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CVE-2022-3636

25
FAUCET Score

CVE-2022-3636 is a critical use-after-free vulnerability in the Linux Kernel's Ethernet Handler, specifically affecting the __mtk_ppe_check_skb function in mtk_ppe.c, impacting Debian Linux distributions. With a CVSS score of 7.8 (High), it allows a local attacker to achieve high confidentiality, integrity, and availability impacts with low attack complexity. Currently, there is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
24.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 63rd percentile among its peer group of 17,070 CVEs.

Social Chatter

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-2022-3636Moderate

Kernel: A use after free in __mtk_ppe_check_skb in drivers/net/ethernet/mediatek/mtk_ppe.c

Apr 12, 2022

References

git.kernel.org / pub/scm/linux/kernel/git/pabeni/net-next.git/commit
Mailing ListPatchVendor Advisory
vuldb.com
Permissions RequiredThird Party Advisory
debian.org / security/2023/dsa-5333
Third Party Advisory