In the Linux kernel, the following vulnerability has been resolved:
dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK
The DONE_INT_MASK and ABORT_INT_MASK registers are shared by all DMA
channels, and modifying them requires a read-modify-write sequence.
Because this operation is not atomic, concurrent calls to
dw_edma_v0_core_start() can introduce race conditions if two channels
update these registers simultaneously.
Add a spinlock to serialize access to these registers and prevent race
conditions.
[den: update dw_edma.lock comment]
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/1553ca96e9df158d8f37137cf4bf5fb0dc981d94
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2247cc25a91fb1b5b86586ed55fdd5b725a7477c
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3ee0f478bb29b4ee892b178179a9a76ddd194149
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8ffba0171c6bbce5f093c6dba5a02c0805b31203
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f60c7463d44fbc1585d247d0bd6976f7a1099472
416baaa9-dc9f-4396-8d5f-8c081fb06d67