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

In the Linux kernel, the following vulnerability has been resolved: dm thin: Make getfirstthin use listfirstornullrcu instead of rcu-safe list first function. The documentation in rculist.h explains the absence of listemptyrcu and warns programmers against relying on a sequence of listempty -...

CVE-2026-64542 ipv6: ndisc: fix NULL deref in accept_untracked_na()

In the Linux kernel, the following vulnerability has been resolved: ipv6: ndisc: fix NULL deref in acceptuntrackedna acceptuntrackedna re-fetches the inet6dev with in6devgetdev and dereferences idev-cnf.acceptuntrackedna without a NULL check, even though its only caller ndiscrecvna already fetche...

SUSE CVE-2026-63968

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6selectpath Found while auditing the same pattern Sashiko reported in rt6fillnode 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers...

CVE-2026-63968

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6selectpath Found while auditing the same pattern Sashiko reported in rt6fillnode 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers...

EUVD-2026-38856

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: join hook list via splicelistrcu in commit phase Publish new hooks in the list into the basechain/flowtable using splicelistrcu to ensure netlink dump list traversal via rcu is safe while concurrent ruleset...

EUVD-2026-38964

In the Linux kernel, the following vulnerability has been resolved: bpf: Use RCU-safe iteration in devmapredirectmulti SKB path The DEVMAPHASH branch in devmapredirectmulti uses hlistforeachentrysafe to iterate hash buckets, but this function runs under RCU protection called from...

CVE-2026-46242 eventpoll: fix ep_remove struct eventpoll / struct file UAF

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix epremove struct eventpoll / struct file UAF epremove via epremovefile cleared file-fep under file-flock but then kept using @file inside the critical section isfileepoll, hlistdelrcu through the head, spinunlock. A...

OPENSUSE-SU-2026:20826-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2023-2058: x86/CPU: Fix FPDSS on Zen1 bsc1243603. - CVE-2024-14027: xattr: switch to CLASSfd bsc1259420. - CVE-2025-40181: x86/kvm: Force legacy PCI hole to UC when...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mm: fixed a UAF Use-After-Free issue when vma-mm is freed after vma-vmrefcnt has been dropped. By introducing delays in the appropriate places, Jann Horn created a scenario where a UAF issue could occur—a problem that became...

CVE-2026-43376 ksmbd: fix use-after-free by using call_rcu() for oplock_info

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43216 net: Drop the lock in skb_may_tx_timestamp()

In the Linux kernel, the following vulnerability has been resolved: net: Drop the lock in skbmaytxtimestamp skbmaytxtimestamp may acquire sock::skcallbacklock. The lock must not be taken in IRQ context, only softirq is okay. A few drivers receive the timestamp via a dedicated interrupt and comple...

EUVD-2026-25472

In the Linux kernel, the following vulnerability has been resolved: wireguard: device: use exitrtnl callback instead of manual rtnllock in preexit wgnetnspreexit manually acquires rtnllock inside the pernet .preexit callback. This causes a hung task when another thread holds rtnlmutex - the...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-006965)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006965 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf: reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: sk =...

CVE-2026-23272

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: unconditionally bump set-nelems before insertion In case that the set is full, a new element gets published then removed without waiting for the RCU grace period, while RCU reader can be walking over it...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005139)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005139 advisory. In the Linux kernel, the following vulnerability has been resolved: net/xen-netback: prevent UAF in xenvifflushhash During the listforeachentryrcu iteration call of...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: Use skdstget and dstdevrcu in mptcpactiveenable. mptcpactiveenable is called from subflowfinishconnect, which is icsk-icskafops-skrxdstset. This call is not always under a RCU context. Using skdstgetsk-dev could lead to...

EUVD-2025-124915

In the Linux kernel, the following vulnerability has been resolved: smc: Use skdstget and dstdevrcu in smcclcprfxmatch. smcclcprfxmatch is called from smclistenwork and not under RCU nor RTNL. Using skdstgetsk-dev could trigger UAF. Let's use skdstget and dstdevrcu. Note that the returned value o...

CVE-2025-40168 smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

In the Linux kernel, the following vulnerability has been resolved: smc: Use skdstget and dstdevrcu in smcclcprfxmatch. smcclcprfxmatch is called from smclistenwork and not under RCU nor RTNL. Using skdstgetsk-dev could trigger UAF. Let's use skdstget and dstdevrcu. Note that the returned value o...

CVE-2025-40168 smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

In the Linux kernel, the following vulnerability has been resolved: smc: Use skdstget and dstdevrcu in smcclcprfxmatch. smcclcprfxmatch is called from smclistenwork and not under RCU nor RTNL. Using skdstgetsk-dev could trigger UAF. Let's use skdstget and dstdevrcu. Note that the returned value o...

Linux Distros Unpatched Vulnerability : CVE-2025-40133

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mptcp: Use skdstget and dstdevrcu in mptcpactiveenable. mptcpactiveenable is called from subflowfinishconnect, which is icsk-icskafops-skrxdstset and it's not...