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Vulnerability · Published Oct 21, 2024 · Assigned by Linux

CVE-2024-49977net: stmmac: Fix zero-division error when disabling tc cbs

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 83.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.115-1DEBIAN-CVE-2024-49977
Debian:13linux6.11.4-1DEBIAN-CVE-2024-49977
Debian:14linux6.11.4-1DEBIAN-CVE-2024-49977
Ubuntu:22.04:LTSlinux5.15.0-127.137UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux6.8.0-54.56UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-aws5.15.0-1073.79UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-aws6.8.0-1023.25UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1023.25~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure5.15.0-1078.87UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-azure6.8.0-1025.30UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1025.30~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1078.87.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1014.15UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gcp5.15.0-1072.80UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-gcp6.8.0-1024.26UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1024.26~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gke5.15.0-1070.76UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-gke6.8.0-1019.23UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1056.63UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1006.8UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-57.59~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-ibm5.15.0-1066.69UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-ibm6.8.0-1022.22UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1023.23~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1071.77UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-kvm5.15.0-1070.75UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-127.137UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-54.56.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-54.56.1~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1068.69UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1022.25UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1022.25~22.04.2UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1022.25.2UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1032.32UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1020.20UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1024.24UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oracle5.15.0-1071.77UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-oracle6.8.0-1020.21UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1020.21~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-raspi5.15.0-1066.69UBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-raspi6.8.0-1019.23UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-riscv6.8.0-53.55.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-53.55.1~22.04.1UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-49977
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-49977
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1039.43UBUNTU-CVE-2024-49977

Affected products (as reported)

VendorProductVersions
Linux Linux b4bca4722fda928810d024350493990de39f1e40 – before e33fe25b1efe4f2e6a5858786dbc82ae4c44ed4c2145583e5995598f50d66f8710c86bb1e910ac46 – before b0da9504a528f05f97d926b4db74ff21917a33e9521d42a1c24d638241220d4b9fa7e7a0ed02b88e – before 5d43e1ad4567d67af2b42d3ab7c14152ffed25c6a71b686418ee6bcb6d6365f7f6d838d9874d9c64 – before 03582f4752427f60817d896f1a827aff772bd31eb8c43360f6e424131fa81d3ba8792ad8ff25a09e – before e297a2bf56d12fd7f91a0c209eb6ea84361f3368b8c43360f6e424131fa81d3ba8792ad8ff25a09e – before 837d9df9c0792902710149d1a5e0991520af0f93b8c43360f6e424131fa81d3ba8792ad8ff25a09e – before 675faf5a14c14a2be0b870db30a70764df81e2dff01782804147a8c21f481b3342c83422c041d2c0
Linux Linux 6.10

References