Exploitation observed; activity peaked at 4 mentions and remains active
Recommended action window: Immediate (within 24h)
NVD description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() Reject rt match rules whose addrnr exceeds IP6T_RT_HOPS. rt_mt6() expects addrnr to stay within the bounds of rtinfo->addrs[]. Validate addrnr during rule installation so malformed rules are rejected before the match logic can use an out-of-range value.
Priority
MEDIUM
Exploitation
ACTIVE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 1 product
| Date | Total | Labels |
|---|
| 2026-04-25 | 4 | Active Exploitation1Disclosure1Patch2 |
| 2026-04-26 | 1 | Patch1 |
A lot of offensive activities were identified targeting Linux Kernel (CVE-2026-31674) https://vuldb.com/vuln/359581/cti
Post summary
The passage reports that CVE‑2026‑31674 has seen significant exploitation activity targeting the Linux kernel, with no reference to PoC, tools, patches, or technical details.
CVE-2026-31674 In the Linux kernel, the following vulnerability has been resolved: netfilter https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-31674
Post summary
The CVE-2026-31674 vulnerability in the Linux kernel's netfilter component has been resolved, but no patch details or technical information are provided.
🪟 CVE-2026-31674: a “modest” netfilter IPv6 bug that can make kernel arrays trip over their shoelaces. If your Linux firewall runs in your Windows stack, patch now—don’t wait for the crash log. https://windowsforum.com/threads/cve-2026-31674-netfilter-ipv6-bug-why-windows-teams-must-patch-linux-kernels.415247/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernel #NetfilterIpv6 #FirewallSecurity https://t.co/oTWz0vkRaU
Post summary
The post alerts users to a netfilter IPv6 bug that causes kernel crashes and urges immediate patching to prevent potential failures.
CVE-2026-31674 In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() Reject rt match rules whose addrnr… https://www.cve.org/CVERecord?id=CVE-2026-31674
Post summary
CVE-2026-31674 is an issue in the Linux kernel's netfilter module involving oversized addrnr checks, and the CVE record indicates it has been resolved, implying a patch is available.
There is a new vulnerability with elevated criticality in Linux Kernel (CVE-2026-31674) https://vuldb.com/vuln/359581
Post summary
The post announces a new critical Linux Kernel vulnerability (CVE-2026-31674) and links to a database entry, but it provides no technical details, PoC, or exploitation information.
11 of 11 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | linux | linux_kernel | - | - | - |
| OS | linux | linux_kernel | 2.6.12 | - | - |
| OS | linux | linux_kernel | 2.6.12 | - | - |
| OS | linux | linux_kernel | 2.6.12 | - | - |
| OS | linux | linux_kernel | 2.6.12 | - | - |
| OS | linux | linux_kernel | 2.6.12 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |