{"id":"CVE-2026-80999","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80999","generatedAt":"2026-10-28T03:42:06.986Z","title":"In the Linux kernel, the following vulnerability has been resolved: net: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO rtl83xx_reset_assert() and rtl83xx_reset_deassert() are only called from the probe path, which may sleep and is not…","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.","published":"2026-09-11T20:19:07.000Z","lastModified":"2026-10-19T09:17:33.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00206,"percentile":0.10477,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/1610a8c2b93e815e3dc8643a2a69ab1c37975a6a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c32cf5292a0dd70c4afc138b4dc45743a190cd5a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f71087e7c63aa3e99bf65d7ddf91eb4fd3545778","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80999","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}