{"id":"CVE-2026-80999","revision":"22122104d35d4d3d99efcebce49467a0","records":[{"revision":"22122104d35d4d3d99efcebce49467a0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80999","aliases":[],"title":"net: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO\n\nrtl83xx_reset_assert() and rtl83xx_reset_deassert() are only called from\nthe probe path, which may sleep and is not timing-critical.  When the\nreset GPIO is provided by a sleeping controller such as an I2C I/O\nexpander, gpiod_set_value() warns:\n\n  WARNING: drivers/gpio/gpiolib.c:4030 at gpiod_set_value+0x44/0x80, CPU#1: kworker/u16:4/61\n  Hardware name: B&O MAP CA33 Rev f (UNKNOWN) (DT)\n  Workqueue: events_unbound deferred_probe_work_func\n  pc : gpiod_set_value+0x44/0x80\n  lr : rtl83xx_probe+0x1d8/0x3a0\n  Call trace:\n   gpiod_set_value+0x44/0x80 (P)\n   rtl83xx_probe+0x1d8/0x3a0\n   realtek_mdio_probe+0x24/0xa0\n   mdio_probe+0x38/0x78\n   really_probe+0xc4/0x3e0\n   __driver_probe_device+0x15c/0x1b8\n   driver_probe_device+0xb4/0x120\n   __device_attach_driver+0xb8/0x1a0\n   bus_for_each_drv+0x88/0xf0\n   __device_attach+0xa0/0x1d8\n   device_initial_probe+0x54/0x68\n   bus_probe_device+0x38/0xa0\n   deferred_probe_work_func+0xb8/0x120\n   process_one_work+0x184/0x4e8\n   worker_thread+0x188/0x308\n   kthread+0x130/0x150\n   ret_from_fork+0x10/0x20\n\nSwitch both helpers to gpiod_set_value_cansleep() so such a reset GPIO can\nbe used without triggering the warning.\n\nThe reset GPIO has been driven with the non-sleeping gpiod_set_value()\nsince the driver was added in v4.19.  The call has since been refactored\nacross several files - from realtek-smi.c / realtek-mdio.c into the common\nrtl83xx.c module and then into the rtl83xx_reset_assert() and\nrtl83xx_reset_deassert() helpers (both in v6.9).  This patch therefore\napplies as-is only to kernels that carry those helpers (v6.9+); older\nstable kernels need the same gpiod_set_value_cansleep() conversion at the\ncorresponding open-coded call sites.","state":0,"publishedAt":"2026-09-11T19:42:53.509+00:00","modifiedAt":"2026-10-19T08:46:23.651+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/dsa/realtek/rtl83xx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d8652956cf37c5caa8c19e0b99ce5ca235c6d5de\",\n                            \"lessThan\": \"c32cf5292a0dd70c4afc138b4dc45743a190cd5a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d8652956cf37c5caa8c19e0b99ce5ca235c6d5de\",\n                            \"lessThan\": \"f71087e7c63aa3e99bf65d7ddf91eb4fd3545778\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d8652956cf37c5caa8c19e0b99ce5ca235c6d5de\",\n                            \"lessThan\": \"1610a8c2b93e815e3dc8643a2a69ab1c37975a6a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d8652956cf37c5caa8c19e0b99ce5ca235c6d5de\",\n                            \"lessThan\": \"fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/dsa/realtek/rtl83xx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/c32cf5292a0dd70c4afc138b4dc45743a190cd5a","https://git.kernel.org/stable/c/f71087e7c63aa3e99bf65d7ddf91eb4fd3545778","https://git.kernel.org/stable/c/1610a8c2b93e815e3dc8643a2a69ab1c37975a6a","https://git.kernel.org/stable/c/fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80999","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80999","identifiers":["CVE-2026-80999"]},"retained":false,"historicalAffected":[]}],"coverage":[]}