High · published June 19, 2024
🔥 A sneaky error path in the Linux kernel leaves a door ajar for issues that could escalate out of control! ⚠️ Imagine a fire alarm that fails to alert the fire department because of a faulty circuit. If a critical component in the response system doesn’t trigger when it should, the whole building could be in jeopardy! If seg6_hmac_init() fails and the system doesn't properly unregister, it may lead to unexpected behavior in the kernel, potentially causing system instability or crashes. This could allow for exploitation of the system in unforeseen ways, creating a cascading failure that puts your environment at risk.
Imagine a fire alarm that fails to alert the fire department because of a faulty circuit. If a critical component in the response system doesn’t trigger when it should, the whole building could be in jeopardy! This vulnerability occurs in the Linux kernel's error handling path for the IPv6 segment routing when CONFIG_IPV6_SEG6_LWTUNNEL is not defined. If seg6_hmac_init() encounters an issue, the system fails to call genl_unregister_family(), which can lead to improper cleanup of resources.
If seg6_hmac_init() fails and the system doesn't properly unregister, it may lead to unexpected behavior in the kernel, potentially causing system instability or crashes. This could allow for exploitation of the system in unforeseen ways, creating a cascading failure that puts your environment at risk. To protect your systems, upgrade to the fixed kernel version that addresses this bug. Always ensure you have the latest security patches applied to your kernel to minimize vulnerabilities. Review your build configurations to avoid leaving potentially risky settings undefined. 🛡️ You've got this! With these updates, you'll keep your systems secure and stable! 🚀
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.10, < 4.19.316 | 4.19.316 |
| linux/linux_kernel | ≥ 4.20, < 5.4.278 | 5.4.278 |
| linux/linux_kernel | ≥ 5.5, < 5.10.219 | 5.10.219 |
| linux/linux_kernel | ≥ 5.11, < 5.15.161 | 5.15.161 |
| linux/linux_kernel | ≥ 5.16, < 6.1.93 | 6.1.93 |
| linux/linux_kernel | ≥ 6.2, < 6.6.33 | 6.6.33 |
| linux/linux_kernel | ≥ 6.7, < 6.8.12 | 6.8.12 |
| linux/linux_kernel | ≥ 6.9, < 6.9.3 | 6.9.3 |