Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: bridge: switchdev: Skip MDB replays of deferred events on offload Before this change, the generation of the list of MDB events to replay competed with the creation of new group memberhips, either through the IGMP/MLD snoopin...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: afnetlink: Fixed an out-of-bounds shift in the group mask calculation When a netlink message is received, netlinkrecvmsg fills in the address of the sender. One of the fields is the 32-bit bitfield nlgroups, which carries the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: IGMP: Fixed data races related to sysctligmpqrv. When reading sysctligmpqrv, it can be changed concurrently. Therefore, we need to add READONCE to its readers. This test can be incorporated into a helper module; such changes...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: net: ipv4: Fix memory leak in ipmcadd1src BUG: Memory leak Unreferenced object: 0xffff888101bc4c00 size 32 Command: “syz-executor527”, PID 360, jiffies 4294807421 age 19.329 seconds Hex dump first 32 bytes: 00 00 00 00 00 00 00 0...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bridge: mcast: Fixed a use-after-free during router port configuration. The bridge maintains a global list of ports behind which a multicast router resides. This list is consulted during forwarding to ensure that multicast packet...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ipmr,ip6mr: acquiring RTNL before calling ip6mrfreetable on a failure path The ip6mrfreetable function can only be called under an RTNL lock. RTNL: Assertion failed at net/core/dev.c 10367 WARNING: CPU: 1 PID: 5890 at...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: Avoid out-of-bound access in sja1105initl2policing The SJA1105 family has 45 L2 policing table entries SJA1105MAXL2POLICINGCOUNT, and the SJA1110 has 110 entries SJA1110MAXL2POLICINGCOUNT. However, simply...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: mcast: fixed a data race in ipv6mcdown / mldifcwork. idev-mcifccount can be written without proper locking. Originally reported by syzbot 1. This issue was fixed by encapsulating calls to mldifcstopwork and mldgqstopwork...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: removed one synchronizenet call from ipv6mcdown. As discussed in previous discussions commit 2d3916f31891 “ipv6: fix skb drops in igmp6eventquery and igmp6eventreport”, the synchronizenet call in ipv6mcdown is not...

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

In the Linux kernel, the following vulnerabilities have been resolved: - In net: The variable sk-skfamily was read once in the function skmcloop. - syzbot is frequently using IPV6ADDRFORM; it managed to trigger the WARNONONCE1 function in skmcloop. We still have many more similar issues that need...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: Ensure that we call ipv6mcdown at most once. There are two reasons why addrconfnotify is called with NETDEVDOWN: Either the network device is actually going down, or IPv6 was disabled on the interface. If either of the...

Astra Linux – Vulnerability in atftp

There is an exploitable denial-of-service vulnerability in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests triggers an assert call, resulting in a denial-of-service attack. An attacker can send a sequence of malicious packets...

kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning

A flaw was found in the Linux kernel's ixgbevf network driver. This vulnerability, a use-after-free, occurs when the driver attempts to process network packets for a specific multicast workaround. An attacker could potentially exploit this by sending specially crafted network traffic, which may...

SUSE-SU-2026:4168-1 Security update for the Linux Kernel RT (Live Patch 19 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.72 fixes various security issues: The following security issues were fixed: - CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device destruction bsc1275458. - CVE-2026-68138: net/sched: serialize qdiscrtablist...

kernel: net: bridge: stop fast-leave after deleting a port group

A flaw was found in the Linux kernel's network bridge module. When handling multicast fast-leave, a vulnerability exists where the system may attempt to access a port group after it has been deleted. This can occur if multicast-to-unicast was previously enabled and then disabled, leading to a sta...

SUSE-SU-2026:23810-1 Security update for the Linux Kernel RT (Live Patch 24 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-47.1 fixes various security issues: The following security issues were fixed: - CVE-2026-46150: fanotify: fix false positive on permission events bsc1267388. - CVE-2026-64423: ipv4: igmp: remove multicast group from hash table on device...

SUSE CVE-2026-80996

In the Linux kernel, the following vulnerability has been resolved: net: l2tp: do not propagate multicast notification errors The tunnel create, tunnel modify, session create, and session modify netlink handlers send multicast notifications through helpers that can fail while allocating or encodi...

Linux Distros Unpatched Vulnerability : CVE-2026-80996

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: l2tp: do not propagate multicast notification errors The tunnel create, tunnel modify, session create, and session modify netlink handlers send multicast...

Linux Distros Unpatched Vulnerability : CVE-2026-89564

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ip: orphan prefetched skbs before multicast forwarding IPv4 and IPv6 input preserve an skb-sk association installed by bpfskassign so that local delivery can us...

CVE-2026-89564

A flaw was found in the Linux kernel's IP multicast forwarding. When a prefetched socket is destroyed, a subsequent operation to free a network packet skb can attempt to access the already freed socket memory. This use-after-free vulnerability can be triggered by a remote attacker sending special...