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CVE-2022-47929

Date: January 16, 2023

In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

Language: C

Severity Score

Related Resources (12)

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-47929
https://access.redhat.com/security/cve/CVE-2022-47929
https://nvd.nist.gov/vuln/detail/CVE-2022-47929
https://security-tracker.debian.org/tracker/CVE-2022-47929
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
https://www.debian.org/security/2023/dsa-5324
https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
https://www.spinics.net/lists/netdev/msg555705.html
https://www.mend.io/vulnerability-database/CVE-2022-47929

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

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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