In the Linux kernel, the following vulnerability has been resolved:
dmaengine: Fix possible use after free
In dma_release_channel(), check chan->device->privatecnt after call
dma_chan_put(). However, dma_chan_put() call dma_device_put() which could
release the last reference of the device if the DMA provider is already
gone and hence free it.
Fixes it by moving dma_chan_put() after the check.
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
Vulnerable Products 8
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
5.10.261
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
5.15.212
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
6.1.178
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
6.6.145
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
6.12.97
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
6.18.40
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
7.1.5
|
|
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
|
2.6.30
|
7.2-rc1
|
References 8
https://git.kernel.org/stable/c/444f96066937f3fdf0e79b53289cff223c7d638b
NVD
https://git.kernel.org/stable/c/ab438a9efb9042c79d2f8db28a326d55feb8591f
NVD
https://git.kernel.org/stable/c/9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce
NVD
https://git.kernel.org/stable/c/5876f38b67a309c00628942cb25679749b53b397
NVD
https://git.kernel.org/stable/c/3b0240483dc977dbec4f3bc7a5383d4691ecb625
NVD
https://git.kernel.org/stable/c/329ec20a86091d2a6e5b4fe507545e7d678a22a2
NVD
https://git.kernel.org/stable/c/0bc191050c3253da8ef4bfaf157c44efed6e22cd
NVD
https://git.kernel.org/stable/c/92f853f0645aebf1d05d333e97ab7c342ace1892
NVD