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NVD / CVE Program· CNA Linux

CVE-2022-49357: efi: Do not import certificates from UEFI Secure Boot for T2 Macs

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 155ca952c7ca19aa32ecfb7373a32bbc2e1ec6eb, 1f7264f0510f519b4e4f575a8f0579ea65e7592e, 65237307f88f5200782ae7f243bdd385e37cde5d.

Low priority for now. Upgrade to Linux Linux 155ca952c7ca19aa32ecfb7373a32bbc2e1ec6eb, 1f7264f0510f519b4e4f575a8f0579ea65e7592e, 65237307f88f5200782ae7f243bdd385e37cde5d or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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+0x20/0x30 ? efi_call_rts+0x19a/0x8e0 ? process_one_work+0x222/0x3f0 ? worker_thread+0x4a/0x3d0 ? kthread+0x17a/0x1a0 ? process_one_work+0x3f0/0x3f0 ? set_kthread_struct+0x40/0x40 ? ret_from_fork+0x22/0x30 </TASK> ---[ end trace 1f82023595a5927f ]--- efi: Froze efi_rts_wq 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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.0 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.121
  • linux linux kernel5.11 and later · before 5.15.46
  • linux linux kernel5.16 and later · before 5.17.14
  • linux linux kernel5.18 and later · before 5.18.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.0affected
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before b1cda6dd2c44771f042d65f0d17bec322ef99a0aaffected · git
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before c072cab98bac11f6ef9db640fb51834d9552e2e6affected · git
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before 65237307f88f5200782ae7f243bdd385e37cde5daffected · git
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before b34786b25d75f9c119696e6bdf3827f54ae3601baffected · git
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before 1f7264f0510f519b4e4f575a8f0579ea65e7592eaffected · git
    • 15ea0e1e3e185040bed6119f815096f2e4326242 and later · before 155ca952c7ca19aa32ecfb7373a32bbc2e1ec6ebaffected · git
    • before 5.0not affected · semver
    • 5.4.198 and later · up to and including 5.4.*not affected · semver
    • 5.10.121 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9kernelbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49354Feb 26, 2025 · ata: pata_octeon_cf: Fix refcount leak in octeon_cf_probe
    22Monitor
  • ← EarlierCVE-2022-49356Feb 26, 2025 · SUNRPC: Trap RDMA segment overflows
    22Monitor
  • Later →CVE-2022-49358Feb 26, 2025 · netfilter: nf_tables: memleak flow rule from commit path
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux155ca952c7ca19aa32ecfb7373a32bbc2e1ec6ebVendor (CNA)
Linux Linux1f7264f0510f519b4e4f575a8f0579ea65e7592eVendor (CNA)
Linux Linux65237307f88f5200782ae7f243bdd385e37cde5dVendor (CNA)
Linux Linuxb1cda6dd2c44771f042d65f0d17bec322ef99a0aVendor (CNA)
Linux Linuxb34786b25d75f9c119696e6bdf3827f54ae3601bVendor (CNA)
Linux Linuxc072cab98bac11f6ef9db640fb51834d9552e2e6Vendor (CNA)
almalinux:kernel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux5.18.5-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+2

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records