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CVE-2022-4269

Date: December 5, 2022

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.

Severity Score

Related Resources (9)

https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://access.redhat.com/security/cve/CVE-2022-4269
https://nvd.nist.gov/vuln/detail/CVE-2022-4269
https://www.debian.org/security/2023/dsa-5480
https://security.netapp.com/advisory/ntap-20230929-0001/
https://security-tracker.debian.org/tracker/CVE-2022-4269
https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/
https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti%40redhat.com/
https://www.mend.io/vulnerability-database/CVE-2022-4269

Severity Score

Weakness Type (CWE)

Deadlock

CWE-833

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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