Linux Distros Unpatched Vulnerability : CVE-2026-53236

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: restrict SOATTACHFILTER to priv users This patch restricts the use of SOATTACHFILTER cBPF on TCP sockets to users with CAPNETADMIN capability. This blocks...

CVE-2026-48706

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.34.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, a vulnerability exists in Envoy's TCP StatsD sink TcpStatsdSink, where the thread-local flusher buffer can be overflowed by exceptionally long statistic...

CVE-2026-53183

A flaw was found in the Linux kernel's Multipath TCP MPTCP implementation. This vulnerability occurs because the TCP stack independently manages the TCP-level receive window, which can lead to an artificial inflation of the MPTCP receive window. A remote attacker could exploit this by sending...

CVE-2026-53236

A flaw was found in the Linux kernel's handling of TCP sockets. An unprivileged application can exploit this vulnerability by attaching a Berkeley Packet Filter BPF using the SOATTACHFILTER option. This allows the application to conduct a side-channel attack, leading to the leakage of sensitive T...

CVE-2026-53249

A flaw was found in the Linux kernel's IPv4 networking component. This vulnerability allows an unprivileged application to set specific IP options, namely Loose Source and Record Route LSRR and Strict Source and Record Route SSRR. By exploiting this, an attacker can force network packets to...

SUSE-SU-2026:2638-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

SUSE CVE-2026-53236

In the Linux kernel, the following vulnerability has been resolved: tcp: restrict SOATTACHFILTER to priv users This patch restricts the use of SOATTACHFILTER cBPF on TCP sockets to users with CAPNETADMIN capability. This blocks potential side-channel attack where an unprivileged application...

CVE-2026-13318

A server-side request forgery SSRF flaw was found in KubeVirt's virt-api port-forward handler. When processing a port-forward request to a VirtualMachineInstance VMI, virt-api reads the target IP from vmi.Status.Interfaces0.IP and passes it directly to net.Dial without validation. For VMIs using...

Oracle Linux 9 : kernel (ELSA-2026-27789)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-27789 advisory. - net/sched: fix pedit partial COW leading to page cache corruption Ivan Vecera RHEL-177392 CVE-2026-46331 - scsi: qla2xxx: Completely fix fcport doub...

kernel: tcp: fix potential race in tcp_v6_syn_recv_sock()

A flaw was found in the Linux kernel. A race condition exists in the TCP Transmission Control Protocol IPv6 Internet Protocol version 6 socket handling, specifically within the tcpv6synrecvsock function. This occurs because a child socket becomes visible in the TCP hash table before its...

kernel: nvmet-tcp: fix race between ICReq handling and queue teardown

A flaw was found in the Linux kernel's NVMe over TCP nvmet-tcp implementation. A race condition exists between the handling of an Initialization Connection Request ICReq and the teardown of a queue. A remote attacker, by sending an ICReq and immediately closing the connection, could trigger a...

CVE-2026-52999

A flaw was found in the Linux kernel's netfilter subsystem, specifically in the nfnetlinkosf module. When the NFOSFLOGLEVELALL option is configured, an out-of-bounds read vulnerability can occur during TCP option parsing. This issue can lead to incorrect data processing and logging failures,...

RLSA-2026:27789 Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: isotp: fix tx.buf use-after-free in isotpsendmsg CVE-2026-31474 kernel: mptcp: fix slab-use-after-free in inetlookupestablished CVE-2026-31669 kernel: xen/privcmd: fix double free vi...

SUSE-SU-2026:2630-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed wo...

EUVD-2026-39185

When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port and not the tls-auth-port or over over TCP over the regular...

CVE-2026-53236

In the Linux kernel, the following vulnerability has been resolved: tcp: restrict SOATTACHFILTER to priv users This patch restricts the use of SOATTACHFILTER cBPF on TCP sockets to users with CAPNETADMIN capability. This blocks potential side-channel attack where an unprivileged application...

UBUNTU-CVE-2026-53236

In the Linux kernel, the following vulnerability has been resolved: tcp: restrict SOATTACHFILTER to priv users This patch restricts the use of SOATTACHFILTER cBPF on TCP sockets to users with CAPNETADMIN capability. This blocks potential side-channel attack where an unprivileged application...

UBUNTU-CVE-2026-53260

In the Linux kernel, the following vulnerability has been resolved: tcp: Add preemptdisable,enablenested in reqskqueuehashreq. syzbot reported a weird reqsk-rskrefcnt underflow in inetcskreqskqueuedrop. The captured reqskput in inetcskreqskqueuedrop is called only when it successfully removes req...

UBUNTU-CVE-2026-53183

In the Linux kernel, the following vulnerability has been resolved: mptcp: allow subflow rcv wnd to shrink In MPTCP connection, the window field in the TCP header refers to the MPTCP-level rcvnxt and it's right edge should not move backward. Such constraint is enforced at DSS option generation...

CVE-2026-53236

CVE-2026-53236 affects the Linux kernel where a patch restricts SO_ATTACH_FILTER (cBPF) usage on TCP sockets to CAP_NET_ADMIN, mitigating a potential side-channel leaking TCP sequence/ACK data. Debian/Ubuntu entries show patches across newer kernel builds (e.g., Linux 6.1 series with 6.1.176-1~de...