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: ax25: The unshare skbs operation was performed correctly in ax25kissrcv. Bernard Pidoux reported a regression that appeared to be caused by the commit c353e8983e0d “net: introduce per netns packet chains”. This commit introduced ...

EUVD-2026-76252

In the Linux kernel, the following vulnerability has been resolved: sysctl: move the "cadpid" entry from pidtable to kernreboottable cadpid is global, and killcadpid is only used in the root namespace. However, due to pidtablerootpermissions, a non-root user can unshare pid/user namespaces and...

CVE-2026-63875

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When hugepmdunshare is called to unshare a PMD table, the tlbunsharepmdptdesc function sets tlb-unsharedtables=true but the aarch64 tlbflush only checked tlb-freedtables to...

CVE-2026-63875 arm64: tlb: Flush walk cache when unsharing PMD tables

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When hugepmdunshare is called to unshare a PMD table, the tlbunsharepmdptdesc function sets tlb-unsharedtables=true but the aarch64 tlbflush only checked tlb-freedtables to...

CVE-2026-63875

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When hugepmdunshare is called to unshare a PMD table, the tlbunsharepmdptdesc function sets tlb-unsharedtables=true but the aarch64 tlbflush only checked tlb-freedtables to...

CVE-2026-63875 arm64: tlb: Flush walk cache when unsharing PMD tables

In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When hugepmdunshare is called to unshare a PMD table, the tlbunsharepmdptdesc function sets tlb-unsharedtables=true but the aarch64 tlbflush only checked tlb-freedtables to...

CVE-2026-45998

A flaw was found in the Linux kernel's rxrpc subsystem. This vulnerability arises when the system attempts to unshare a packet buffer, and the operation fails due to an allocation issue. This failure can lead to a Use-After-Free UAF condition, where the system attempts to access memory that has...

EUVD-2026-32294

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix potential UAF after skbunshare failure If skbunshare fails to unshare a packet due to allocation failure in rxrpcinputpacket, the skb pointer in the parent rxrpciothread will be NULL'd out. This will likely cause the...

DEBIAN-CVE-2025-39848

In the Linux kernel, the following vulnerability has been resolved: ax25: properly unshare skbs in ax25kissrcv Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d "net: introduce per netns packet chains". skb-dev becomes NULL and we crash in netifreceiveskbcore. Before...

CVE-2025-39848 ax25: properly unshare skbs in ax25_kiss_rcv()

In the Linux kernel, the following vulnerability has been resolved: ax25: properly unshare skbs in ax25kissrcv Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d "net: introduce per netns packet chains". skb-dev becomes NULL and we crash in netifreceiveskbcore. Before...

CVE-2025-39848 ax25: properly unshare skbs in ax25_kiss_rcv()

In the Linux kernel, the following vulnerability has been resolved: ax25: properly unshare skbs in ax25kissrcv Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d "net: introduce per netns packet chains". skb-dev becomes NULL and we crash in netifreceiveskbcore. Before...

CVE-2025-38084 mm/hugetlb: unshare page tables during VMA split, not before

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: unshare page tables during VMA split, not before Currently, splitvma triggers hugetlb page table unsharing through vmops-maysplit. This happens before the VMA lock and rmap locks are taken - which is too early, it...

K41582535: Linux kernel vulnerability CVE-2017-18509

Security Advisory Description An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inetcsklistenstop general protection fault, or potentially execute arbitrary code under...

Design/Logic Flaw

An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before 4.11. By setting a specific socket option, an attacker can control a pointer in kernel land and cause an inetcsklistenstop general protection fault, or potentially execute arbitrary code under certain circumstances. The issue...