CVE-2022-49357

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Source
https://cve.org/CVERecord?id=CVE-2022-49357
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49357.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49357
Downstream
Related
Published
2025-02-26T02:11:06.931Z
Modified
2026-03-20T12:22:23.153061Z
Summary
efi: Do not import certificates from UEFI Secure Boot for T2 Macs
Details

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:

WARNING: CPU: 3 PID: 104 at arch/x86/platform/efi/quirks.c:735 eficrashgracefullyonpagefault+0x50/0xf0 (Removed some logs from here) Call Trace: <TASK> pagefaultoops+0x4f/0x2c0 ? searchbpfextables+0x6b/0x80 ? searchmoduleextables+0x50/0x80 ? searchexceptiontables+0x5b/0x60 kernelmodefixuporoops+0x9e/0x110 __badareanosemaphore+0x155/0x190 badareanosemaphore+0x16/0x20 dokernaddrfault+0x8c/0xa0 excpagefault+0xd8/0x180 asmexcpagefault+0x1e/0x30 (Removed some logs from here) ? _eficall+0x28/0x30 ? switchmm+0x20/0x30 ? eficallrts+0x19a/0x8e0 ? processonework+0x222/0x3f0 ? workerthread+0x4a/0x3d0 ? kthread+0x17a/0x1a0 ? processonework+0x3f0/0x3f0 ? setkthreadstruct+0x40/0x40 ? retfromfork+0x22/0x30 </TASK> ---[ end trace 1f82023595a5927f ]--- efi: Froze efirtswq and disabled EFI Runtime Services integrity: Couldn't get size: 0x8000000000000015 integrity: MODSIGN: Couldn't get UEFI db list efi: EFI Runtime Services are disabled! integrity: Couldn't get size: 0x8000000000000015 integrity: Couldn't get UEFI dbx list integrity: Couldn't get size: 0x8000000000000015 integrity: Couldn't get mokx list integrity: Couldn't get size: 0x80000000

So we avoid reading these UEFI variables and thus prevent the crash.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49357.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
15ea0e1e3e185040bed6119f815096f2e4326242
Fixed
b1cda6dd2c44771f042d65f0d17bec322ef99a0a
Fixed
c072cab98bac11f6ef9db640fb51834d9552e2e6
Fixed
65237307f88f5200782ae7f243bdd385e37cde5d
Fixed
b34786b25d75f9c119696e6bdf3827f54ae3601b
Fixed
1f7264f0510f519b4e4f575a8f0579ea65e7592e
Fixed
155ca952c7ca19aa32ecfb7373a32bbc2e1ec6eb

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49357.json"