CVE-2026-64084

In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus/adm1266) cap PDIO scan in get_multiple at ADM1266_PDIO_NR adm1266_gpio_get_multiple() iterates the PDIO portion of the caller-supplied mask using for_each_set_bit_from(gpio_nr, mask, ADM1266_GPIO_NR + ADM1266_PDIO_STATUS) { ... } where ADM1266_PDIO_STATUS is the PMBus command code (0xE9, i.e. 233), not the number of PDIO pins. The intended upper bound is ADM1266_GPIO_NR + ADM1266_PDIO_NR = 25. gpiolib hands in a mask sized for gc.ngpio (= 25 bits on this chip), so the iteration walks find_next_bit() up to 242, reading up to 217 extra bits (a handful of unsigned-long words: four on 64-bit, seven on 32-bit) of whatever lives past the end of the mask in the caller's stack. Any incidental set bit in that range then drives a set_bit(gpio_nr, bits) call that writes past the end of the caller-supplied bits array too -- both out-of-bounds. Substitute ADM1266_PDIO_NR for the constant so the scan stops at the last real PDIO bit.

• CWE-787

• https://git.kernel.org/stable/c/17cee2f59029039416e8f6303050038eb59ba149Patch
• https://git.kernel.org/stable/c/299efd14c2eda7e5fd40025e54addd4151a01081Patch
• https://git.kernel.org/stable/c/2aef8f08c479f4cbc83e1e6b19d1c94d4dd24f17Patch
• https://git.kernel.org/stable/c/4d1da9a6be5a8156c532d571c2ed237169f99244Patch
• https://git.kernel.org/stable/c/b96c7f0bc0713dc6403912f6527d4ff9168d6fe6Patch
• https://git.kernel.org/stable/c/d0593e15fdeb56048a72c5c6e720f702759d0ccdPatch
• https://git.kernel.org/stable/c/d7834d92251baade796812876e95555e2066fa9fPatch
• https://git.kernel.org/stable/c/fa7ca363069a70b0d1aa51e8892e3095fe2ac1ecPatch

Published

Jul 19, 2026

Last Modified

Sep 3, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-64079In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-6408Tanium addressed an information disclosure vulnerability in …2.7
• CVE-2026-64080In the Linux kernel, the following vulnerability has been re…9.3
• CVE-2026-64081In the Linux kernel, the following vulnerability has been re…8.4
• CVE-2026-64082In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-64083In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-64085In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-64086In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-64087In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-64088In the Linux kernel, the following vulnerability has been re…8.8
• CVE-2026-64089In the Linux kernel, the following vulnerability has been re…9.8
• CVE-2026-6409A Denial of Service (DoS) vulnerability exists in the Protob…7.1