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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-49941

gpiolib: Fix potential NULL pointer dereference in gpiod_get_label()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix potential NULL pointer dereference in gpiod_get_label() In `gpiod_get_label()`, it is possible that `srcu_dereference_check()` may return a NULL pointer, leading to a scenario where `label->str` is accessed without verifying if `label` itself is NULL. This patch adds a proper NULL check for `label` before accessing `label->str`. The check for `label->str != NULL` is removed because `label->str` can never be NULL if `label` is not NULL. This fixes the issue where the label name was being printed as `(efault)` when dumping the sysfs GPIO file when `label == NULL`.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • a86d27693066a34a29be86f394bbad847b2d1749 to < 9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbbaffected
  • a86d27693066a34a29be86f394bbad847b2d1749 to < 7b99b5ab885993bff010ebcd93be5e511c56e28aaffected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 6.11.3 to ≤ 6.11.*unaffected
  • 6.12 to ≤ *unaffected

References