In the Linux kernel, the following vulnerability has been resolved:
ecryptfs: hold msg ctx list lock when cleaning daemon queue
ecryptfs_exorcise_daemon() drops queued messages from a dying daemon
without holding ecryptfs_msg_ctx_lists_mux, but
ecryptfs_msg_ctx_alloc_to_free() requires that lock.
Take the list lock while moving the queued contexts back to the free
list to avoid racing with other global msg ctx list users.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/956541efd125a10442f9514668bc5c852702c93b
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a
416baaa9-dc9f-4396-8d5f-8c081fb06d67