NetSight
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high7.5

CVE-2004-2536

The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permis…

Impact

The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
Versions 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5

References