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CVE-2015-7799

15
FAUCET Score

CVE-2015-7799 is a denial-of-service vulnerability affecting the Linux kernel (through version 4.2.3) in the slhc_init function within the SLIP driver. A local attacker can trigger a NULL pointer dereference and system crash by sending a crafted PPPIOCSMAXCID ioctl call due to improper slot number validation. This vulnerability has a CVSS score of 4.9, indicating low attack complexity and local access requirements, with the sole impact being system availability. There is no known exploit code available, nor is there any evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

AV:L/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 83rd percentile among its peer group of 3,052 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (5)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: realtime-kernel

Vendor Advisories (1)

redhatCVE-2015-7799Low

kernel: net: slip: crash when using PPP character device driver

Oct 8, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-12/msg00005.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00018.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00031.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00015.html
lists.opensuse.org / opensuse-security-announce/2016-08/msg00038.html
lists.opensuse.org / opensuse-updates/2015-12/msg00039.html
bugzilla.redhat.com / show_bug.cgi
code.google.com / p/android/issues/detail
Exploit
debian.org / security/2015/dsa-3426
openwall.com / lists/oss-security/2015/10/10/3
securityfocus.com / bid/77033
securitytracker.com / id/1033809
ubuntu.com / usn/USN-2841-1
ubuntu.com / usn/USN-2841-2
ubuntu.com / usn/USN-2842-1
ubuntu.com / usn/USN-2842-2
ubuntu.com / usn/USN-2843-1
ubuntu.com / usn/USN-2843-2
ubuntu.com / usn/USN-2843-3
ubuntu.com / usn/USN-2844-1
ubuntu.com / usn/USN-2886-1