Description
Integer signedness error in the pkt_find_dev_from_minor function in drivers/block/pktcdvd.c in the Linux kernel before 2.6.36-rc6 allows local users to obtain sensitive information from kernel memory or cause a denial of service (invalid pointer dereference and system crash) via a crafted index value in a PKT_CTRL_CMD_STATUS ioctl call.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | linux-2.6 | 2.6.26-26lenny1 | DSA-2126-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +14 | 2.6.32-71.7.1.el6 | RHSA-2010:0842 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Linux Kernel < 2.6.36-rc6 (RedHat / Ubuntu 10.04) - 'pktcdvd' Kernel Memory Disclosure EDB-15150 · local · Sep 29, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- RHSA-2010:0842 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2126-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- SUSE-SA:2011:004 vendor-advisory
- 42778 third-party-advisory
- USN-1000-1 vendor-advisory
- 42801 third-party-advisory
- 43551 vdb-entry
- SUSE-SA:2011:002 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=638085
- SUSE-SA:2011:001 vendor-advisory
- 42932 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.36-rc6
- 15150 exploit
- [oss-security] 20100928 CVE request - kernel: pktcdvd ioctl dev_minor missing range check mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=252a52aa4fa22a668f019e55b3aac3ff71ec1c29
- ADV-2011-0124 vdb-entry
- SUSE-SA:2011:007 vendor-advisory
- SUSE-SA:2010:060 vendor-advisory
- RHSA-2010:0842 vendor-advisory
- ADV-2011-0298 vdb-entry
- MDVSA-2011:051 vendor-advisory
- [oss-security] 20100928 Re: CVE request - kernel: pktcdvd ioctl dev_minor missing range check mailing-list
- http://jon.oberheide.org/files/cve-2010-3437.c
- ADV-2011-0012 vdb-entry
- MDVSA-2011:029 vendor-advisory
- DSA-2126 vendor-advisory