The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.22.7 (including) |
| Red Hat Enterprise Linux 4 | RedHat | kernel-0:2.6.9-55.0.12.EL | * |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-53.1.4.el5 | * |
| Linux | Ubuntu | upstream | * |
| Linux-source-2.6.15 | Ubuntu | dapper | * |
| Linux-source-2.6.17 | Ubuntu | edgy | * |
| Linux-source-2.6.20 | Ubuntu | feisty | * |
| Linux-source-2.6.22 | Ubuntu | gutsy | * |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ccec6e2c4a74adf76ed4e2478091a311b1806212
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.8
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=600
- http://secunia.com/advisories/26918
- http://secunia.com/advisories/26980
- http://secunia.com/advisories/26989
- http://secunia.com/advisories/27101
- http://secunia.com/advisories/27227
- http://secunia.com/advisories/27436
- http://secunia.com/advisories/27747
- http://secunia.com/advisories/27824
- http://secunia.com/advisories/28626
- http://secunia.com/advisories/29054
- http://secunia.com/advisories/30769
- http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
- http://www.debian.org/security/2008/dsa-1479
- http://www.debian.org/security/2008/dsa-1505
- http://www.novell.com/linux/security/advisories/2007_53_kernel.html
- http://www.redhat.com/support/errata/RHSA-2007-0939.html
- http://www.redhat.com/support/errata/RHSA-2007-0993.html
- http://www.securityfocus.com/bid/25807
- http://www.securitytracker.com/id?1018734
- http://www.ubuntu.com/usn/usn-618-1
- http://www.vupen.com/english/advisories/2007/3272
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36780
- https://issues.rpath.com/browse/RPL-1761
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9053
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00083.html
- https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00436.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ccec6e2c4a74adf76ed4e2478091a311b1806212
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.8
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=600
- http://secunia.com/advisories/26918
- http://secunia.com/advisories/26980
- http://secunia.com/advisories/26989
- http://secunia.com/advisories/27101
- http://secunia.com/advisories/27227
- http://secunia.com/advisories/27436
- http://secunia.com/advisories/27747
- http://secunia.com/advisories/27824
- http://secunia.com/advisories/28626
- http://secunia.com/advisories/29054
- http://secunia.com/advisories/30769
- http://support.avaya.com/elmodocs2/security/ASA-2007-474.htm
- http://www.debian.org/security/2008/dsa-1479
- http://www.debian.org/security/2008/dsa-1505
- http://www.novell.com/linux/security/advisories/2007_53_kernel.html
- http://www.redhat.com/support/errata/RHSA-2007-0939.html
- http://www.redhat.com/support/errata/RHSA-2007-0993.html
- http://www.securityfocus.com/bid/25807
- http://www.securitytracker.com/id?1018734
- http://www.ubuntu.com/usn/usn-618-1
- http://www.vupen.com/english/advisories/2007/3272
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36780
- https://issues.rpath.com/browse/RPL-1761
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9053
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00083.html
- https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00436.html