In the Linux kernel, the following vulnerability has been resolved:
ipmi: ipmb: validate write message length
ipmb_write() read message fields before validating the length byte. A zero or short write can read uninitialized stack bytes. A length smaller than the SMBus header underflows the block write length.
Require a non-empty buffer and the minimum IPMB request length. Also require the length byte plus payload before parsing the message.
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
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/53637506884dbd5c91a89b1a3547d99d80f8ed2c
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/5719431ca2b5fa26560bb38f6202f8b97fa3bbb0
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/60939bcda6f3f104ef456fdbf3cc5733c0720fb1
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a84c6e3d188f2c6e674910929eb790634299d6d5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7d66d54b974cff0a959e188af844d2d110422767
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8990c7f6bfc1e7689b7012a7d4d0efb9f07a9c89
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/94f8d20153e348c79bc14dc25f873470518892da
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e527cd4e80066e1ed070fdc7c705bde340cdcc62
416baaa9-dc9f-4396-8d5f-8c081fb06d67