linux-2.6 - several vulnerabilities


Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, sensitive memory leak or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems: * [CVE-2009-1883](https://security-tracker.debian.org/tracker/CVE-2009-1883) Solar Designer discovered a missing capability check in the z90crypt driver or s390 systems. This vulnerability may allow a local user to gain elevated privileges. * [CVE-2009-2909](https://security-tracker.debian.org/tracker/CVE-2009-2909) Arjan van de Ven discovered an issue in the AX.25 protocol implementation. A specially crafted call to setsockopt() can result in a denial of service (kernel oops). * [CVE-2009-3001](https://security-tracker.debian.org/tracker/CVE-2009-3001) Jiri Slaby fixed a sensitive memory leak issue in the ANSI/IEEE 802.2 LLC implementation. This is not exploitable in the Debian lenny kernel as root privileges are required to exploit this issue. * [CVE-2009-3002](https://security-tracker.debian.org/tracker/CVE-2009-3002) Eric Dumazet fixed several sensitive memory leaks in the IrDA, X.25 PLP (Rose), NET/ROM, Acorn Econet/AUN, and Controller Area Network (CAN) implementations. Local users can exploit these issues to gain access to kernel memory. * [CVE-2009-3228](https://security-tracker.debian.org/tracker/CVE-2009-3228) Eric Dumazet reported an instance of uninitialized kernel memory in the network packet scheduler. Local users may be able to exploit this issue to read the contents of sensitive kernel memory. * [CVE-2009-3238](https://security-tracker.debian.org/tracker/CVE-2009-3238) Linus Torvalds provided a change to the get\_random\_int() function to increase its randomness. * [CVE-2009-3286](https://security-tracker.debian.org/tracker/CVE-2009-3286) Eric Paris discovered an issue with the NFSv4 server implementation. When an O\_EXCL create fails, files may be left with corrupted permissions, possibly granting unintentional privileges to other local users. * [CVE-2009-3547](https://security-tracker.debian.org/tracker/CVE-2009-3547) Earl Chew discovered a NULL pointer dereference issue in the pipe\_rdwr\_open function which can be used by local users to gain elevated privileges. * [CVE-2009-3612](https://security-tracker.debian.org/tracker/CVE-2009-3612) Jiri Pirko discovered a typo in the initialization of a structure in the netlink subsystem that may allow local users to gain access to sensitive kernel memory. * [CVE-2009-3621](https://security-tracker.debian.org/tracker/CVE-2009-3621) Tomoki Sekiyama discovered a deadlock condition in the UNIX domain socket implementation. Local users can exploit this vulnerability to cause a denial of service (system hang). For the oldstable distribution (etch), this problem has been fixed in version 2.6.18.dfsg.1-26etch1. We recommend that you upgrade your linux-2.6, fai-kernels, and user-mode-linux packages. Note: Debian 'etch' includes linux kernel packages based upon both the 2.6.18 and 2.6.24 linux releases. All known security issues are carefully tracked against both packages and both packages will receive security updates until security support for Debian 'etch' concludes. However, given the high frequency at which low-severity security issues are discovered in the kernel and the resource requirements of doing an update, lower severity 2.6.18 and 2.6.24 updates will typically release in a staggered or "leap-frog" fashion. The following matrix lists additional source packages that were rebuilt for compatibility with or to take advantage of this update: | | Debian 4.0 (etch) | | --- | --- | | fai-kernels | 1.17+etch.26etch1 | | user-mode-linux | 2.6.18-1um-2etch.26etch1 |

Affected Software

CPE Name Name Version
linux-2.6 2.6.18.dfsg.1-12
linux-2.6 2.6.18.dfsg.1-12etch1
linux-2.6 2.6.18.dfsg.1-12etch2
linux-2.6 2.6.18.dfsg.1-13
linux-2.6 2.6.18.dfsg.1-13etch1
linux-2.6 2.6.18.dfsg.1-13etch2
linux-2.6 2.6.18.dfsg.1-13etch3
linux-2.6 2.6.18.dfsg.1-13etch4
linux-2.6 2.6.18.dfsg.1-13etch5
linux-2.6 2.6.18.dfsg.1-13etch6
linux-2.6 2.6.18.dfsg.1-13lenny1
linux-2.6 2.6.18.dfsg.1-14
linux-2.6 2.6.18.dfsg.1-15
linux-2.6 2.6.18.dfsg.1-16
linux-2.6 2.6.18.dfsg.1-17
linux-2.6 2.6.18.dfsg.1-17etch1
linux-2.6 2.6.18.dfsg.1-18
linux-2.6 2.6.18.dfsg.1-18etch1
linux-2.6 2.6.18.dfsg.1-18etch3
linux-2.6 2.6.18.dfsg.1-18etch4
linux-2.6 2.6.18.dfsg.1-18etch5
linux-2.6 2.6.18.dfsg.1-18etch6
linux-2.6 2.6.18.dfsg.1-19
linux-2.6 2.6.18.dfsg.1-20
linux-2.6 2.6.18.dfsg.1-21
linux-2.6 2.6.18.dfsg.1-22
linux-2.6 2.6.18.dfsg.1-22etch1
linux-2.6 2.6.18.dfsg.1-22etch2
linux-2.6 2.6.18.dfsg.1-22etch3
linux-2.6 2.6.18.dfsg.1-23
linux-2.6 2.6.18.dfsg.1-23etch1
linux-2.6 2.6.18.dfsg.1-24
linux-2.6 2.6.18.dfsg.1-24etch1
linux-2.6 2.6.18.dfsg.1-24etch2
linux-2.6 2.6.18.dfsg.1-24etch3
linux-2.6 2.6.18.dfsg.1-24etch4
linux-2.6 2.6.18.dfsg.1-26