NetSight
IP …
high7.8

CVE-2020-36791

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched…

Impact

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.4.214 before 4.4.218
from 4.9.214 before 4.9.218
from 4.14.171 before 4.14.175
from 4.19.103 before 4.19.114
from 5.4.19 before 5.4.29
from 5.5.3 before 5.5.14

Weakness classification

CWE-125

References