CVE-2026-97449: ACPICA: Add package limit checks in parser functions

CVE-2026-97449: ACPICA: Add package limit checks in parser functions

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

Description
===========

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

ACPICA: Add package limit checks in parser functions

Add package limit checks in parser functions to prevent out-of-bounds
access.

The Linux kernel CVE team has assigned CVE-2026-97449 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.12.111 with commit 250800658bf3db32e7accc615b0a134c30fba203
	Fixed in 6.18.53 with commit 1cac04312b77fb81209da13bf5e0b83962568fcb
	Fixed in 7.2 with commit d27d48a528e437aed690f977e69a6fe73fe82ab5

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2026-97449
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/acpi/acpica/nsxfname.c
	drivers/acpi/acpica/psargs.c
	drivers/acpi/acpica/psloop.c
	drivers/acpi/acpica/psparse.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/250800658bf3db32e7accc615b0a134c30fba203
	https://git.kernel.org/stable/c/1cac04312b77fb81209da13bf5e0b83962568fcb
	https://git.kernel.org/stable/c/d27d48a528e437aed690f977e69a6fe73fe82ab5