{"cve":"CVE-2026-22986","nvd":{"published":"2026-01-23T16:15:54.657","modified":"2026-06-17T10:20:39.370","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpiolib: fix race condition for gdev->srcu\n\nIf two drivers were calling gpiochip_add_data_with_key(), one may be\ntraversing the srcu-protected list in gpio_name_to_desc(), meanwhile\nother has just added its gdev in gpiodev_add_to_list_unlocked().\nThis creates a non-mutexed and non-protected timeframe, when one\ninstance is dereferencing and using &gdev->srcu, before the other\nhas initialized it, resulting in crash:\n\n[    4.935481] Unable to handle kernel paging request at virtual address ffff800272bcc000\n[    4.943396] Mem abort info:\n[    4.943400]   ESR = 0x0000000096000005\n[    4.943403]   EC = 0x25: DABT (current EL), IL = 32 bits\n[    4.943407]   SET = 0, FnV = 0\n[    4.943410]   EA = 0, S1PTW = 0\n[    4.943413]   FSC = 0x05: level 1 translation fault\n[    4.943416] Data abort info:\n[    4.943418]   ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000\n[    4.946220]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[    4.955261]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[    4.955268] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000038e6c000\n[    4.961449] [ffff800272bcc000] pgd=0000000000000000\n[    4.969203] , p4d=1000000039739003\n[    4.979730] , pud=0000000000000000\n[    4.980210] phandle (CPU): 0x0000005e, phandle (BE): 0x5e000000 for node \"reset\"\n[    4.991736] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP\n...\n[    5.121359] pc : __srcu_read_lock+0x44/0x98\n[    5.131091] lr : gpio_name_to_desc+0x60/0x1a0\n[    5.153671] sp : ffff8000833bb430\n[    5.298440]\n[    5.298443] Call trace:\n[    5.298445]  __srcu_read_lock+0x44/0x98\n[    5.309484]  gpio_name_to_desc+0x60/0x1a0\n[    5.320692]  gpiochip_add_data_with_key+0x488/0xf00\n    5.946419] ---[ end trace 0000000000000000 ]---\n\nMove initialization code for gdev fields before it is added to\ngpio_devices, with adjacent initialization code.\nAdjust goto statements  to reflect modified order of operations\n\n[Bartosz: fixed a build issue, removed stray newline]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":4.7},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/1ef731547dfd73f466c5d0e52801b97191d4647f","https://git.kernel.org/stable/c/a7ac22d53d0990152b108c3f4fe30df45fcb0181","https://git.kernel.org/stable/c/fb674c8f1a5d8dd3113a7326030f963fa2d79c02"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-22986","score":0.001,"percentile":0.00822,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}