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48ec02cc77
commit 94c4554ba07adbdde396748ee7ae01e86cf2d8d7 upstream. There appears to be a race between: (1) key_gc_unused_keys() which frees key->security and then calls keyring_destroy() to unlink the name from the name list (2) find_keyring_by_name() which calls key_permission(), thus accessing key->security, on a key before checking to see whether the key usage is 0 (ie. the key is dead and might be cleaned up). Fix this by calling ->destroy() before cleaning up the core key data - including key->security. Reported-by: Petr Matousek <pmatouse@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> [lizf: Backported to 3.4: adjust indentation] Signed-off-by: Zefan Li <lizefan@huawei.com> |
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.. | ||
encrypted-keys | ||
compat.c | ||
gc.c | ||
internal.h | ||
key.c | ||
keyctl.c | ||
keyring.c | ||
Makefile | ||
permission.c | ||
proc.c | ||
process_keys.c | ||
request_key.c | ||
request_key_auth.c | ||
sysctl.c | ||
trusted.c | ||
trusted.h | ||
user_defined.c |