Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098831)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098831 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: release flowtable after rcu grace period on error Call synchronizercu after...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098938)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098938 advisory. In the Linux kernel, the following vulnerability has been resolved: net: use dstdevrcu in sksetupcaps Use RCU to protect accesses to dst-dev from sksetupcaps and...

The vulnerability of the cblist_init_generic() function in the kernel/rcu/tasks.h module of the Linux operating system allows a attacker to cause a service failure.

The vulnerability of the cblistinitgeneric function in the kernel/rcu/tasks.h module of the Linux operating system is related to the use of blocking code in a single-threaded, non-blocking context. Exploiting this vulnerability could allow an attacker to cause a service failure...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fixed the issue where the timer for starting a call race against the destruction of the call occurred. The rxrpccall structure contains a timer used to handle various timed events related to calls. This timer can be...

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

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Fixed a potential data race in nftobjtypeget. The function nftunregisterobj can occur concurrently with nftobjtypeget. There is no protection when iterating over the nftablesobjects list in nftobjtypeget...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: kprobes: Do not call disarmkprobe for disabled kprobes The assumption in disablekprobe is incorrect, and it may attempt to disarm a kprobe that is already disarmed, thereby triggering WARNONCE below. This issue can be easily...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: mt76: Fixed a use-after-free by removing a non-RCU wcid pointer. This fix addresses an issue detected by KASAN regarding use-after-free in mt76txqschedule. This was done by protecting mtxq-wcid with rculock between...

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: rcu/rcuscale: The kfreescalethread threads is stopped after unloading the rcuscale module. Running the ‘kfreercutest’ test case results in a fatal error. The root cause is that the kfreescalethread threads continues to run after...

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: net: gtp: Fixed the use-after-free issue in gtpdellink. Since the callrcu function, which is called during the hlistforeachentryrcu traversal of gtpdellink, is not part of the RCU read critical section, it is possible that the RC...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: mctp: Set SOCKRCUFREE The Bind lookup operation is executed under RCU; therefore, ensure that a socket does not disappear during the middle of a lookup operation...

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

A “use-after-free” vulnerability in the Linux kernel’s ipv4:igmp component can be exploited to achieve local privilege escalation. A race condition can also be exploited, causing a timer to be mistakenly registered on a RCU read-locked object that is then freed by another thread. We recommend...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: The netlink notifier might race to release objects. The commit release path is invoked via callrcu, and it runs without locking to release the objects after the rcu grace period. The netlink notifier handler...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Use callrcu to free endpoints This patch delays the endpoint freeing process by calling callrcu, in order to address another use-after-free issue in sctpsockdump: BUG: KASAN: Use-after-free in lockacquire+0x36d9/0x4c20...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed a race condition between bpftimercancelandfree and bpftimercancel. This race condition could lead to a UAF Use-After-Free error involving the timer-timer variable. Here’s the detailed explanation: In bpftimer...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: dm: fixed a use-after-free in dmcleanupzoneddev dmcleanupzoneddev uses a queue, so it must be called before blkcleanupdisk starts its execution: blkcleanupdisk-blkcleanupqueue-kobjectput-blkreleasequeue-...

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: openvswitch: Use RCU protection in ovsvportcmdfillinfo. ovsvportcmdfillinfo can be called without RTNL or RCU. Use RCU protection and devnetrcu to avoid potential UAF Use-After-Free errors...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dm: Do not attempt to queue IO under RCU protection dm looks up the table for IO based on the request type. It assumes that if the request is marked as REQNOWAIT, it’s safe to attempt to submit that IO while under the RCU read lo...

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: mac802154: fixed the issue where key resources were released in mac802154llseckeydel. The mac802154llseckeydel function can free resources associated with a key directly, without following the RCU rules for waiting before the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: The issue related to “slab-use-after-free” in inetlookupestablished has been fixed. The lookups in the ehash table are performed without locking, and they rely on SLABTYPESAFEBYRCU to ensure the stability of socket memory...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ICMP: Prevent possible NULL dereferencing from icmpbuildprobe. The first issue involves a double call to indevgetrcu; the second call might return NULL. if indevgetrcudev && indevgetrcudev-ifalist The second issue involves...