CVE-2022-50411
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]…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0462fec709d51762ba486245bc344f44cc6cfa97Patch
- https://git.kernel.org/stable/c/2deb42c4f9776e59bee247c14af9c5e8c05ca9a6Patch
- https://git.kernel.org/stable/c/38e251d356a01b61a86cb35213cafd7e8fe7090cPatch
- https://git.kernel.org/stable/c/404ec60438add1afadaffaed34bb5fe4ddcadd40Patch
- https://git.kernel.org/stable/c/5777432ebaaf797e24f059979b42df3139967163Patch
- https://git.kernel.org/stable/c/799881db3e03b5e98fe6a900d9d7de8c7d61e7eePatch
- https://git.kernel.org/stable/c/9ef353c92f9d04c88de3af1a46859c1fb76db0f8Patch
- https://git.kernel.org/stable/c/b0b83d3f3ffa96e8395c56b83d6197e184902a34Patch
- https://git.kernel.org/stable/c/f520d181477ec29a496c0b3bbfbdb7e2606c2713Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.