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CVE-2022-49357

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: efi: Do not import certificates from UEFI Secure Boot for T2 Macs On Apple T2 Macs, when Linux attempts to read the db and dbx…

Published Feb 26, 2025EPSS 0.17%

Overview

CVE-2022-49357 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

efi: Do not import certificates from UEFI Secure Boot for T2 Macs

On Apple T2 Macs, when Linux attempts to read the db and dbx efi variables

at early boot to load UEFI Secure Boot certificates, a page fault occurs

in Apple firmware code and EFI runtime services are disabled with the

following logs:

[Firmware Bug]: Page fault caused by firmware at PA: 0xffffb1edc0068000

WARNING: CPU: 3 PID: 104 at arch/x86/platform/efi/quirks.c:735 efi_crash_gracefully_on_page_fault+0x50/0xf0

(Removed some logs from here)

Call Trace:

<TASK>

page_fault_oops+0x4f/0x2c0

? search_bpf_extables+0x6b/0x80

? search_module_extables+0x50/0x80

? search_exception_tables+0x5b/0x60

kernelmode_fixup_or_oops+0x9e/0x110

__bad_area_nosemaphore+0x155/0x190

bad_area_nosemaphore+0x16/0x20

do_kern_addr_fault+0x8c/0xa0

exc_page_fault+0xd8/0x180

asm_exc_page_fault+0x1e/0x30

(Removed some logs from here)

? __efi_call+0x28/0x30

? switch_mm+0x20/0

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/155ca952c7ca19aa32ecfb7373a32bbc2e1ec6ebRefgit.kernel.org/stable/c/1f7264f0510f519b4e4f575a8f0579ea65e7592eRefgit.kernel.org/stable/c/65237307f88f5200782ae7f243bdd385e37cde5dRefgit.kernel.org/stable/c/b1cda6dd2c44771f042d65f0d17bec322ef99a0aRefgit.kernel.org/stable/c/b34786b25d75f9c119696e6bdf3827f54ae3601bRefgit.kernel.org/stable/c/c072cab98bac11f6ef9db640fb51834d9552e2e6

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49357?

CVE-2022-49357 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49357?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49357?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49357?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49357 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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