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THREATINT
PUBLISHED

CVE-2024-49977

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



AssignerLinux
Reserved2024-10-21
Published2024-10-21
Updated2024-10-22

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.

Product status

Default status
unaffected

b4bca4722fda before e33fe25b1efe
affected

2145583e5995 before b0da9504a528
affected

521d42a1c24d before 5d43e1ad4567
affected

a71b686418ee before 03582f475242
affected

b8c43360f6e4 before e297a2bf56d1
affected

b8c43360f6e4 before 837d9df9c079
affected

b8c43360f6e4 before 675faf5a14c1
affected

Default status
affected

6.10
affected

Any version before 6.10
unaffected

5.10.227
unaffected

5.15.168
unaffected

6.1.113
unaffected

6.6.55
unaffected

6.10.14
unaffected

6.11.3
unaffected

6.12-rc1
unaffected

References

https://git.kernel.org/stable/c/e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c

https://git.kernel.org/stable/c/b0da9504a528f05f97d926b4db74ff21917a33e9

https://git.kernel.org/stable/c/5d43e1ad4567d67af2b42d3ab7c14152ffed25c6

https://git.kernel.org/stable/c/03582f4752427f60817d896f1a827aff772bd31e

https://git.kernel.org/stable/c/e297a2bf56d12fd7f91a0c209eb6ea84361f3368

https://git.kernel.org/stable/c/837d9df9c0792902710149d1a5e0991520af0f93

https://git.kernel.org/stable/c/675faf5a14c14a2be0b870db30a70764df81e2df

cve.org CVE-2024-49977

nvd.nist.gov CVE-2024-49977

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