ScreenOff

ScreenOff CVE-2026-52910 kernel crash poc. ref: https://github.com/5unkn0wn/security-research/tree/CVE-2026-52910ltscosmitigation what socket + SOATTACHREUSEPORTCBPF + setsockopt race. timerfd/epoll callback storm slows down the receive path. replace the cBPF filter while the old prog is still in...

cve-2026-52910-poc

CVE-2026-52910 — reuseport cBPF use-after-free reproducer A race reproducer and stress toolkit for CVE-2026-52910 , a use-after-free UAF in the Linux kernel's handling of classic BPF cBPF reuseport selector programs , fixed upstream by commit "bpf: Free reuseport cBPF prog after RCU grace period"...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Fixed a nullptrderef issue in reuseportaddsock. syzbot reported a nullptrderef while accessing sk2-skreuseportcb in reuseportaddsock. The repro first creates a listener with SOREUSEPORT. Then, it creates another listener...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed the memory leak in bpfskselectreuseport As pointed out in the original comment, a lookup in sockmap can return a TCP ESTABLISHED socket. Such a TCP socket may have had SOATTACHREUSEPORTEBPF set before it became...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: tcp: Call skdataready after listener migration When inetcsklistenstop migrates an established child socket from a closing listener to another socket within the same SOREUSEPORT group, the target listener receives a new...

Rocky Linux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc (ALMALINUX9.6:CLSA-2026:1785241895)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1785241895 advisory. - In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that...

CentOS Linux 7 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python (CENTOS7:CLSA-2026:1785409943)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1785409943 advisory. - In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases t...

CentOS Linux 8 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (CENTOS-STREAM8:CLSA-2026:1785241157)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1785241157 advisory. - In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that...

AlmaLinux 9.2 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (ALMALINUX9.2:CLSA-2026:1786008652)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786008652 advisory. - In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increas...

Exploit for Out-of-bounds Read in Linux Linux_Kernel

Linux container escape PoCs Target-specific proof-of-concept...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: The reuseport cBPF prog is freed after the RCU grace period. Eulgyu Kim reported the issue below with a reproduction example. The reproduction example sets up a UDP reuseport group with a cBPF prog and replaces it with a new...

Container_escape

Linux container escape PoCs Target-specific proof-of-concept...

CVE-2026-74696 tcp: fix TFO max_qlen accounting across reuseport migration

In the Linux kernel, the following vulnerability has been resolved: tcp: fix TFO maxqlen accounting across reuseport migration A listener's TCPFASTOPEN maxqlen stops being accurate and lets through far more pending Fast Open requests than it was configured for. This only shows up with SOREUSEPORT...

CVE-2026-74696

CVE-2026-74696 is a denial-of-service vulnerability in the Linux kernel's TCP Fast Open (TFO) implementation. The root cause is an accounting error in fastopenq.qlen during SO_REUSEPORT listener migration : when a listener is closed and its pending TFO children are handed to a surviving listener,...

CVE-2026-74696: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tcp: fix TFO maxqlen accounting across reuseport migration A listener's TCPFASTOPEN maxqlen stops being accurate and lets through far more pending Fast Open requests than it was configured for. This only shows up with SOREUSEPORT...

PT-2026-79701

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the TCP Fast Open TFO implementation where the max qlen accounting for a listener becomes inaccurate during SO REUSEPORT listener migration. When a listener is closed,...

Linux Distros Unpatched Vulnerability : CVE-2026-74696

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: fix TFO maxqlen accounting across reuseport migration A listener's TCPFASTOPEN maxqlen stops being accurate and lets through far more pending Fast Open...

SUSE CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

Linux Distros Unpatched Vulnerability : CVE-2026-50252

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS...

CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...