kernel: xsk: check IFF_UP earlier in Tx path

In the Linux kernel, the following vulnerability has been resolved: xsk: check IFFUP earlier in Tx path Xsk Tx can be triggered via either sendmsg or poll syscalls. These two paths share a call to common function xskxmit which has two sanity checks within. A pseudo code example to show the two...

RHEL 9 : kernel-rt (RHSA-2026:1443)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:1443 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirement...

OPENSUSE-RU-2026:20161-1 Recommended update for hauler

This update for hauler fixes the following issues: Changes in hauler: - Update to version 1.4.1 bsc1256546, CVE-2026-22772: fixed typos for containerd imports 493 fix and support containerd imports of hauls 492 bump github.com/sigstore/fulcio 489 - Update to version 1.4.0: added/updated logging f...

CVE-2021-47901

Dirsearch 0.4.1 contains a CSV injection vulnerability when using the --csv-report flag that allows attackers to inject formulas through redirected endpoints. Attackers can craft malicious server redirects with comma-separated paths containing Excel formulas to manipulate the generated CSV report...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005180)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005180 advisory. In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix slab-use-after-free due to dangling pointer dqipriv When mounting ocfs2 and then...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005058)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005058 advisory. In the Linux kernel, the following vulnerability has been resolved: mmc: sdhci-msm: pervent access to suspended controller Generic sdhci code registers LED device an...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005158)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005158 advisory. In the Linux kernel, the following vulnerability has been resolved: RDMA/iwcm: Fix WARNING:atkernel/workqueue.c:checkflushdependency In the commit aee2424246f9...

libpng: LIBPNG buffer overflow

A buffer overflow flaw has been discovered in libpng. An out-of-bounds read vulnerability exists in pngimagereadcomposite when processing palette images with PNGFLAGOPTIMIZEALPHA enabled. The palette compositing code in pnginitreadtransformations incorrectly applies background compositing during...

CVE-2026-23005

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in guest XSAVE state whenever XFDi=1 When loading guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved or to be restored XSTATEBV...

CVE-2026-23005 x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in guest XSAVE state whenever XFDi=1 When loading guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved or to be restored XSTATEBV...

CVE-2026-23005 x86/fpu: Clear XSTATE_BV[i] in guest XSAVE state whenever XFD[i]=1

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in guest XSAVE state whenever XFDi=1 When loading guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved or to be restored XSTATEBV...

CVE-2026-23005

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in guest XSAVE state whenever XFDi=1 When loading guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved or to be restored XSTATEBV...

CVE-2026-23005

In the Linux kernel, the following vulnerability has been resolved: x86/fpu: Clear XSTATEBVi in guest XSAVE state whenever XFDi=1 When loading guest XSAVE state via KVMSETXSAVE, and when updating XFD in response to a guest WRMSR, clear XFD-disabled features in the saved or to be restored XSTATEBV...

CVE-2026-D0cker

CVE-2026-Pending: Container Escape via runC maskPaths Vunlerab...

CVE-2026-24138

FOG is a free open-source cloning/imaging/rescue suite/inventory management system. Versions 1.5.10.1754 and below contain an unauthenticated SSRF vulnerability in getversion.php which can be triggered by providing a user-controlled url parameter. It can be used to fetch both internal websites an...

Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion via the lookuphandlecname function when processing an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonical name are identical. An attacker can cause a crash and exhaust the...

CVE-2026-24401

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions 0.9rc2 and below, avahi-daemon can be crashed via a segmentation fault by sending an unsolicited mDNS response containing a recursive CNAME record, where the alias and canonica...

CTF for Education

In this paper, we take a close look at how CTF can be used in cybersecurity education. We divide the CTF competitions into four different categories, which are attack-based CTFs, defense-based CTFs, jeopardy CTFs and gamified and wargames CTFs. We start our analysis by summarizing the main...

UBUNTU-CVE-2026-22980

In the Linux kernel, the following vulnerability has been resolved: nfsd: provide locking for v4endgrace Writing to v4endgrace can race with server shutdown and result in memory being accessed after it was freed - reclaimstrhashtbl in particularly. We cannot hold nfsdmutex across the nfsd4endgrac...

CVE-2026-22980

The CVE-2026-22980 issue is confirmed to affect the Linux kernel and is addressed by a patch that fixes a race between v4_end_grace writes and server shutdown. The fix introduces two new fields in the nfsd network context: client_tracking_active (protected by nn->client_lock) and grace_end_for...