Astra Linux – Vulnerability in Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The commit mutex should not be released during the critical section between nftgcseqBegin and nftgcseqEnd. Otherwise, the async GC worker could collect expired objects and obtain the released commit lock with...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconncount: The cleanup limit for connections has been increased to 64. After the optimization to perform only one garbage collection per jiffy, a new problem emerged. If more than 8 new connections are tracked per...

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

A use-after-free vulnerability exists in the netfilter component of the Linux kernel’s nftables module, which can be exploited to achieve local privilege escalation. The nftpipapowalk function does not skip inactive elements during the set walk operation, which can result in double deactivation o...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Unconditionally flushes pending work before the notifier syzbot reports: KASAN: Slab-uaf in nftctxupdate, include/net/netfilter/nftables.h: 1831 KASAN: Slab-uaf in nftcommitrelease,...

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

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkqueue: acquire rcureadlock in instancedestroyrcu syzbot reported that nfreinject could be called without rcureadlock : WARNING: suspicious RCU usage 6.9.0-rc7-syzkaller-02060-g5c1672705a1a 0 Not tainted...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Do not compare internal table flags during updates. If a table update does not modify the flags, skip the transaction...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Failure to set the dormant flag on the hook register We need to set the dormant flag again if we fail to register the hooks. During memory pressure, hook registration may fail, resulting in a table being...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: fixed a percpu memory leak in nftablesaddchain. It seems that the percpu memory issue related to chain statistics began to occur after the commit 3bc158f8d0330f0a “netfilter: nftables: mapping basechain...

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

A out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 netfilter: nftables: Reject tables of unsupported family. While creating a new netfilter table, the lack of a safeguard against invalid nftables family pf values within the nftablesnewtable function...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A issue was discovered in net/netfilter/nftablesapi.c within the Linux kernel prior to version 5.19.6. A denial of service can occur when binding to an already bound chain...

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

In the Linux kernel, the following vulnerability has been resolved: netfilter: socket: Lookup orig tuple for IPv6 SNAT The nfsklookupslowv4 function performs the conntrack lookup for IPv4 packets in order to restore the original 5-tuple in case of SNAT, so that the correct socket if any can be...

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

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables – Use a timestamp to check for set element timeout. A timestamp field was added at the beginning of the transaction; it is stored in the nftablespernetns area. The .insert, .deactivate, and syncgc functions...

PT-2026-86192

Name of the Vulnerable Software and Affected Versions Linux Kernel affected versions not specified Description An issue exists in the IPVS IP Virtual Server component where checksum validations are missing or incorrect for certain packet types. Specifically, the ip vs in icmp v6 function fails to...

GO-2026-6316 free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints in github.com/free5gc/free5gc

free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints in github.com/free5gc/free5gc...

Improper Input Validation

github.com/free5gc/free5gc is vulnerable to improper input validation. The vulnerability is due to insufficient validation of NF Profile data, which allows an attacker with SBI access to submit malicious profiles containing attacker-controlled network-function endpoints, causing them to be...

GHSA-X8MJ-6P3Q-G5PP free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

Summary free5GC NRF Docker image free5gc-fuzz:latest accepts NF registration requests without validating any field constraints against 3GPP TS 29.510, allowing unauthenticated attackers to inject fake NF profiles with arbitrary service endpoint IP addresses. All 17 constraint violations tested UU...

free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

Summary free5GC NRF Docker image free5gc-fuzz:latest accepts NF registration requests without validating any field constraints against 3GPP TS 29.510, allowing unauthenticated attackers to inject fake NF profiles with arbitrary service endpoint IP addresses. All 17 constraint violations tested UU...

EUVD-2026-67835

free5GC is an open-source implementation of the 5G core network. In 4.2.2 and earlier, the NRF RegisterNFInstance handler at PUT /nnrf-nfm/v1/nf-instances/nfInstanceID accepts NF Profiles without enforcing UUID format, nfStatus enum values, heartBeatTimer ranges, mandatory profile fields, or...

CVE-2026-55068 free5GC: NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

free5GC is an open-source implementation of the 5G core network. In 4.2.2 and earlier, the NRF RegisterNFInstance handler at PUT /nnrf-nfm/v1/nf-instances/nfInstanceID accepts NF Profiles without enforcing UUID format, nfStatus enum values, heartBeatTimer ranges, mandatory profile fields, or...

PT-2026-82968

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf conntrack expect: use conntrack GC to reap expectations This patch replaces the timer API by GC worker approach for expectations, as it already happened in many other subsystems. Use the existing conntrack GC worker...