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CVE-2015-1333

15
FAUCET Score

CVE-2015-1333 describes a memory leak in the Linux kernel, specifically within the __key_link_end function, affecting versions prior to 4.1.4. An unprivileged local attacker can trigger this vulnerability by repeatedly using the add_key system call with references to existing keys, leading to excessive memory consumption and a denial of service. The vulnerability has a CVSS score of 4.9, indicating a low attack complexity and local access requirement, with the primary impact being system availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.3CPE 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
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 73rd percentile among its peer group of 3,050 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

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-229.14.1.rt56.141.13.el7_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-229.14.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-229.rt56.161.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2015-1333Moderate

kernel: denial of service due to memory leak in add_key()

Jul 27, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
rhn.redhat.com / errata/RHSA-2015-1778.html
rhn.redhat.com / errata/RHSA-2015-1787.html
bugzilla.redhat.com / show_bug.cgi
github.com / torvalds/linux/commit/ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
support.f5.com / csp/article/K05211147
debian.org / security/2015/dsa-3329
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.1.4
Vendor Advisory
openwall.com / lists/oss-security/2015/07/27/7
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/76050
ubuntu.com / usn/USN-2687-1
ubuntu.com / usn/USN-2688-1
ubuntu.com / usn/USN-2689-1
ubuntu.com / usn/USN-2690-1
ubuntu.com / usn/USN-2691-1