Description
The (1) sys32_mremap function in arch/sparc64/kernel/sys_sparc32.c, the (2) sparc_mmap_check function in arch/sparc/kernel/sys_sparc.c, and the (3) sparc64_mmap_check function in arch/sparc64/kernel/sys_sparc.c, in the Linux kernel before 2.6.25.4, omit some virtual-address range (aka span) checks when the mremap MREMAP_FIXED bit is not set, which allows local users to cause a denial of service (panic) via unspecified mremap calls, a related issue to CVE-2008-2137.
References
- 33836 vdb-entry
- ADV-2008-1655 vdb-entry
- USN-751-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.4
- linux-kernel-virtual-address-dos(48710) vdb-entry
- [linux-kernel] 20080513 [patch 25/37] sparc: Fix mremap address range validation. mailing-list
- 1020120 vdb-entry
- 30258 third-party-advisory