CVE-2014-0038 — The compat_sys_recvmmsg function in net/compat

The compat_sys_recvmmsg function in net/compat.c in the Linux kernel before 3.13.2, when CONFIG_X86_X32 is enabled, allows local users to gain privileges via a recvmmsg system call with a crafted timeout pointer parameter.

01What is this vulnerability?

The compat_sys_recvmmsg function in net/compat.c in the Linux kernel before 3.13.2, when CONFIG_X86_X32 is enabled, allows local users to gain privileges via a recvmmsg system call with a crafted timeout pointer parameter.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2014-02-06T22:00:00.000Z
• Last modified: 2024-08-06T08:58:26.620Z

09References

• git.kernel.org — http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=…
• www.ubuntu.com — http://www.ubuntu.com/usn/USN-2096-1
• github.com — https://github.com/saelo/cve-2014-0038
• www.ubuntu.com — http://www.ubuntu.com/usn/USN-2095-1
• pastebin.com — http://pastebin.com/raw.php?i=DH3Lbg54
• code.google.com — https://code.google.com/p/chromium/issues/detail?id=338594
• www.ubuntu.com — http://www.ubuntu.com/usn/USN-2094-1
• www.mandriva.com — http://www.mandriva.com/security/advisories?name=MDVSA-2014:038
• secunia.com — http://secunia.com/advisories/56669
• www.securityfocus.com — http://www.securityfocus.com/bid/65255
• github.com — https://github.com/torvalds/linux/commit/2def2ef2ae5f3990aabdbe8a755911902707d26…
• www.exploit-db.com — https://www.exploit-db.com/exploits/40503/
• www.kernel.org — http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.2
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1060023
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
• www.exploit-db.com — http://www.exploit-db.com/exploits/31347
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
• www.exploit-db.com — http://www.exploit-db.com/exploits/31346
• www.openwall.com — http://www.openwall.com/lists/oss-security/2014/01/31/2