| Description: | In the Linux kernel, the following vulnerability has been resolved:
cachefiles: fix memory leak in cachefiles_add_cache() The following
memory leak was reported after unbinding /dev/cachefiles:
==================================================================
unreferenced object 0xffff9b674176e3c0 (size 192): comm
"cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes):
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace
(crc ea38a44b): [] kmem_cache_alloc+0x2d5/0x370
[] prepare_creds+0x26/0x2e0 []
cachefiles_determine_cache_security+0x1f/0x120 []
cachefiles_add_cache+0x13c/0x3a0 []
cachefiles_daemon_write+0x146/0x1c0 []
vfs_write+0xcb/0x520 [] ksys_write+0x69/0xf0
[] do_syscall_64+0x72/0x140 []
entry_SYSCALL_64_after_hwframe+0x6e/0x76
================================================================== Put
the reference count of cache_cred in cachefiles_daemon_unbind() to fix
the problem. And also put cache_cred in cachefiles_add_cache() error
branch to avoid memory leaks.
|
