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CVE-2024-49977

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix zero-division error when disabling tc cbs The commit b8c43360f6e4 ("net: s…

Impact

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix zero-division error when disabling tc cbs The commit b8c43360f6e4 ("net: stmmac: No need to calculate speed divider when offload is disabled") allows the "port_transmit_rate_kbps" to be set to a value of 0, which is then passed to the "div_s64" function when tc-cbs is disabled. This leads to a zero-division error. When tc-cbs is disabled, the idleslope, sendslope, and credit values the credit values are not required to be configured. Therefore, adding a return statement after setting the txQ mode to DCB when tc-cbs is disabled would prevent a zero-division error.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.10.221 before 5.10.227
from 5.15.162 before 5.15.168
from 6.1.96 before 6.1.113
from 6.6.36 before 6.6.55
from 6.9.7 before 6.10
from 6.10 before 6.10.14

Weakness classification

CWE-369

References