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 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...

CVE-2026-45957

CVE-2026-45957 documents a Linux kernel RCU bug: missing recursion protection in rcu_read_unlock() can cause a deadloop when softirq handling runs under ftrace, as shown in the call stack involving raise_softirq_irqoff() and rcu_read_unlock_special(). The issue was fixed by commits that adjust ir...

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...

CLSA-2026-1779434490 kernel: Fix of 100 CVEs

tracing: Verify event formats that have "%p.." CVE-2025-37938 - HID: pidff: Fix null pointer dereference in pidfffindfields CVE-2025-37862 - scsi: st: Fix array overflow in stsetup CVE-2025-37857 - drm/amdkfd: debugfs hanghws skip GPU with MES CVE-2025-37853 - mm/vmscan: don't try to reclaim...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: kprobes: The posthandler of aggrprobe is cleared in the case where kprobe-on-ftrace is used. In unregisterkprobetop, if the currently unregistered probe has a posthandler, but other child probes of aggrprobe do not have a...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fprobe: Release rethook after the ftraceops is unregistered While running bpf selftests, the following errors may occur: General protection fault, likely for non-canonical addresses \ 0x6b6b6b6b6b6b6b6b: 0000 1 PREEMPT SMP...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: arm64: ftrace: consistently handles PLTs. Sometimes it is necessary to use a PLT entry to call a ftrace trampoline. This is handled by ftracemakecall and ftracemakenop, both of which have almost identical logic. However, this is...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ftrace: Do not blindly read the IP address in ftracebug. It was reported that a bug in arm64 caused a bad IP address to be used for updating a NOP instruction in ftraceinit. However, the error path correctly returned -EINVAL...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Fixed NULL pointer dereferencing in isftracetrampoline when ftrace is disabled. ftracestartup does not remove ops from ftraceopslist when ftracestartupenable fails: registerftracefunction ftracestartup...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Clean up the handling of hash operations when registers fail. The following GPF errors occur when registerftracedirect fails: General protection fault, likely due to a non-canonical address \ 0x200000000000010: 0000 1...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ftrace: A null pointer dereference occurred in ftraceaddmod. The @ftracemod is allocated using kzalloc. Therefore, both members prev, next of @ftracemode-list are NULL. This makes calling listdel invalid. If kstrdup for...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Tracing: The length check that causes memory corruption was corrected. We have experienced severe kernel crashes due to memory corruption in our production environment. For example: Call Trace: 1640542.554277 General protectio...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Fixed a use-after-free issue related to dynamic ftraceops. KASAN reported a use-after-free when using ftrace. It was discovered that perf registered two ftrace operations with the same content, both being dynamic. Afte...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tracing/userevents: Ensure that the write index cannot be negative. The write index indicates which event the data corresponds to and accesses a per-file array. This index is passed by user processes during write calls as the fir...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: s390/idle: Marking archcpuidle as having no instructions The linux-next commit “cpuidle: tracing: Warning about !rcuiswatching” adds a new warning that affects the archcpuidle function on the s390 architecture. WARNING: “CPU: 2...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ftrace: Do not over-allocate ftrace memory The calculation of pgremaining in ftraceprocesslocs assumes that ENTRIESPERPAGE multiplied by 2^order equals the actual capacity of the allocated page group. However, ENTRIESPERPAGE i...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: arm64: ftrace: fixed module PLTs with mcount Li Huafei reports that the ftrace with module PLTs based on mcount was broken by the commit: a6253579977e4c6f “arm64: ftrace: consistently handle PLTs.” When module PLTs are used and a...