CVE-2025-39707: drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities
Vulnerability summary
CVE-2025-39707 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 25 · Related 24Timeline
- 05-09-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities HUBBUB structure is not initialized on DCE hardware, so check if it is NULL to avoid null dereference while accessing amdgpu_dm_capabilities file in debugfs.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.14% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu149 products
- linuxAll versions (No fix recorded) | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 83cfdc2b018cd9c0f927b781d4e07c0d4a911fac | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 98e92fceb9507901e3e8b550e93b843306abd354 | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < b4a69f7f29c8a459ad6b4d8a8b72450f1d9fd288 | 4.15
- linux_kernel≥ 4.15, < 6.12.44 | ≥ 6.13, < 6.16.4
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.48-1 | < 6.16.5-1
3 vendors · 152 products
