linux-source-2.6.15, linux-source-2.6.17, linux-source-2.6.20 vulnerabilities

Releases

• Ubuntu 7.04
• Ubuntu 6.10
• Ubuntu 6.06

Packages

• linux-source-2.6.15 -
• linux-source-2.6.17 -
• linux-source-2.6.20 -

Details

Evan Teran discovered that the Linux kernel ptrace routines did not
correctly handle certain requests robustly. Local attackers could exploit
this to crash the system, causing a denial of service. (CVE-2007-3731)

It was discovered that hugetlb kernels on PowerPC systems did not prevent
the stack from colliding with reserved kernel memory. Local attackers
could exploit this and crash the system, causing a denial of service.
(CVE-2007-3739)

It was discovered that certain CIFS filesystem actions did not honor
the umask of a process. Local attackers could exploit this to gain
additional privileges. (CVE-2007-3740)

Wojciech Purczynski discovered that the Linux kernel ia32 syscall
emulation in x86_64 kernels did not correctly clear the high bits of
registers. Local attackers could exploit this to gain root privileges.
(CVE-2007-4573)