CVE-2024-49941

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`.

Reserved 2024-10-21 | Published 2024-10-21 | Updated 2024-12-19 | Assigner Linux

Product status

Default status
unaffected

a86d27693066a34a29be86f394bbad847b2d1749 before 9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbb
affected

a86d27693066a34a29be86f394bbad847b2d1749 before 7b99b5ab885993bff010ebcd93be5e511c56e28a
affected

Default status
affected

6.9
affected

Any version before 6.9
unaffected

6.11.3
unaffected

6.12
unaffected

References

git.kernel.org/...c/9ee4b907d7a5d7a53b4ff7727c371ff3d44ccbbb

git.kernel.org/...c/7b99b5ab885993bff010ebcd93be5e511c56e28a

cve.org (CVE-2024-49941)

nvd.nist.gov (CVE-2024-49941)

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