{"id":"CVE-2026-98605","title":"drm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach\n\nWhen the Exynos DSI driver was generalized into samsung-dsim, the TE\nGPIO acquisition was switched from …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 77a43e00c57486a5212ef22d4665cafad62a5d4b","Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 5759bbef951c39d264ac0f47daa4137d01403aea","Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < ebffd70e4877bb7554974cf975a27872f2bb225f","Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 9b796251c3cca45a33a5c859c6818c58aa982277","Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < ada667890773e033d2f40dc94176e3beb930b516","Linux 6.4"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:19:18.294Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98605","references":[{"url":"https://git.kernel.org/stable/c/77a43e00c57486a5212ef22d4665cafad62a5d4b"},{"url":"https://git.kernel.org/stable/c/5759bbef951c39d264ac0f47daa4137d01403aea"},{"url":"https://git.kernel.org/stable/c/ebffd70e4877bb7554974cf975a27872f2bb225f"},{"url":"https://git.kernel.org/stable/c/9b796251c3cca45a33a5c859c6818c58aa982277"},{"url":"https://git.kernel.org/stable/c/ada667890773e033d2f40dc94176e3beb930b516"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.244Z","slug":"CVE-2026-98605","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach\n\nWhen the Exynos DSI driver was generalized into samsung-dsim, the TE\nGPIO acquisition was switched from gpiod_get_optional() to\ndevm_gpiod_get_optional() while keeping the matching gpiod_put() calls.\nThat combination is wrong for a managed descriptor.\n\nHowever, dropping the puts and keeping the managed get is also wrong:\nsamsung_dsim_register_te_irq() runs from the DSI host attach callback,\nand host detach/reattach can happen without destroying the device that\nowns the managed action. A second attach would then request the GPIO\nagain without having released it.\n\nSwitch back to a non-managed gpiod_get_optional() and keep the explicit\ngpiod_put() on the request_irq() error path and in\nsamsung_dsim_unregister_te_irq().\n\n[Luca: remove unnecessary comment]\n\n## Affected\n\n- `Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 77a43e00c57486a5212ef22d4665cafad62a5d4b`\n- `Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 5759bbef951c39d264ac0f47daa4137d01403aea`\n- `Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < ebffd70e4877bb7554974cf975a27872f2bb225f`\n- `Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < 9b796251c3cca45a33a5c859c6818c58aa982277`\n- `Linux >= e7447128ca4a250374d6721ee98e3e3cf99551a6 < ada667890773e033d2f40dc94176e3beb930b516`\n- `Linux 6.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}