CVE-2017-8067

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-23 · updated 2026-06-17
Weakness: CWE-787

Description

drivers/char/virtio_console.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.

Affected products

Linux kernel: from 4.9 before 4.9.24; from 4.10 before 4.10.12 — fixed in 4.10.12, 4.9.24

How to fix

Upgrade to a fixed version: Linux kernel 4.10.12, 4.9.24. Check the vendor advisory for mitigations.

References

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.12
http://www.openwall.com/lists/oss-security/2017/04/16/4
http://www.securityfocus.com/bid/97997
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c4baad50297d84bde1a7ad45e50c73adae4a2192
https://github.com/torvalds/linux/commit/c4baad50297d84bde1a7ad45e50c73adae4a2192
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.12
http://www.openwall.com/lists/oss-security/2017/04/16/4
http://www.securityfocus.com/bid/97997
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c4baad50297d84bde1a7ad45e50c73adae4a2192
https://github.com/torvalds/linux/commit/c4baad50297d84bde1a7ad45e50c73adae4a2192

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