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Vulnerability record · CVE-2009-1894 · published 17 July 2009

CVE-2009-1894: Pulseaudio race condition vulnerability

Pulseaudio · Pulseaudio

Race condition in PulseAudio 0.9.9, 0.9.10, and 0.9.14 allows local users to gain privileges via vectors involving creation of a hard link, related to the application setting LD_BIND_NOW to 1, and then calling execv on the target of the /proc/self/exe symlink.

7.2 CVSS 2.0 High EPSS 0.74% · top 47.4% CWE-362 · Race condition
7.2CVSS 2.0 base score
0.74%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
32References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

Race condition in PulseAudio 0.9.9, 0.9.10, and 0.9.14 allows local users to gain privileges via vectors involving creation of a hard link, related to the application setting LD_BIND_NOW to 1, and then calling execv on the target of the /proc/self/exe symlink.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://blog.cr0.org/2009/07/old-school-local-root-vulnerability-in.html
http://secunia.com/advisories/35868
http://secunia.com/advisories/35886
http://secunia.com/advisories/35896
http://security.gentoo.org/glsa/glsa-200907-13.xml
http://taviso.decsystem.org/research.html
http://www.akitasecurity.nl/advisory.php?id=AK20090602
http://www.debian.org/security/2009/dsa-1838
http://www.mandriva.com/security/advisories?name=MDVSA-2009:152
http://www.mandriva.com/security/advisories?name=MDVSA-2009:171
http://www.securityfocus.com/archive/1/505052/100/0/threaded
http://www.securityfocus.com/bid/35721 ExploitPatch
http://www.ubuntu.com/usn/usn-804-1
https://admin.fedoraproject.org/updates/pulseaudio-0.9.10-1.el5.2
https://bugzilla.redhat.com/show_bug.cgi?id=510071 ExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/51804
http://blog.cr0.org/2009/07/old-school-local-root-vulnerability-in.html
http://secunia.com/advisories/35868
http://secunia.com/advisories/35886
http://secunia.com/advisories/35896
http://security.gentoo.org/glsa/glsa-200907-13.xml
http://taviso.decsystem.org/research.html
http://www.akitasecurity.nl/advisory.php?id=AK20090602
http://www.debian.org/security/2009/dsa-1838
http://www.mandriva.com/security/advisories?name=MDVSA-2009:152
http://www.mandriva.com/security/advisories?name=MDVSA-2009:171
http://www.securityfocus.com/archive/1/505052/100/0/threaded
http://www.securityfocus.com/bid/35721 ExploitPatch
http://www.ubuntu.com/usn/usn-804-1
https://admin.fedoraproject.org/updates/pulseaudio-0.9.10-1.el5.2
https://bugzilla.redhat.com/show_bug.cgi?id=510071 ExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/51804

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2007-1804Pulseaudio vulnerabilityPulseAudio 0.9.5 allows remote attackers to cause a denial of service (daemon crash) via (1) a PA_PSTREAM_DESCRIPTOR_LENGTH value of FRAME_SIZE_MAX_A…EPSS 7.4%7.2CVE-2008-0008Pulseaudio improper input validation vulnerabilityThe pa_drop_root function in PulseAudio 0.9.8, and a certain 0.9.9 build, does not check return values from (1) setresuid, (2) setreuid, (3) setuid, …EPSS 0.56%6.9CVE-2009-1299Pulseaudio link following vulnerabilityThe pa_make_secure_dir function in core-util.c in PulseAudio 0.9.10 and 0.9.19 allows local users to change the ownership and permissions of arbitrar…EPSS 0.34%4.0CVE-2024-11586Pulseaudio improper resource shutdown vulnerabilityUbuntu's implementation of pulseaudio can be crashed by a malicious program if a bluetooth headset is connected.EPSS 0.30%3.3CVE-2020-11931Pulseaudio improper access control vulnerabilityAn Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended acc…EPSS 0.33%2.9CVE-2014-3970Pulseaudio vulnerabilityThe pa_rtp_recv function in modules/rtp/rtp.c in the module-rtp-recv module in PulseAudio 5.0 and earlier allows remote attackers to cause a denial o…EPSS 1.5%5.5CVE-2025-39964Linux kernel af_alg race condition allows concurrent socket writesThe Linux kernel's af_alg crypto socket implementation did not prevent two concurrent writes to the same socket, allowing data to be interleaved unpr…KEVEPSS 1.00%analysed7.0CVE-2025-62215Windows Kernel race condition and double free privilege escalationA race condition combined with a double free in the Windows Kernel lets a locally authenticated attacker corrupt kernel memory and elevate privileges…KEVEPSS 6.0%analysed

Source: NIST National Vulnerability Database (record CVE-2009-1894), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.