Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in sound/core/control.c in the ALSA control implement…

published 2014-07-03 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-4578

cvss: 1.9; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits: 0; none known

Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allows local users to obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access.

Patch / fix

fixed in 1 distros 3 links 1

linux linux_kernel 3.15.2

debian ubuntu red hat

linux Debian 14, Debian 13, Debian 12 3.14.9-1

debian advisories DEBIAN-CVE-2014-4652

linux Ubuntu 14.04 LTS 3.13.0-35.62

ubuntu advisories UBUNTU-CVE-2014-4652

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 6 2.6.32-573.el6
perf RHEL 6 2.6.32-573.el6
python-perf RHEL 6 2.6.32-573.el6
kernel-kdump RHEL 6 2.6.32-573.el6
kernel-firmware RHEL 6 2.6.32-573.el6
kernel-bootwrapper RHEL 6 2.6.32-573.el6
kernel-abi-whitelists RHEL 6 2.6.32-573.el6
kernel-debuginfo-common-i686 RHEL 6 2.6.32-573.el6

red hat advisories RHSA-2015:1272 RHSA-2014:1971 RHSA-2014:1083

github.com/torvalds/linux@07f4d9d commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-4652 updated 2026-11-07 cvss 1.5

Kernel: ALSA: control: protect user controls against races & memory disclosure

Red Hat Enterprise Linux 5 kernel
affected: no fix available
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-123.13.1.el7, kernel 3.10.0-123.13.1.el7, kernel-tools 3.10.0-123.13.1.el7, kernel-tools-libs 3.10.0-123.13.1.el7, kernel-abi-whitelists 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7 Red Hat Enterprise Linux Client Optional (v. 7) python-perf 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-123.13.1.el7, kernel 3.10.0-123.13.1.el7, kernel-tools 3.10.0-123.13.1.el7, kernel-tools-libs 3.10.0-123.13.1.el7, kernel-abi-whitelists 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-perf 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7
fixed: vendor fix RHSA-2014:1971
Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-573.el6, kernel 2.6.32-573.el6, kernel-firmware 2.6.32-573.el6, kernel-abi-whitelists 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-573.el6, kernel 2.6.32-573.el6, kernel-firmware 2.6.32-573.el6, kernel-abi-whitelists 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-573.el6, kernel 2.6.32-573.el6, kernel-kdump 2.6.32-573.el6, kernel-firmware 2.6.32-573.el6, kernel-bootwrapper 2.6.32-573.el6, kernel-abi-whitelists 2.6.32-573.el6, +4 more
fixed: vendor fix RHSA-2015:1272
Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-123.13.1.el7, kernel 3.10.0-123.13.1.el7, kernel-kdump 3.10.0-123.13.1.el7, kernel-tools 3.10.0-123.13.1.el7, kernel-tools-libs 3.10.0-123.13.1.el7, kernel-bootwrapper 3.10.0-123.13.1.el7, +4 more
fixed: vendor fix RHSA-2014:1971
Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-ppc64 2.6.32-573.el6, kernel-debuginfo-common-s390x 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6
fixed: vendor fix RHSA-2015:1272
Red Hat Enterprise Linux Server Optional (v. 7) python-perf 3.10.0-123.13.1.el7, kernel-debuginfo-common-ppc64 3.10.0-123.13.1.el7, kernel-debuginfo-common-s390x 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7
fixed: vendor fix RHSA-2014:1971
Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-573.el6, kernel 2.6.32-573.el6, kernel-firmware 2.6.32-573.el6, kernel-abi-whitelists 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6
fixed: vendor fix RHSA-2015:1272
Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-123.13.1.el7, kernel 3.10.0-123.13.1.el7, kernel-tools 3.10.0-123.13.1.el7, kernel-tools-libs 3.10.0-123.13.1.el7, kernel-abi-whitelists 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7
fixed: vendor fix RHSA-2014:1971

show 3 more

Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-573.el6, kernel-debuginfo-common-i686 2.6.32-573.el6, kernel-debuginfo-common-x86_64 2.6.32-573.el6
fixed: vendor fix RHSA-2015:1272
Red Hat Enterprise Linux Workstation Optional (v. 7) python-perf 3.10.0-123.13.1.el7, kernel-debuginfo-common-x86_64 3.10.0-123.13.1.el7
fixed: vendor fix RHSA-2014:1971
Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.33-rt32.45.el6rt, kernel-rt-trace 3.10.33-rt32.45.el6rt, kernel-rt-vanilla 3.10.33-rt32.45.el6rt, kernel-rt-firmware 3.10.33-rt32.45.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.33-rt32.45.el6rt
fixed: vendor fix RHSA-2014:1083

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	1.9	AV:L/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/07f4d9d74a04aa7c72c5dae0ef97565f28f17b92
patch, third-party-advisory
ubuntu.com /usn/USN-2335-1
vendor-advisory, third-party-advisory
ubuntu.com /usn/USN-2334-1
vendor-advisory, third-party-advisory
rhn.redhat.com /errata/RHSA-2014-1083.html
vendor-advisory, third-party-advisory
rhn.redhat.com /errata/RHSA-2015-1272.html
vendor-advisory, third-party-advisory
lists.opensuse.org /opensuse-security-announce/2015-04/msg00020.html
vendor-advisory, mailing-list, third-party-advisory
kernel.org /pub/linux/kernel/v3.x/ChangeLog-3.15.2
release-notes, vendor-advisory
secunia.com /advisories/60545
third-party-advisory
bugzilla.redhat.com /show_bug.cgi?id=1113406
issue-tracking, third-party-advisory
secunia.com /advisories/60564
third-party-advisory
secunia.com /advisories/59777
third-party-advisory
secunia.com /advisories/59434
third-party-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/94412
vdb-entry, third-party-advisory
git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=07f4d9d74a04aa7c72c5dae0ef97565f28f17b92
openwall.com /lists/oss-security/2014/06/26/6
mailing-list, third-party-advisory

Sources

CVE List CVE-2014-4652
NVD CVE-2014-4652

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary