CVE-2023-53389
drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached The MediaTek DisplayPort interface bridge driver starts its interrupts as soon as its probed. However when the interrupts trigger the bridge might not have been attached to a DRM device. As drm_helper_hpd_irq_event() does not check whether the passed in drm_device is valid or not, a NULL pointer passed in results in a kernel NULL pointer dereference in it. Check whether the bridge is attached and only trigger an HPD event if it is.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 96% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b – < 6524d3d58797975cc40b85be1e9b89721b4e8d0b
- affected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b – < 3551789d0635dfb2df8ab8e7fdbf0647e9c1724c
- affected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b – < d1c04e338016ae2517c641806a831b1f3eee2bed
- affected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b – < 36b617f7e4ae663fcadd202ea061ca695ca75539
- affected 6.1
- unaffected < 6.1
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (4)
- https://git.kernel.org/stable/c/6524d3d58797975cc40b85be1e9b89721b4e8d0b (opens in a new tab)
- https://git.kernel.org/stable/c/3551789d0635dfb2df8ab8e7fdbf0647e9c1724c (opens in a new tab)
- https://git.kernel.org/stable/c/d1c04e338016ae2517c641806a831b1f3eee2bed (opens in a new tab)
- https://git.kernel.org/stable/c/36b617f7e4ae663fcadd202ea061ca695ca75539 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53389)Record last updated .