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

In the Linux kernel, the following vulnerability has been resolved: net/xen-netback: This issue prevents a Use-after-Free UAF condition in xenvifFlushHash. During the listforeachentryrcu iteration, when calling xenvifFlushHash, kfreercu does not exist within the rcu read critical section...

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

In the Linux kernel, the following vulnerability has been resolved: bpf: Deferring the release of the inner map when necessary When updating or deleting an inner map in the map array or map htab, the map may still be accessed by non-sleepable programs or sleepable programs. However, bpfmapfdputpt...

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: - In the net subsystem, do not delay the execution of dstentriesadd within dstrelease. - dstentriesadd uses data per-core that might be freed during the dismantling of ip6routenetexit, by calling dstentriesdestroy. Before...

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

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: c sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. Therefore, the function must ensure...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: hrtimers: Timers queued after CPUHPAPHRTIMERSDYING are forced to be migrated away from the dying CPU to any online target. This is done to avoid delaying bandwidth timer handling tasks related to CPU hotplug progress. However,...

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...

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

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fixed the buffer overflow in showrcutasksTracegpkthread. There is a possibility of buffer overflow in showrcutasksTracegpkthread if the counters passed to sprintf are very large. The counter values used for this functi...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fixed potential use after free in otx2tcaddflow This code calls kfreercunewnode, rcu, then dereferences newnode, and then derefs it again in the next line. After two lines, a mutex is acquired; therefore, I don’t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fixed the cleanup flow for mlx5eprivinit. When mlx5eprivinit fails, the cleanup flow calls mlx5eselqcleanup, which in turn calls mlx5eselqapply. This ensures that priv-statelock is held using lockdepisheld. The statelo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: bridge: mst: fix vlan use-after-free The syzbot reported a suspicious RCU usage1 in the mst code of bridge. While fixing this issue, I noticed that nothing prevents vlan information from being freed while walking the list...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: A possible infinite loop has been fixed in fib6infousesdev. fib6infousesdev appears to rely on RCU without proper protection. Similar to the previous fix in rt6nlmsgsize, we need to ensure that fib6delroute or fib6addrt2nod...

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

In the Linux kernel, the following vulnerability has been resolved: ALSA: Timer – Setting a lower limit on the start tick time Currently, the ALSA timer does not have a lower limit for the start tick time. It allows a very small size, for example, 1 tick with a resolution of 1 ns for the hrtimer...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: tls: Use skdstget and dstdevrcu in getnetdevforsock. getnetdevforsock is called during setsockopt, so it isn’t under RCU. Using skdstgetsk-dev could trigger a Use-After-Forgiving UAF condition. Let’s use skdstget and dstdevrcu...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: CFI: Fixed the use of cfislowpathdiag with cpuidle. The use of RCUNONIDLE during cfislowpathdiag can result in an invalid RCU state in the cpuidle code path. WARNING: CPU: 1; PID: 0; at kernel/rcu/tree.c:613; rcueqsenter+0xe4/0x1...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net/mlx5e: Fixed a deadlock in the tc route query code The cited commit caused a ABBA deadlock0 when peer flows were created while holding the devcom rw semaphore. Due to the peer flow offload implementation, the lock is taken...

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: netfilter: nftables: Fixed a potential data race in nftexprtypeget. The function nftunregisterexpr can occur concurrently with nftexprtypeget. There is no protection when iterating over the nftablesexpressions list in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: rcu-tasks: Fixed a race condition in the schedule function and the flush work operation. When booting secondary CPUs, cpusreadlock/unlock does not keep the online cpumask stable. This temporary change in the online mask result...

Linux Distros Unpatched Vulnerability : CVE-2026-89479

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sctp: stop processing a packet once its association is deleted sctpendpointbhrcv looks the association up only when chunk-asoc is NULL, and caches the result in...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Networks: Bridge: MST: Fixed suspicious RCU usage in brmstsetstate. I converted brmstsetstate to RCU to avoid a vlan use-after-free, but I forgot to change the vlangroupdereferencehelper. I switched to using the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Fixed the issue with rcudereferenceprotected. When destroying all sets, we are either in the pernetexit phase or executing a “destroy all sets” command from user space. The latter was taken into account in...