CVE-2017-7308

high

Published 2017-03-29 · Modified 2026-05-13

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CVSS v3

7.8

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.8

Description

The packet_set_ring function in net/packet/af_packet.c in the Linux kernel through 4.10.6 does not properly validate certain block-size data, which allows local users to cause a denial of service (integer signedness error and out-of-bounds write), or gain privileges (if the CAP_NET_RAW capability is held), via crafted system calls.

Predictions

Exploit likelihood

100%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-44654 local linux verified

Metasploit · 2018-05-18

Linux 4.8.0 < 4.8.0-46 - AF_PACKET packet_set_ring Privilege Escalation (Metasploit)

Source code queued for fetch — refresh in a moment.

EDB-47168 local linux

bcoles · 2018-12-29

Linux Kernel 4.8.0-34 < 4.8.0-45 (Ubuntu / Linux Mint) - Packet Socket Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

EDB-41994 local linux verified

Andrey Konovalov · 2017-05-11

Linux Kernel 4.8.0-41-generic (Ubuntu) - Packet Socket Local Privilege Escalation

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/local/af_packet_packet_set_ring_priv_esc rank 400

AF_PACKET packet_set_ring Privilege Escalation

Source fetch failed: fetch_error — view the original via the link above.

OS impact

Linux kernel Affected 1 release

Version	Status	Fixed in
—	Affected	`3.2.89`

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.9.18-1`
sid	Fixed	`4.9.18-1`
forky	Fixed	`4.9.18-1`
bullseye	Fixed	`4.9.18-1`
bookworm	Fixed	`4.9.18-1`

References

CWEs

CWE-681 CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.