In the Linux kernel, the following vulnerability has been resolved:
net: mdio: unexport __init-annotated mdio_bus_init()
EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic.
modpost used to detect it, but it has been broken for a decade.
Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds.
There are two ways to fix it:
- Remove __init - Remove EXPORT_SYMBOL
I chose the latter for this case because the only in-tree call-site, drivers/net/phy/phy_device.c is never compiled as modular. (CONFIG_PHYLIB is boolean)
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.50-23.125Upgrade kernelUpgrade kernel-livepatch-5.10.126-117.518Upgrade python-perf-debuginfoUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade bpftool-debuginfoUpgrade kernel-livepatch-4.14.285-215.501Upgrade kernel-toolsUpgrade bpftoolUpgrade perf-debuginfo | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel | Jul 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perf | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-azure-fipsUpgrade linux-gcp-4.15Upgrade linux-aws-5.15Upgrade linux-hwe-5.4Upgrade linux-gcp-5.15Upgrade linux-azure-4.15Upgrade linux-awsUpgrade linux-realtimeUpgrade linux-azure-5.15Upgrade linux-azure-5.4Upgrade linux-hweUpgrade linux-intel-iotg-5.15Upgrade linux-oracleUpgrade linux-aws-5.4Upgrade linux-lowlatencyUpgrade linux-lowlatency-hwe-5.15Upgrade linux-hwe-5.15Upgrade linux-aws-fipsUpgrade linux-iotUpgrade linux-raspiUpgrade linux-ibmUpgrade linux-aws-hweUpgrade linux-azureUpgrade linux-kvmUpgrade linux-oracle-5.15Upgrade linux-gcpUpgrade linux-nvidiaUpgrade linux-oracle-5.4Upgrade linux-gcp-fipsUpgrade linux-ibm-5.4Upgrade linux-riscv-5.15Upgrade linux-bluefieldUpgrade linux-gkeUpgrade linux-gkeopUpgrade linux-fipsUpgrade linux-gcp-5.4Upgrade linux-raspi-5.4Upgrade linuxUpgrade linux-intel-iotg | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub