platform/x86: dell-wmi-sysman: bound enumeration string aggregation
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: dell-wmi-sysman: bound enumeration string aggregation
populate_enum_data() aggregates firmware-provided value-modifier
and possible-value strings into fixed 512-byte struct members.
The current code bounds each individual source string but then
appends every string and separator with raw strcat() and no
remaining-space check.
Switch the aggregation loops to a bounded append helper and
reject enumeration packages whose combined strings do not fit
in the destination buffers.
[ij: add include]
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/3c34471c26abc52a37f5ad90949e2e4b8027eb14https://git.kernel.org/stable/c/5a04f9a36930792f6d64e28d43609e158d09b665https://git.kernel.org/stable/c/75c738d4f27fa18a2a033de153bd40302bde6a66https://git.kernel.org/stable/c/7b3dc1f764bf24eb99474a5de8173b0b43a8b071https://git.kernel.org/stable/c/90b118d264845f7aaf539ac49f7c75f1f29590e2https://git.kernel.org/stable/c/ba0843c1955864401295f7ba3b420afe19f2266dhttps://git.kernel.org/stable/c/c5683ca4949a514fbe656c6d0d08c4c126e21db9