CVE-2023-53788

Summary

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

ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set()

tuning_ctl_set() might have buffer overrun at (X) if it didn't break from loop by matching (A).

static int tuning_ctl_set(...)
{
	for (i = 0; i < TUNING_CTLS_COUNT; i++)

(A) if (nid == ca0132_tuning_ctls[i].nid) break;

	snd_hda_power_up(...);

(X) dspio_set_param(…, ca0132_tuning_ctls[i].mid, …); snd_hda_power_down(…); ^

	return 1;
}

We will get below error by cppcheck

sound/pci/hda/patch_ca0132.c:4229:2: note: After for loop, i has value 12
 for (i = 0; i < TUNING_CTLS_COUNT; i++)
 ^
sound/pci/hda/patch_ca0132.c:4234:43: note: Array index out of bounds
 dspio_set_param(codec, ca0132_tuning_ctls[i].mid, 0x20,
                                           ^

This patch cares non match case.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/ff5e8b49348f6a550c136b74efaf8b3c1d3ceaea
• https://git.kernel.org/stable/c/3590498117a11aa1f92a97e8a04d95320e347ebd
• https://git.kernel.org/stable/c/7f12f99b8017ad5ed5aff4b0aefe3bb7bbdf8a99
• https://git.kernel.org/stable/c/baef27176ea5fdc7ad0947e2dc7733855e35db71
• https://git.kernel.org/stable/c/d23f65f08247068576a01e28b297e995b7dc3965
• https://git.kernel.org/stable/c/32854bc91ae7debcdefdc7ae881ed83385a04792
• https://git.kernel.org/stable/c/734a3deb6614e3597e7e9ef7fb6006c593c5ee18
• https://git.kernel.org/stable/c/98e5eb110095ec77cb6d775051d181edbf9cd3cf

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