CVE-2007-4573

The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.

🔗 References (78)

• secalert@redhathttp://fedoranews.org/updates/FEDORA-2007-229.shtml
• secalert@redhathttp://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35.3
• secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
• secalert@redhathttp://lkml.org/lkml/2007/9/21/512
• secalert@redhathttp://lkml.org/lkml/2007/9/21/513
• secalert@redhathttp://marc.info/?l=full-disclosure&m=119062587407908&w=2
• secalert@redhathttp://secunia.com/advisories/26917
• secalert@redhathttp://secunia.com/advisories/26919
• secalert@redhathttp://secunia.com/advisories/26934
• secalert@redhathttp://secunia.com/advisories/26953
• secalert@redhathttp://secunia.com/advisories/26955
• secalert@redhathttp://secunia.com/advisories/26978
• secalert@redhathttp://secunia.com/advisories/26994
• secalert@redhathttp://secunia.com/advisories/26995
• secalert@redhathttp://secunia.com/advisories/27212