serial: amba-pl011: synchronize DMA teardown
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
serial: amba-pl011: synchronize DMA teardown
dmaengine_terminate_all() does not wait for a running callback, so the TX
callback can still touch the TX buffer after it is freed. The RX poll
timer reads the RX buffers without the port lock.
Switch to dmaengine_terminate_sync() and delete the RX timer before
freeing the buffers.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/440915499231e9db1c361aa45bb702e8fd3b4a32https://git.kernel.org/stable/c/44bd0ecc3444882d08ecfbc2b2418d2f463d3186https://git.kernel.org/stable/c/5974cb66681eac367107b05924744d7e3b49d41chttps://git.kernel.org/stable/c/9f6989e477f03a4721d34bb4b09b17accd40283ehttps://git.kernel.org/stable/c/a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76ehttps://git.kernel.org/stable/c/c8c8e895f65fbf71ea6224e27cf8dab91b776e0dhttps://git.kernel.org/stable/c/f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03https://git.kernel.org/stable/c/fdfb46c387241b4eddd36d746793764413285913