153-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/2af45aadb7b5d3852c76e2d1e985289ada6f48bf
- git.kernel.org/stable/c/2ee86b764c54e0d6a5464fb023b630fdf20869cd
- git.kernel.org/stable/c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119
- git.kernel.org/stable/c/857b8387a9777e42b36e0400be99b54c251eaf9a
- git.kernel.org/stable/c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd
- git.kernel.org/stable/c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- cert-portal.siemens.com/productcert/html/ssa-032379.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.