Subject: New Linux kernel 2.4.27 packages fix several issues -------------------------------------------------------------------------- Debian Security Advisory DSA XXX-1 security@debian.org http://www.debian.org/security/ Dann Frazier, Simon Horman XXXXX 8th, 2005 http://www.debian.org/security/faq -------------------------------------------------------------------------- Package : kernel-source-2.4.27 Vulnerability : several Problem-Type : local/remote Debian-specific: no CVE IDs : CVE-2004-0887 CVE-2004-1058 CVE-2004-2607 CVE-2005-0449 CVE-2005-1761 CVE-2005-2457 CVE-2005-2555 CVE-2005-2709 CVE-2005-2973 CVE-2005-3257 CVE-2005-3783 CVE-2005-3806 CVE-2005-3848 CVE-2005-3857 CVE-2005-3858 CVE-2005-4618 Debian Bug : Several local and remote vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2004-0887 Martin Schwidefsky discovered that the privileged instruction SACF (Set Address Space Control Fast) on the S/390 platform is not handled properly, allowing for a local user to gain root privileges. CVE-2004-1058 A race condition allows for a local user to read the environment variables of another process that is still spawning through /proc/.../cmdline. CVE-2004-2607 A numeric casting discrepancy in sdla_xfer allows local users to read portions of kernel memory via a large len argument which is received as an int but cast to a short, preventing read loop from filling a buffer. CVE-2005-0449 An error in the skb_checksum_help() function from the netfilter framework has been discovered that allows the bypass of packet filter rules or a denial of service attack. CVE-2005-1761 A vulnerability in the ptrace subsystem of the IA-64 architecture can allow local attackers to overwrite kernel memory and crash the kernel. CVE-2005-2457 Tim Yamin discovered that insufficient input validation in the compressed ISO file system (zisofs) allows a denial of service attack through maliciously crafted ISO images. CVE-2005-2555 Herbert Xu discovered that the setsockopt() function was not restricted to users/processes with the CAP_NET_ADMIN capability. This allows attackers to manipulate IPSEC policies or initiate a denial of service attack. CVE-2005-2709 Al Viro discovered a race condition in the /proc handling of network devices. A (local) attacker could exploit the stale reference after interface shutdown to cause a denial of service or possibly execute code in kernel mode. CVE-2005-2973 Tetsuo Handa discovered that the udp_v6_get_port() function from the IPv6 code can be forced into an endless loop, which allows a denial of service attack. CVE-2005-3257 Rudolf Polzer discovered that the kernel improperly restricts access to the KDSKBSENT ioctl, which can possibly lead to privilege escalation. CVE-2005-3783 The ptrace code using CLONE_THREAD didn't use the thread group ID to determine whether the caller is attaching to itself, which allows a denial of service attack. CVE-2005-3806 Yen Zheng discovered that the IPv6 flow label code modified an incorrect variable, which could lead to memory corruption and denial of service. CVE-2005-3848 Ollie Wild discovered a memory leak in the icmp_push_reply() function, which allows denial of service through memory consumption. CVE-2005-3857 Chris Wright discovered that excessive allocation of broken file lock leases in the VFS layer can exhaust memory and fill up the system logging, which allows denial of service. CVE-2005-3858 Patrick McHardy discovered a memory leak in the ip6_input_finish() function from the IPv6 code, which allows denial of service. CVE-2005-4618 Yi Ying discovered that sysctl does not properly enforce the size of a buffer, which allows a denial of service attack. The following matrix explains which kernel version for which architecture fix the problems mentioned above: Debian 3.1 (sarge) Source 2.4.27-10sarge2 Alpha architecture 2.4.27-10sarge2 ARM architecture 2.4.27-2sarge2 Intel IA-32 architecture 2.4.27-10sarge2 Intel IA-64 architecture 2.4.27-10sarge2 Motorola 680x0 architecture 2.4.27-3sarge2 Big endian MIPS architecture 2.4.27-10.sarge1.040815-2 Little endian MIPS architecture 2.4.27-10.sarge1.040815-2 PowerPC architecture 2.4.27-10sarge2 IBM S/390 architecture 2.4.27-2sarge2 Sun Sparc architecture 2.4.27-9sarge2 The following matrix lists additional packages that were rebuilt for compatability with or to take advantage of this update: Debian 3.1 (sarge) kernel-latest-2.4-alpha 101sarge1 kernel-latest-2.4-i386 101sarge1 kernel-latest-2.4-s390 2.4.27-1sarge1 kernel-latest-2.4-sparc 42sarge1 kernel-latest-powerpc 102sarge1 fai-kernels 1.9.1sarge1 i2c 1:2.9.1-1sarge1 kernel-image-speakup-i386 2.4.27-1.1sasrge1 lm-sensors 1:2.9.1-1sarge3 mindi-kernel 2.4.27-2sarge1 pcmcia-modules-2.4.27-i386 3.2.5+2sarge1 systemimager 3.2.3-6sarge1 We recommend that you upgrade your kernel package immediately and reboot the machine. If you have built a custom kernel from the kernel source package, you will need to rebuild to take advantage of these fixes. Upgrade Instructions -------------------- wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 3.1 alias sarge -------------------------------- These files will probably be moved into the stable distribution on its next update. --------------------------------------------------------------------------------- For apt-get: deb http://security.debian.org/ stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: debian-security-announce@lists.debian.org Package info: `apt-cache show ' and http://packages.debian.org/