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CVE-2022-48873

19
FAUCET Score

CVE-2022-48873 is a use-after-free vulnerability in the Linux kernel's fastrpc driver, affecting Linux kernel versions. It arises from improper handling of map removal in error paths and device release, leading to potential memory corruption. With a CVSS score of 7.8 (High), it can be exploited locally with low complexity to achieve high confidentiality, integrity, and availability impacts. There is currently no public exploit code available, it is not listed in CISA's KEV catalog, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.2, < 5.4.230CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.165CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.90CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.4%
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 48th percentile among its peer group of 17,070 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2022-48873Important

kernel: misc: fastrpc: Don't remove map on creater_process and device_release

Aug 21, 2024

References

git.kernel.org / stable/c/193cd853145b63e670bd73740250983af1475330
Patch
git.kernel.org / stable/c/1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8
Patch
git.kernel.org / stable/c/35ddd482345c43d9eec1f3406c0f20a95ed4054b
Patch
git.kernel.org / stable/c/4b5c44e924a571d0ad07054de549624fbc04e4d7
Patch
git.kernel.org / stable/c/5bb96c8f9268e2fdb0e5321cbc358ee5941efc15
Patch