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Permalink CVE-2026-64084
7.8 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
created 6 days, 2 hours ago Activity log
  • Created & dismissed (max. allowed matches exceeded) suggestion
hwmon: (pmbus/adm1266) cap PDIO scan in get_multiple at ADM1266_PDIO_NR

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.

Affected products

Linux
  • <2aef8f08c479f4cbc83e1e6b19d1c94d4dd24f17
  • <b96c7f0bc0713dc6403912f6527d4ff9168d6fe6
  • =<6.18.*
  • =<7.0.*
  • =<6.12.*
  • <d0593e15fdeb56048a72c5c6e720f702759d0ccd
  • <4d1da9a6be5a8156c532d571c2ed237169f99244
  • <d7834d92251baade796812876e95555e2066fa9f
  • =<6.1.*
  • <5.10
  • =<6.6.*
  • =<*
  • =<5.15.*
  • <fa7ca363069a70b0d1aa51e8892e3095fe2ac1ec
  • ==5.10
  • <17cee2f59029039416e8f6303050038eb59ba149
  • =<5.10.*
  • <299efd14c2eda7e5fd40025e54addd4151a01081