platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl
It is possible to peep kernel page's data by providing larger `insize`
in struct cros_ec_command[1] when invoking EC host commands.
Fix it by using zeroed memory.
[1]: https://elixir.bootlin.com/linux/v6.2/source/include/linux/platform_data/cros_ec_proto.h#L74
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/13493ad6a220cb3f6f3552a16b4f2753a118b633https://git.kernel.org/stable/c/a0d8644784f73fa39f57f72f374eefaba2bf48a0https://git.kernel.org/stable/c/b20cf3f89c56b5f6a38b7f76a8128bf9f291bbd3https://git.kernel.org/stable/c/eab28bfafcd1245a3510df9aa9eb940589956ea6https://git.kernel.org/stable/c/ebea2e16504f40d2c2bac42ad5c5a3de5ce034b4https://git.kernel.org/stable/c/f86ff88a1548ccf5a13960c0e7625ca787ea0993