CVE-2024-49977

net: stmmac: Fix zero-division error when disabling tc cbs

State: Published
Severity: Not scored
Published: Oct 21, 2024
Updated: Oct 15, 2026
Reserved: Oct 21, 2024

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	b4bca4722fda928810d024350493990de39f1e40 to before e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4cAffected 2145583e5995598f50d66f8710c86bb1e910ac46 to before b0da9504a528f05f97d926b4db74ff21917a33e9Affected 521d42a1c24d638241220d4b9fa7e7a0ed02b88e to before 5d43e1ad4567d67af2b42d3ab7c14152ffed25c6Affected a71b686418ee6bcb6d6365f7f6d838d9874d9c64 to before 03582f4752427f60817d896f1a827aff772bd31eAffected b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before e297a2bf56d12fd7f91a0c209eb6ea84361f3368Affected b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before 837d9df9c0792902710149d1a5e0991520af0f93Affected b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before 675faf5a14c14a2be0b870db30a70764df81e2dfAffected f01782804147a8c21f481b3342c83422c041d2c0Affected 5.10.221 to before 5.10.227Affected 5.15.162 to before 5.15.168Affected 6.1.96 to before 6.1.113Affected 6.6.36 to before 6.6.55Affected 6.9.7 to before 6.10Affected
LinuxLinux	6.10Affected before 6.10Not affected 5.10.227 through 5.10.Not affected 5.15.168 through 5.15.Not affected 6.1.113 through 6.1.Not affected 6.6.55 through 6.6.Not affected 6.10.14 through 6.10.Not affected 6.11.3 through 6.11.Not affected 6.12 and laterNot affected

Product

Versions

LinuxLinux

b4bca4722fda928810d024350493990de39f1e40 to before e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4cAffected
2145583e5995598f50d66f8710c86bb1e910ac46 to before b0da9504a528f05f97d926b4db74ff21917a33e9Affected
521d42a1c24d638241220d4b9fa7e7a0ed02b88e to before 5d43e1ad4567d67af2b42d3ab7c14152ffed25c6Affected
a71b686418ee6bcb6d6365f7f6d838d9874d9c64 to before 03582f4752427f60817d896f1a827aff772bd31eAffected
b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before e297a2bf56d12fd7f91a0c209eb6ea84361f3368Affected
b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before 837d9df9c0792902710149d1a5e0991520af0f93Affected
b8c43360f6e424131fa81d3ba8792ad8ff25a09e to before 675faf5a14c14a2be0b870db30a70764df81e2dfAffected
f01782804147a8c21f481b3342c83422c041d2c0Affected
5.10.221 to before 5.10.227Affected
5.15.162 to before 5.15.168Affected
6.1.96 to before 6.1.113Affected
6.6.36 to before 6.6.55Affected
6.9.7 to before 6.10Affected

LinuxLinux

6.10Affected
before 6.10Not affected
5.10.227 through 5.10.*Not affected
5.15.168 through 5.15.*Not affected
6.1.113 through 6.1.*Not affected
6.6.55 through 6.6.*Not affected
6.10.14 through 6.10.*Not affected
6.11.3 through 6.11.*Not affected
6.12 and laterNot affected

References

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