CVE-2015-7799

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-10-19 · updated 2026-06-17

Description

The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call.

Affected products

Linux kernel: through 4.2.2

References

http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
http://lists.opensuse.org/opensuse-updates/2015-12/msg00039.html
http://www.debian.org/security/2015/dsa-3426
http://www.openwall.com/lists/oss-security/2015/10/10/3
http://www.securityfocus.com/bid/77033
http://www.securitytracker.com/id/1033809
http://www.ubuntu.com/usn/USN-2841-1

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