CVE-2022-3636

Linux Kernel Ethernet mtk_ppe.c __mtk_ppe_check_skb use after free

State: Published
Severity: 5.1 Medium
Published: Oct 21, 2022
Updated: Jul 28, 2026
Reserved: Oct 21, 2022

Description

A vulnerability was identified in Linux Kernel 33fc42de33278b2b3ec6f3390512987bc29a62b7. This affects the function __mtk_ppe_check_skb of the file drivers/net/ethernet/mediatek/mtk_ppe.c of the component Ethernet Handler. Such manipulation leads to use after free. The name of the patch is 17a5f6a78dc7b8db385de346092d7d9f9dc24df6. It is best practice to apply a patch to resolve this issue. No released Linux Kernel version was ever affected by this CVE.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	5.5 Medium	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
3.0	5.5 Medium	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	4.9 Medium	AV:A/AC:M/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-416 Use After Free
CWE-119 Memory Corruption

Affected Products

Product	Versions
KernelLinux	33fc42de33278b2b3ec6f3390512987bc29a62b7Affected

References

VDB-211935 | Linux Kernel Ethernet mtk_ppe.c __mtk_ppe_check_skb use after freevdb-entrytechnical-description
VDB-211935 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2022-3636 | CVE Analysis and Reportthird-party-advisory
https://git.kernel.org/pub/scm/linux/kernel/git/pabeni/net-next.git/commit/?id=17a5f6a78dc7b8db385de346092d7d9f9dc24df6patch
https://www.kernel.org/product
https://vuldb.com/?id.211935
DSA-5333vendor-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.