CVE-2026-98605

Description

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach When the Exynos DSI driver was generalized into samsung-dsim, the TE GPIO acquisition was switched from gpiod_get_optional() to devm_gpiod_get_optional() while keeping the matching gpiod_put() calls. That combination is wrong for a managed descriptor. However, dropping the puts and keeping the managed get is also wrong: samsung_dsim_register_te_irq() runs from the DSI host attach callback, and host detach/reattach can happen without destroying the device that owns the managed action. A second attach would then request the GPIO again without having released it. Switch back to a non-managed gpiod_get_optional() and keep the explicit gpiod_put() on the request_irq() error path and in samsung_dsim_unregister_te_irq(). [Luca: remove unnecessary comment]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://git.kernel.org/stable/c/77a43e00c57486a5212ef22d4665cafad62a5d4b ↗
• https://git.kernel.org/stable/c/5759bbef951c39d264ac0f47daa4137d01403aea ↗
• https://git.kernel.org/stable/c/ebffd70e4877bb7554974cf975a27872f2bb225f ↗
• https://git.kernel.org/stable/c/9b796251c3cca45a33a5c859c6818c58aa982277 ↗
• https://git.kernel.org/stable/c/ada667890773e033d2f40dc94176e3beb930b516 ↗