UBUNTU-CVE-2026-46116

In the Linux kernel, the following vulnerability has been resolved: xfrm: defensively unhash xfrmstate lists in xfrmstatedelete KASAN reproduces a slab-use-after-free in xfrmstatedelete's hlistdelrcu calls under syzkaller load on linux-6.12.y stable reproduced on 6.12.47, also reachable via the...

CVE-2026-45957

A flaw was found in the Linux kernel's Read-Copy Update RCU mechanism. A missing recursion protection in the rcureadunlock function can lead to an infinite loop, known as a deadloop, when a soft interrupt softirq is triggered. This issue can cause the system to become unresponsive, resulting in a...

EUVD-2026-32241

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix rcureadunlock deadloop due to softirq Commit 5f5fa7ea89dc "rcu: Don't use negative nesting depth in rcureadunlock" removes the recursion-protection code from rcureadunlock. Therefore, we could invoke the deadloop in...

CVE-2026-45957

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix rcureadunlock deadloop due to softirq Commit 5f5fa7ea89dc "rcu: Don't use negative nesting depth in rcureadunlock" removes the recursion-protection code from rcureadunlock. Therefore, we could invoke the deadloop in...

UBUNTU-CVE-2026-45957

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix rcureadunlock deadloop due to softirq Commit 5f5fa7ea89dc "rcu: Don't use negative nesting depth in rcureadunlock" removes the recursion-protection code from rcureadunlock. Therefore, we could invoke the deadloop in...

CVE-2026-45957

CVE-2026-45957 affects the Linux kernel where removing recursion-protection from __rcu_read_unlock() can cause a deadloop when raise_softirq_irqoff() is invoked with ftrace enabled during rcu_read_unlock_special(). The issue, observed as a deadlock trace in trace.c, was fixed by commits that refo...

CVE-2026-45957 rcu: Fix rcu_read_unlock() deadloop due to softirq

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix rcureadunlock deadloop due to softirq Commit 5f5fa7ea89dc "rcu: Don't use negative nesting depth in rcureadunlock" removes the recursion-protection code from rcureadunlock. Therefore, we could invoke the deadloop in...

PT-2026-43824

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue in the Linux kernel can lead to a deadloop within the rcu read unlock function due to softirq. This occurs because recursion-protection code was removed from the rcu read unlock...

CVE-2026-45957

rcu: Fix rcureadunlock deadloop due to softirq...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from a deadlock issue caused by soft interrupts in the rcureadunlock function...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: erofs: Fixed the issue where xasretry was missing in the fscache mode. The xarray iteration only holds the RCU read lock; therefore, an XARETRYENTRY might be encountered if a process modifies the xarray concurrently. This would...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The use-after-free issue in smblazyparentleasebreakclose has been fixed. The opinfo pointer, which is obtained through rcudereferencefp-fopinfo, is accessed after rcureadunlock has been called. This creates a race conditio...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fixed the issue where the timer for a call could start racing with the destruction of the call itself. The rxrpccall structure contains a timer used to handle various timed events related to a call. This timer can be...

Astra Linux - уязвимость в linux-5.15, linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: A possible Use-after-Allocation UAF condition in ip6xmit has been prevented. If skbexpandhead returns NULL, the skb buffer is freed, and the associated dst/idev fields may also be freed. We must use rcureadlock to prevent...

Astra Linux - уязвимость в linux, linux-5.10, linux-5.15, linux-6.1

In the Linux kernel, the following vulnerabilities have 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 - уязвимость в linux-5.10, linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: ima: Avoid blocking in the RCU read-side critical section. A panic occurs in imamatchpolicy: BUG: Unable to handle a NULL pointer dereferencing in the kernel at 0000000000000010. PGD 42f873067 P4D 0 Oops: 0000 1 SMP NOPTI CPU:...

Astra Linux - уязвимость в linux-5.10, linux-6.1, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: RCU: Protect - deferqsiwpending from data race On kernels built with CONFIGIRQWORK=y, when rcureadunlock is invoked within a code region where interrupts are disabled 1, it will invoke rcureadunlockspecial. This function uses an...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: NFS/localio: Fixed a race condition in nfslocalopenfh Once the clp-cluuid.lock is dropped, another CPU may come in and free the structnfsdfile that was just added. To prevent this from happening, take the RCU read lock before...

Astra Linux - уязвимость в linux-5.10

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 - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: Bonding: Fix for missing rcu protection. When removing the rcureadlock from bondethtoolgettsinfo, I didn’t realize that it could also be called via setsockopt, which does not hold a rcu lock. As pointed out by syzbot: Stack trace...