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CVE-2015-7990

16
FAUCET Score

CVE-2015-7990 is a race condition in the Linux kernel's rds_sendmsg function (net/rds/sendmsg.c) affecting versions before 4.3.3. This vulnerability, an incomplete fix for CVE-2015-6937, allows a local attacker to trigger a NULL pointer dereference and system crash (denial of service) by using an improperly bound socket. Rated 5.8 MEDIUM (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H), it requires local access and has high attack complexity, with potential for data confidentiality/integrity impact and high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.8MEDIUM

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 76th percentile among its peer group of 1,297 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

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

Vendor Advisories (1)

redhatCVE-2015-7990Moderate

kernel: Race condition when sending message on unbound socket causing NULL pointer dereference

Oct 16, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
lists.opensuse.org / opensuse-security-announce/2015-11/msg00035.html
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/2016-02/msg00007.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00009.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00013.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00017.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00018.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00019.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00020.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00021.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00022.html
lists.opensuse.org / opensuse-security-announce/2016-02/msg00034.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
bugzilla.suse.com / show_bug.cgi
github.com / torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a
lkml.org / lkml/2015/10/16/530
debian.org / security/2015/dsa-3396
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.3.3
Vendor Advisory
openwall.com / lists/oss-security/2015/10/27/5
oracle.com / technetwork/security-advisory/cpuoct2018-4428296.html
securityfocus.com / bid/77340
securitytracker.com / id/1034453
ubuntu.com / usn/USN-2886-1
ubuntu.com / usn/USN-2887-1
ubuntu.com / usn/USN-2887-2
ubuntu.com / usn/USN-2888-1
ubuntu.com / usn/USN-2889-1
ubuntu.com / usn/USN-2889-2
ubuntu.com / usn/USN-2890-1
ubuntu.com / usn/USN-2890-2
ubuntu.com / usn/USN-2890-3