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CVE-2022-48879

17
FAUCET Score

CVE-2022-48879 is a NULL pointer dereference vulnerability in the Linux kernel's EFI initialization path, affecting Linux kernel versions where runtime services are unsupported or disabled. This flaw, rated Medium severity (CVSS 5.5), could lead to a denial of service (system crash) if EFI initialization fails under specific conditions. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.19.142, < 4.19.270CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.4.61, < 5.4.229CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.9, < 5.10.164CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.89CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 66th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-48879Moderate

kernel: efi: fix NULL-deref in init error path

Aug 21, 2024

References

git.kernel.org / stable/c/4ca71bc0e1995d15486cd7b60845602a28399cb5
Patch
git.kernel.org / stable/c/585a0b2b3ae7903c6abee3087d09c69e955a7794
Patch
git.kernel.org / stable/c/5fcf75a8a4c3e7ee9122d143684083c9faf20452
Patch
git.kernel.org / stable/c/703c13fe3c9af557d312f5895ed6a5fda2711104
Patch
git.kernel.org / stable/c/adc96d30f6503d30dc68670c013716f1d9fcc747
Patch
git.kernel.org / stable/c/e2ea55564229e4bea1474af15b111b3a3043b76f
Patch