CVE-2022-4269

MEDIUM5.5

A flaw was found in the Linux kernel Traffic Control (TC) subsystem

Published Dec 5, 2022

Modified 9 months ago

No fix available

Details

A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action "mirred") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.

References

WEBhttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html WEBhttps://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti%40redhat.com/WEBhttps://security.netapp.com/advisory/ntap-20230929-0001/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2022-4269 WEBhttps://www.debian.org/security/2023/dsa-5480

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

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

Weakness Type (CWE)

Other

CWE-833

Ecosystems

Timeline

PublishedDec 5, 2022

ModifiedApr 14, 2025