CVE-2024-36890

Summary

In the Linux kernel, the following vulnerability has been resolved:

mm/slab: make __free(kfree) accept error pointers

Currently, if an automatically freed allocation is an error pointer that will lead to a crash. An example of this is in wm831x_gpio_dbg_show().

171 char *label __free(kfree) = gpiochip_dup_line_label(chip, i); 172 if (IS_ERR(label)) { 173 dev_err(wm831x->dev, "Failed to duplicate label\n"); 174 continue; 175 }

The auto clean up function should check for error pointers as well, otherwise we're going to keep hitting issues like this.

Affected Software

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

CVE Program Container

Additional References

• https://git.kernel.org/stable/c/9f6eb0ab4f95240589ee85fd9886a944cd3645b2
• https://git.kernel.org/stable/c/ac6cf3ce9b7d12acb7b528248df5f87caa25fcdc
• https://git.kernel.org/stable/c/79cbe0be6c0317b215ddd8bd3e32f0afdac48543
• https://git.kernel.org/stable/c/cd7eb8f83fcf258f71e293f7fc52a70be8ed0128

References

• https://git.kernel.org/stable/c/edca32f87329d6e341d2143a3b58ec254e8f6b88
• https://git.kernel.org/stable/c/946771c2a2b1150f9b7286feadc3aa1e15a1eb16
• https://git.kernel.org/stable/c/9f6eb0ab4f95240589ee85fd9886a944cd3645b2
• https://git.kernel.org/stable/c/ac6cf3ce9b7d12acb7b528248df5f87caa25fcdc
• https://git.kernel.org/stable/c/79cbe0be6c0317b215ddd8bd3e32f0afdac48543
• https://git.kernel.org/stable/c/cd7eb8f83fcf258f71e293f7fc52a70be8ed0128

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