CVE-2026-43025 netfilter: ctnetlink: ignore explicit helper on new expectations

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: ignore explicit helper on new expectations Use the existing master conntrack helper, anything else is not really supported and it just makes validation more complicated, so just ignore what helper userspace...

CVE-2026-43026 netfilter: ctnetlink: zero expect NAT fields when CTA_EXPECT_NAT absent

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: zero expect NAT fields when CTAEXPECTNAT absent ctnetlinkallocexpect allocates expectations from a non-zeroing slab cache via nfctexpectalloc. When CTAEXPECTNAT is not present in the netlink message, savedad...

EUVD-2026-24868

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea "netfilter: conntrack: do not dump other netns's conntrack entries via proc"...

CVE-2026-31496

Summary: CVE-2026-31496 affects the Linux kernel netfilter nf_conntrack_expect handling across network namespaces. The root cause is a failure to skip or isolate expectations that do not reside in the target netns, enabling a local user to access or view nf_conntrack_expect entries from other nam...

CVE-2026-31496 netfilter: nf_conntrack_expect: skip expectations in other netns via proc

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea "netfilter: conntrack: do not dump other netns's conntrack entries via proc"...

CVE-2026-31496 netfilter: nf_conntrack_expect: skip expectations in other netns via proc

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: skip expectations in other netns via proc Skip expectations that do not reside in this netns. Similar to e77e6ff502ea "netfilter: conntrack: do not dump other netns's conntrack entries via proc"...

CVE-2026-31414 netfilter: nf_conntrack_expect: use expect->helper

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrackexpect: use expect-helper Use expect-helper in ctnetlink and /proc to dump the helper name. Using nfcthelp without holding a reference to the master conntrack is unsafe. Use exp-master-helper in ctnetlink pa...

PT-2026-36443

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfilter component where the ctnetlink alloc expect function allocates expectations from a non-zeroing slab cache via nf ct expect alloc. When CTA EXPECT NAT is...

PT-2026-36442

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A slab-out-of-bounds read issue exists in the netfilter ctnetlink component. The problem occurs when userspace suggests a helper for a new expectation that differs from the existing mast...

Gamifying Cyber Governance: A Virtual Escape Room to Transform Cybersecurity Policy Education

Serious games are gaining popularity as effective teaching and learning tools, providing engaging, interactive, and practical experiences for students. Gamified learning experiences, such as virtual escape rooms, have emerged as powerful tools in bridging theory and practice, fostering deeper...

The Death of the Security Checkbox: BAS Is the Power Behind Real Defense

Security doesn't fail at the point of breach. It fails at the point of impact. That line set the tone for this year's Picus Breach and Simulation BAS Summit , where researchers, practitioners, and CISOs all echoed the same theme: cyber defense is no longer about prediction. It's about proof. When...

EUVD-2021-25988

Malware in sbrugna...

EUVD-2002-0060

Malware in sbrugna...

EUVD-2025-15209

Malicious code in bioql PyPI...

EUVD-2022-4625

Malicious code in bioql PyPI...

CVE-2025-39764

The CVE-2025-39764 entry concerns a Linux kernel netfilter issue: ctnetlink path dumpers initially kept an expectation object alive via refcounting, risking a refcounting bug (double-increment) when exp == last, leading to a memory leak. The patch removes refcounting for the expectation object an...

UBUNTU-CVE-2023-52927

In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nfctfindexpectation Currently nfconntrackin calling nfctfindexpectation will remove the exp from the hash table. However, in some scenario, we expect the exp not to be removed when the...

Imposter syndrome in cyber security

TL;DR Imposter syndrome is the belief that you are undeserving of your achievements Anyone can be affected by it There are ways to cope What is imposter syndrome? Imposter syndrome is the psychological pattern in which a person downplays their achievements and believes that they are secretly a...

kernel: netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftct: sanitize layer 3 and 4 protocol number in custom expectations The Linux kernel CVE team has assigned CVE-2024-26673 to this issue. Upstream advisory:...

Online Privacy and Overfishing

Microsoft recently caught state-backed hackers using its generative AI tools to help with their attacks. In the security community, the immediate questions werent about how hackers were using the tools that was utterly predictable, but about how Microsoft figured it out. The natural conclusion wa...