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CVE-2023-53784

drm: bridge: dw_hdmi: fix connector access for scdc

In the Linux kernel, the following vulnerability has been resolved:

drm: bridge: dw_hdmi: fix connector access for scdc

Commit 5d844091f237 ("drm/scdc-helper: Pimp SCDC debugs") changed the scdc
interface to pick up an i2c adapter from a connector instead. However, in
the case of dw-hdmi, the wrong connector was being used to pass i2c adapter
information, since dw-hdmi's embedded connector structure is only populated
when the bridge attachment callback explicitly asks for it.

drm-meson is handling connector creation, so this won't happen, leading to
a NULL pointer dereference.

Fix it by having scdc functions access dw-hdmi's current connector pointer
instead, which is assigned during the bridge enablement stage.

[narmstrong: moved Fixes tag before first S-o-b and added Reported-by tag]
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 5d844091f2370f01752c3129b147861b9dcd3d98
Version < 552f79aa9e801ed4f74d6b3221af78042ba4f235
Status affected
Version 5d844091f2370f01752c3129b147861b9dcd3d98
Version < 98703e4e061fb8715c7613cd227e32cdfd136b23
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.4
Status affected
Version 0
Version < 6.4
Status unaffected
Version <= 6.4.*
Version 6.4.5
Status unaffected
Version <= *
Version 6.5
Status unaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.075
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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