Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: tcp: Prevent concurrent execution of tcpskexitbatch It is possible that two threads call tcpskexitbatch concurrently. This could happen either from the cleanupnetworkqueue or from a task that fails to clone a new netns. In the...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

Linux Distros Unpatched Vulnerability : CVE-2026-74289

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv4: fib: Don't dump dying fibinfo in fibleafnotify. syzbot reported use-after-free in nsimfib4prepareevent. 0 The problem is that the following functions call...

AZL-93803 CVE-2026-64525 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: xfrm: move policybydst RCU sync from per-netns .exit to .preexit The struct pernetoperations docstring in include/net/netnamespace.h explicitly warns against blocking RCU primitives in .exit handlers: Exit methods using blocking...

SUSE CVE-2026-53094

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stale offload-prog pointer after constant blinding When a dev-bound-only BPF program BPFFXDPDEVBOUNDONLY undergoes JIT compilation with constant blinding enabled bpfjitharden = 2, bpfjitblindconstants clones the program...

CVE-2026-46116: Use After Free

In the Linux kernel, the following vulnerability has been resolved: xfrm: defensively unhash xfrmstate lists in xfrmstatedelete KASAN reproduces a slab-use-after-free in xfrmstatedelete's hlistdelrcu calls under syzkaller load on linux-6.12.y stable reproduced on 6.12.47, also reachable via the...

SUSE-SU-2026:1297-1 Security update for the Linux Kernel (Live Patch 71 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.269 fixes various security issues The following security issues were fixed: - CVE-2023-53794: cifs: fix session state check in reconnect to avoid use-after-free issue bsc1255235. - CVE-2025-39973: i40e: add validation for ringlen param...

SUSE-SU-2026:21058-1 Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-31.1 fixes various security issues The following security issues were fixed: - CVE-2025-39973: i40e: add validation for ringlen param bsc1252036. - CVE-2025-40018: ipvs: Defer ipvsftp unregister during netns cleanup bsc1252689. -...

SUSE-SU-2026:21087-1 Security update for the Linux Kernel RT (Live Patch 9 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-33.1 fixes various security issues The following security issues were fixed: - CVE-2025-39973: i40e: add validation for ringlen param bsc1252036. - CVE-2025-40018: ipvs: Defer ipvsftp unregister during netns cleanup bsc1252689. -...

SUSE-SU-2026:21055-1 Security update for the Linux Kernel RT (Live Patch 11 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-32.1 fixes various security issues The following security issues were fixed: - CVE-2025-39973: i40e: add validation for ringlen param bsc1252036. - CVE-2025-40018: ipvs: Defer ipvsftp unregister during netns cleanup bsc1252689. -...

SUSE CVE-2025-68768

In the Linux kernel, the following vulnerability has been resolved: inet: frags: flush pending skbs in fqdirpreexit We have been seeing occasional deadlocks on pernetopsrwsem since September in NIPA. The stuck task was usually modprobe often loading a driver like ipvlan, trying to take the lock a...

CVE-2025-40018: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipvs: Defer ipvsftp unregister during netns cleanup On the netns cleanup path, ipvsftpexit may unregister ipvsftp before connections with valid cp-app pointers are flushed, leading to a use-after-free. Fix this by introducing a...

CVE-2025-38721

CVE-2025-38721 affects the Linux kernel netfilter ctnetlink table dump path. A reference count leak in ctnetlink_dump_table() can occur if res ct_general) only when ct != last, and a cookie-based workaround is mentioned as an alternative. The Astra Linux bulletin confirms the same vulnerability i...

kernel: tipc: Fix use-after-free in tipc_conn_close()

In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipcconnclose. syzbot reported a null-ptr-deref in tipcconnclose during netns dismantle. 0 tipctopsrvstop iterates tipcnetnet-topsrv-connidr and calls tipcconnclose for each tipcconn. The problem is th...

CVE-2025-38500: Use After Free

In the Linux kernel, the following vulnerability has been resolved: xfrm: interface: fix use-after-free after changing collectmd xfrm interface collectmd property on xfrm interfaces can only be set on device creation, thus xfrmichangelink should fail when called on such interfaces. The check to...

CVE-2025-38032

In the Linux kernel, the following vulnerability has been resolved: mr: consolidate the ipmrcanfreetable checks. Guoyu Yin reported a splat in the ipmr netns cleanup path: WARNING: CPU: 2 PID: 14564 at net/ipv4/ipmr.c:440 ipmrfreetable net/ipv4/ipmr.c:440 inline WARNING: CPU: 2 PID: 14564 at...

CVE-2025-38032

In the Linux kernel, the following vulnerability has been resolved: mr: consolidate the ipmrcanfreetable checks. Guoyu Yin reported a splat in the ipmr netns cleanup path: WARNING: CPU: 2 PID: 14564 at net/ipv4/ipmr.c:440 ipmrfreetable net/ipv4/ipmr.c:440 inline WARNING: CPU: 2 PID: 14564 at...

PT-2025-25807

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.14.0 Description A vulnerability has been resolved in the Linux kernel. The issue was reported by Guoyu Yin, who found a splat in the ipmr netns cleanup path. The vulnerability is related to the ipmr can free...

CVE-2025-38032: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mr: consolidate the ipmrcanfreetable checks. Guoyu Yin reported a splat in the ipmr netns cleanup path: WARNING: CPU: 2 PID: 14564 at net/ipv4/ipmr.c:440 ipmrfreetable net/ipv4/ipmr.c:440 inline WARNING: CPU: 2 PID: 14564 at...

CVE-2022-49917

CVE-2022-49917 affects the Linux kernel IPVS subsystem (ip_vs_app_net_cleanup and ip_vs_app_net_init). If ip_vs_app fails to be created during init, removal still proceeds, causing the ip_vs_app entry to be missing and a WARNING in fs/proc/generic.c: remove_proc_entry. The issue is demonstrated b...