CVE-2022-50411

ACPICA: Fix error code path in acpi_ds_call_control_method()

State: Published
Severity: 7.8 High
Published: Sep 18, 2025
Updated: Aug 5, 2026
Reserved: Sep 17, 2025

Description

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

ACPICA: Fix error code path in acpi_ds_call_control_method()

A use-after-free in acpi_ps_parse_aml() after a failing invocaion of acpi_ds_call_control_method() is reported by KASAN [1] and code inspection reveals that next_walk_state pushed to the thread by acpi_ds_create_walk_state() is freed on errors, but it is not popped from the thread beforehand. Thus acpi_ds_get_current_walk_state() called by acpi_ps_parse_aml() subsequently returns it as the new walk state which is incorrect.

To address this, make acpi_ds_call_control_method() call acpi_ds_pop_walk_state() to pop next_walk_state from the thread before returning an error.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 38e251d356a01b61a86cb35213cafd7e8fe7090cAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before f520d181477ec29a496c0b3bbfbdb7e2606c2713Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2deb42c4f9776e59bee247c14af9c5e8c05ca9a6Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9ef353c92f9d04c88de3af1a46859c1fb76db0f8Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b0b83d3f3ffa96e8395c56b83d6197e184902a34Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5777432ebaaf797e24f059979b42df3139967163Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0462fec709d51762ba486245bc344f44cc6cfa97Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 799881db3e03b5e98fe6a900d9d7de8c7d61e7eeAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 404ec60438add1afadaffaed34bb5fe4ddcadd40Affected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 4.9.337 through 4.9.Not affected 4.14.303 through 4.14.Not affected 4.19.270 through 4.19.Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 38e251d356a01b61a86cb35213cafd7e8fe7090cAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before f520d181477ec29a496c0b3bbfbdb7e2606c2713Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 2deb42c4f9776e59bee247c14af9c5e8c05ca9a6Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9ef353c92f9d04c88de3af1a46859c1fb76db0f8Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b0b83d3f3ffa96e8395c56b83d6197e184902a34Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5777432ebaaf797e24f059979b42df3139967163Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0462fec709d51762ba486245bc344f44cc6cfa97Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 799881db3e03b5e98fe6a900d9d7de8c7d61e7eeAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 404ec60438add1afadaffaed34bb5fe4ddcadd40Affected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
4.9.337 through 4.9.*Not affected
4.14.303 through 4.14.*Not affected
4.19.270 through 4.19.*Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

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