TI-2019-12679 Aliases CVE-2019-16994 GHSA-j78w-mvwv-rwcf

In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c…

LOW 22CWE-401Published 2019-09-30 · Updated 2024-08-05

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 14 fixed, 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.

Summary

In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when register_netdev() fails to register sitn->fb_tunnel_dev, which may cause denial of service, aka CID-07f12b26e21a.

Why it matters now

EPSS 0.00454 39th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Red Hat: 4 advisoriesRed Hat: 14 fixed, 4 without a fix

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 · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	before 5.0	Vulnerable	Linux
cpe:2.3:o:opensuse:leap:15.1:::::::*	15.1	Vulnerable	openSUSE
cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*	7.0	Vulnerable	Red Hat

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.0 Vulnerable ·Linux
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 4 advisories

RHSA-2020:4060 Released 2020-09-29 · Red Hat rating Important
kernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.el7, kernel-tools-libs-devel-3.10.0-1160.el7
- Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.el7, kernel-3.10.0-1160.el7, kernel-abi-whitelists-3.10.0-1160.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.el7
RHSA-2020:4062 Released 2020-09-29 · Red Hat rating Important
kernel-rt security and bug fix update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-devel-3.10.0-1160.rt56.1131.el7 +4
- Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-3.10.0-1160.rt56.1131.el7, kernel-rt-debug-devel-3.10.0-1160.rt56.1131.el7 +7
RHSA-2019:3517 Released 2019-11-05 · Red Hat rating Important
kernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-147.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-147.el8, kernel-4.18.0-147.el8, kernel-abi-whitelists-4.18.0-147.el8 +19

Show 1 more Red Hat advisories

RHSA-2019:3309 Released 2019-11-05 · Red Hat rating Important
kernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-147.rt24.93.el8, kernel-rt-core-4.18.0-147.rt24.93.el8, kernel-rt-debug-4.18.0-147.rt24.93.el8 +7
- Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-147.rt24.93.el8, kernel-rt-core-4.18.0-147.rt24.93.el8, kernel-rt-debug-4.18.0-147.rt24.93.el8 +9

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 5	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise MRG 2	Affected	No fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)	Fixed	RHSA-2019:3517
Red Hat Enterprise Linux BaseOS (v. 8)	Fixed	RHSA-2019:3517
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux ComputeNode (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux ComputeNode Optional (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux Real Time (v. 8)	Fixed	RHSA-2019:3309
Red Hat Enterprise Linux Real Time for NFV (v. 8)	Fixed	RHSA-2019:3309
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2020:4060
Red Hat Enterprise Linux for Real Time (v. 7)	Fixed	RHSA-2020:4062
Red Hat Enterprise Linux for Real Time for NFV (v. 7)	Fixed	RHSA-2020:4062

Timeline

2026-10-02 Threatist record created from CVE-2019-16994
2026-10-03 Alias added: GHSA-j78w-mvwv-rwcf

References

Exploit 1

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07f12b26e21ab359261bf75cfcb424fdc7daeb6d

Patch 1

https://github.com/torvalds/linux/commit/07f12b26e21ab359261bf75cfcb424fdc7daeb6d

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences