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It is a bug for fscrypt_put_master_key_activeref() to see a NULL keyring. But it used to be possible due to the bug, now fixed, where fscrypt_destroy_keyring() was called before security_sb_delete(). To be consistent with how fscrypt_destroy_keyring() uses WARN_ON for the same issue, WARN and leak the fscrypt_master_key if the keyring is NULL instead of dereferencing the NULL pointer. This is a robustness improvement, not a fix. Link: https://lore.kernel.org/r/20230313221231.272498-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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| .. | ||
| bio.c | ||
| crypto.c | ||
| fname.c | ||
| fscrypt_private.h | ||
| hkdf.c | ||
| hooks.c | ||
| inline_crypt.c | ||
| Kconfig | ||
| keyring.c | ||
| keysetup_v1.c | ||
| keysetup.c | ||
| Makefile | ||
| policy.c | ||