Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local…
Priority LOW 31CWE-362Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.
Why it matters now
EPSS 0.00296 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.1 to before 3.2.87; 3.3 to before 3.10.106; 3.11 to before 3.12.71; 3.13 to before 3.16.42; 3.17 to before 4.1.49; 4.2 to before 4.4.52; 4.5 to before 4.9.13 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.1 to before 3.2.87; 3.3 to before 3.10.106; 3.11 to before 3.12.71; 3.13 to before 3.16.42; 3.17 to before 4.1.49; 4.2 to before 4.4.52; 4.5 to before 4.9.13 Vulnerable ·Linux
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6346
- 2026-10-03 Alias added: GHSA-7gj4-9vx9-5hmq
References
Patch 4
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13
- [oss-security] 20170228 Linux: packet: fix races in fanout_add() (CVE-2017-6346)
- https://github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2017-6346 · CVE Program
- CVE-2017-6346 · NVD
- FIRST EPSS
- GHSA-7gj4-9vx9-5hmq · GitHub Advisory Database · CC BY 4.0
- CVE-2017-6346 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences