The shm_get_stat function in ipc/shm.c in the shm subsystem in the Linux kernel prior to 2.6.28.5, when CONFIG_SHMEM is disabled, misinterprets the data type of an inode, which allows local users to cause a denial of service (system hang) via an SHM_INFO shmctl call, as demonstrated by running the ipcs program.
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linux linux kernel |