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-2021-47546 ipv6: fix memory leak in fib6_rule_suppress

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix memory leak in fib6rulesuppress The kernel leaks memory when a fib rule is present in IPv6 nftables firewall rules and a suppressprefix rule is present in the IPv6 routing rules used by certain tools such as wg-quick. I...

CVE-2021-47514 devlink: fix netns refcount leak in devlink_nl_cmd_reload()

In the Linux kernel, the following vulnerability has been resolved: devlink: fix netns refcount leak in devlinknlcmdreload While preparing my patch series adding netns refcount tracking, I spotted bugs in devlinknlcmdreload Some error paths forgot to release a refcount on a netns. To fix this, we...

CVE-2021-47514

CVE-2021-47514 : In the Linux kernel, there is a vulnerability in the devlink netns refcount handling, specifically a leak in netns refcounts in devlink_nl_cmd_reload(). The root cause is that some error paths forgot to release a netns refcount during the devlink_reload() flow. The patch fixes th...

CVE-2021-47514 devlink: fix netns refcount leak in devlink_nl_cmd_reload()

In the Linux kernel, the following vulnerability has been resolved: devlink: fix netns refcount leak in devlinknlcmdreload While preparing my patch series adding netns refcount tracking, I spotted bugs in devlinknlcmdreload Some error paths forgot to release a refcount on a netns. To fix this, we...

CVE-2021-47249

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix memory leak in rdsrecvmsg Syzbot reported memory leak in rds. The problem was in unputted refcount in case of error. int rdsrecvmsgstruct socket sock, struct msghdr msg, sizet size, int msgflags ... if...

CVE-2021-47294

A vulnerability was found in the Linux kernel's NetRom subsystem. This issue arises when socket timers expire, if the timer handler does not decrease the socket reference count as needed, the socket reference count becomes unbalanced. This can result in the socket not being freed properly,...

CVE-2021-47467

In the Linux kernel, the following vulnerability has been resolved: kunit: fix reference count leak in kfreeatend The reference counting issue happens in the normal path of kfreeatend. When kunitallocandgetresource is invoked, the function forgets to handle the returned resource object, whose...

CVE-2021-47450

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix host stage-2 PGD refcount The KVM page-table library refcounts the pages of concatenated stage-2 PGDs individually. However, when running KVM in protected mode, the host's stage-2 PGD is currently managed by EL2 a...

SUSE CVE-2021-47325

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

SUSE CVE-2021-47327

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak when armsmmurpmget fails armsmmurpmget invokes pmruntimegetsync, which increases the refcount of the "smmu" even though the return value is less than 0. The reference counting issue...

CVE-2021-47325

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix armsmmudevice refcount leak in address translation The reference counting issue happens in several exception handling paths of armsmmuiovatophyshard. When those error scenarios occur, the function forgets to...

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,...

kernel: usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe

In the Linux kernel, the following vulnerability has been resolved: usb: host: Fix refcount leak in ehcihcdppcofprobe offindcompatiblenode returns a node pointer with refcount incremented, we should use ofnodeput on it when done. Add missing ofnodeput to avoid refcount leak...

CVE-2021-47467

In the Linux kernel, the following vulnerability has been resolved: kunit: fix reference count leak in kfreeatend The reference counting issue happens in the normal path of kfreeatend. When kunitallocandgetresource is invoked, the function forgets to handle the returned resource object, whose...

CVE-2021-47450

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix host stage-2 PGD refcount The KVM page-table library refcounts the pages of concatenated stage-2 PGDs individually. However, when running KVM in protected mode, the host's stage-2 PGD is currently managed by EL2 a...

CVE-2021-47450

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix host stage-2 PGD refcount The KVM page-table library refcounts the pages of concatenated stage-2 PGDs individually. However, when running KVM in protected mode, the host's stage-2 PGD is currently managed by EL2 a...

DEBIAN-CVE-2021-47450

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix host stage-2 PGD refcount The KVM page-table library refcounts the pages of concatenated stage-2 PGDs individually. However, when running KVM in protected mode, the host's stage-2 PGD is currently managed by EL2 a...

UBUNTU-CVE-2021-47467

In the Linux kernel, the following vulnerability has been resolved: kunit: fix reference count leak in kfreeatend The reference counting issue happens in the normal path of kfreeatend. When kunitallocandgetresource is invoked, the function forgets to handle the returned resource object, whose...