CVE-2025-39934: drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ
Vulnerability summary
CVE-2025-39934 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 4% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 43 · Related 39Timeline
- 04-10-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ If the interrupt occurs before resource initialization is complete, the interrupt handler/worker may access uninitialized data such as the I2C tcpc_client device, potentially leading to NULL pointer dereference.
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 0.15% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu136 products
- linux< 5.15.0-170.180 | < 6.8.0-106.106
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1100.107 | < 6.8.0-1050.53
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < 51a501e990a353a4f15da6bab295b28e5d118f64 | ≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < f9a089d0a6d537d0f2061c8a37a7de535ce0310e | ≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < 15a77e1ab0a994d69b471c76b8d01117128dda26 | ≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < 0da73f7827691a5e2265b110d5fe12f29535ec92 | ≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < 1a7ea294d57fb61485d11b3f2241d631d73025cb | ≥ 8bdfc5dae4e3ba4d99dfb430ef43249e5f1b7730, < a10f910c77f280327b481e77eab909934ec508f0 | 5.11
- linux_kernel≥ 5.11, < 5.15.194 | ≥ 5.16, < 6.1.154 | ≥ 6.2, < 6.6.108 | ≥ 6.7, < 6.12.49 | ≥ 6.13, < 6.16.9 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4 | 6.17:rc5 | 6.17:rc6
Debian1 product
- linux< 6.1.158-1 | < 6.12.57-1 | < 6.16.9-1
3 vendors · 139 products