CVE-2022-47929
- State
- Published
- Severity
- 5.5 Medium
- Published
- Jan 17, 2023
- Updated
- Oct 14, 2026
- Reserved
- Dec 22, 2022
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-476 NULL Pointer Dereference
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://www.spinics.net/lists/netdev/msg555705.html
- https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
- DSA-5324vendor-advisory
- [debian-lts-announce] 20230302 [SECURITY] [DLA 3349-1] linux-5.10 security updatemailing-list
- [debian-lts-announce] 20230503 [SECURITY] [DLA 3403-1] linux security updatemailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html
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