In the Linux kernel, the following vulnerability has been resolved:
ipmi: Add limits to event and receive message requests
The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time.
In addition, an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck, it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck.
This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general issue of a BMC that won't stop saying it has data.
This has been there from the beginning of the driver. It's not a bug per-se, but it is accounting for bugs in BMCs.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 2.6.12.1 | 5.10.258 |
| linux / linux_kernel | 5.11 | 5.15.209 |
| linux / linux_kernel | 5.16 | 6.1.175 |
| linux / linux_kernel | 6.2 | 6.6.140 |
| linux / linux_kernel | 6.7 | 6.12.88 |
| linux / linux_kernel | 6.13 | 6.18.30 |
| linux / linux_kernel | 6.19 | 7.0.7 |
| linux / linux_kernel | 2.6.12 | 2.6.12.x |
| linux / linux_kernel | 2.6.12-rc2 | 2.6.12-rc2.x |
| linux / linux_kernel | 2.6.12-rc3 | 2.6.12-rc3.x |
| linux / linux_kernel | 2.6.12-rc4 | 2.6.12-rc4.x |
| linux / linux_kernel | 2.6.12-rc5 | 2.6.12-rc5.x |
| linux / linux_kernel | 7.1-rc1 | 7.1-rc1.x |
| linux / linux_kernel | 7.1-rc2 | 7.1-rc2.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.