drm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98605
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:13 UTC
Updated2026-10-19 10:19:22 UTC
DescriptionIn 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]

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e7447128ca4a250374d6721ee98e3e3cf99551a6 77a43e00c57486a5212ef22d4665cafad62a5d4b git Not specified
CNA Linux Linux affected e7447128ca4a250374d6721ee98e3e3cf99551a6 5759bbef951c39d264ac0f47daa4137d01403aea git Not specified
CNA Linux Linux affected e7447128ca4a250374d6721ee98e3e3cf99551a6 ebffd70e4877bb7554974cf975a27872f2bb225f git Not specified
CNA Linux Linux affected e7447128ca4a250374d6721ee98e3e3cf99551a6 9b796251c3cca45a33a5c859c6818c58aa982277 git Not specified
CNA Linux Linux affected e7447128ca4a250374d6721ee98e3e3cf99551a6 ada667890773e033d2f40dc94176e3beb930b516 git Not specified
CNA Linux Linux affected 6.4 Not specified
CNA Linux Linux unaffected 6.4 semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5759bbef951c39d264ac0f47daa4137d01403aea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/77a43e00c57486a5212ef22d4665cafad62a5d4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9b796251c3cca45a33a5c859c6818c58aa982277 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ada667890773e033d2f40dc94176e3beb930b516 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ebffd70e4877bb7554974cf975a27872f2bb225f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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