kernel: netfilter: nf_tables: possible module reference underflow in error path

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: possible module reference underflow in error path dst-ops is set on when nftexprclone fails, but module refcount has not been bumped yet, therefore nftexprdestroy leads to module reference underflow...

CVE-2021-47563

A vulnerability was found in the Linux kernel's ice driver, where the addpbleprm function improperly manages the reference counting of the bpfprog object. This issue occurs during the VSI rebuild process, causing a reference count underflow when an old program is mistakenly decremented while stil...

CVE-2021-47555

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

DEBIAN-CVE-2021-47563

In the Linux kernel, the following vulnerability has been resolved: ice: avoid bpfprog refcount underflow Ice driver has the routines for managing XDP resources that are shared between ndobpf op and VSI rebuild flow. The latter takes place for example when user changes queue count on an interface...

CVE-2021-47555

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

CVE-2021-47555

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

CVE-2021-47555

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

CVE-2021-47555

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

UBUNTU-CVE-2021-47563

In the Linux kernel, the following vulnerability has been resolved: ice: avoid bpfprog refcount underflow Ice driver has the routines for managing XDP resources that are shared between ndobpf op and VSI rebuild flow. The latter takes place for example when user changes queue count on an interface...

CVE-2021-47563 ice: avoid bpf_prog refcount underflow

In the Linux kernel, the following vulnerability has been resolved: ice: avoid bpfprog refcount underflow Ice driver has the routines for managing XDP resources that are shared between ndobpf op and VSI rebuild flow. The latter takes place for example when user changes queue count on an interface...

CVE-2021-47563

CVE-2021-47563 (Linux kernel, ice driver): A refcount mismanagement in the ice XDP path during VSI rebuilds (e.g., ethtool set_channels) can swap bpf_prog pointers and trigger a late bpf_prog_put, potentially leading to a zero-refcount object and a kernel page fault. The issue affects the ice dri...

CVE-2021-47555 net: vlan: fix underflow for the real_dev refcnt

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

CVE-2021-47555

Summary (supported by provided docs): In the Linux kernel, the VLAN real_dev refcnt underflow was fixed. The issue occurred when an error was injected before dev_hold(real_dev) in register_vlan_dev(), causing the real_dev refcount to underflow and triggering a warning and an endless wait-loop dur...

CVE-2021-47555 net: vlan: fix underflow for the real_dev refcnt

In the Linux kernel, the following vulnerability has been resolved: net: vlan: fix underflow for the realdev refcnt Inject error before devholdrealdev in registervlandev, and execute the following testcase: ip link add dev dummy1 type dummy ip link add name dummy1.100 link dummy1 type vlan id 100...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an underflow problem with realdev refcnt...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in Linux kernel, which stems from a reference count underflow...

CVE-2023-52705

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix underflow in second superblock position calculations Macro NILFSSB2OFFSETBYTES, which computes the position of the second superblock, underflows when the argument device size is less than 4096 bytes. Therefore, when...

kernel: RDMA/efa: Fix wrong resources deallocation order

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Fix wrong resources deallocation order When trying to destroy QP or CQ, we first decrease the refcount and potentially free memory regions allocated for the object and then request the device to destroy the object. If t...

kernel: xsk: fix refcount underflow in error path

In the Linux kernel, the following vulnerability has been resolved: xsk: fix refcount underflow in error path Fix a refcount underflow problem reported by syzbot that can happen when a system is running out of memory. If xpalloctxdescs fails, and it can only fail due to not having enough memory,...

(Pwn2Own) Microsoft Windows CLFS Integer Underflow Local Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Common Log Fil...