CVE-2023-52834: high-severity vulnerability in Linux
atl1c: Work around the DMA RX overflow issue
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.7%
exploitation probability
0.7%top 49% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
atl1c: Work around the DMA RX overflow issue
This is based on alx driver commit 881d0327db37 ("net: alx: Work around
the DMA RX overflow issue").
The alx and atl1c drivers had RX overflow error which was why a custom
allocator was created to avoid certain addresses. The simpler workaround
then created for alx driver, but not for atl1c due to lack of tester.
Instead of using a custom allocator, check the allocated skb address and
use skb_reserve() to move away from problematic 0x...fc0 address.
Tested on AR8131 on Acer 4540.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxRelated CVEs — Linux
In the same product, most dangerous first.
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References
https://git.kernel.org/stable/c/32f08b7b430ee01ec47d730f961a3306c1c7b6fbhttps://git.kernel.org/stable/c/54a6152da4993ec8e4b53dc3cf577f5a2c829afahttps://git.kernel.org/stable/c/57e44ff9c2c9747b2b1a53556810b0e5192655d6https://git.kernel.org/stable/c/86565682e9053e5deb128193ea9e88531bbae9cfhttps://git.kernel.org/stable/c/c29a89b23f67ee592f4dee61f9d7efbf86d60315