The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service. (CVE-2006-6058)
Alexander Schulze discovered that the skge driver does not properly use the spin_lock and spin_unlock functions. Remote attackers could exploit this by sending a flood of network traffic and cause a denial of service (crash). (CVE-2006-7229)
14 February 2008
A security issue affects these releases of Ubuntu and its derivatives:
The minix filesystem did not properly validate certain filesystem values. If a local attacker could trick the system into attempting to mount a corrupted minix filesystem, the kernel could be made to hang for long periods of time, resulting in a denial of service. (CVE-2006-6058)
Alexander Schulze discovered that the skge driver does not properly use the spin_lock and spin_unlock functions. Remote attackers could exploit this by sending a flood of network traffic and cause a denial of service (crash). (CVE-2006-7229)
Hugh Dickins discovered that hugetlbfs performed certain prio_tree calculations using HPAGE_SIZE instead of PAGE_SIZE. A local user could exploit this and cause a denial of service via kernel panic. (CVE-2007-4133)
Chris Evans discovered an issue with certain drivers that use the ieee80211_rx function. Remote attackers could send a crafted 802.11 frame and cause a denial of service via crash. (CVE-2007-4997)
Alex Smith discovered an issue with the pwc driver for certain webcam devices. A local user with physical access to the system could remove the device while a userspace application had it open and cause the USB subsystem to block. (CVE-2007-5093)
Scott James Remnant discovered a coding error in ptrace. Local users could exploit this and cause the kernel to enter an infinite loop. (CVE-2007-5500)
Venustech AD-LAB discovered a buffer overflow in the isdn net subsystem. This issue is exploitable by local users via crafted input to the isdn_ioctl function. (CVE-2007-6063)
It was discovered that the isdn subsystem did not properly check for NULL termination when performing ioctl handling. A local user could exploit this to cause a denial of service. (CVE-2007-6151)
Blake Frantz discovered that when a root process overwrote an existing core file, the resulting core file retained the previous core file’s ownership. Local users could exploit this to gain access to sensitive information. (CVE-2007-6206)
Hugh Dickins discovered the when using the tmpfs filesystem, under rare circumstances, a kernel page may be improperly cleared. A local user may be able to exploit this and read sensitive kernel data or cause a denial of service via crash. (CVE-2007-6417)
Bill Roman discovered that the VFS subsystem did not properly check access modes. A local user may be able to gain removal privileges on directories. (CVE-2008-0001)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system upgrade you need to reboot your computer to effect the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-386, linux-powerpc, linux-amd64-generic), a standard system upgrade will automatically perform this as well.
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