CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

kernel: nf_tables: use-after-free vulnerability in the nft_verdict_init() function

A flaw was found in the Netfilter subsystem in the Linux kernel. This issue occurs in the nftverdictinit function, allowing positive values as a drop error within the hook verdict, therefore, the nfhookslow function can cause a double-free vulnerability when NFDROP is issued with a drop error tha...

kernel: netfilter: nf_tables: disallow anonymous set with timeout flag

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: disallow anonymous set with timeout flag Anonymous sets are never used with timeout from userspace, reject this. Exception to this rule is NFTSETEVAL to ensure legacy meters still work...

kernel: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

A vulnerability was found in the netfilter/nftables subsystem of Linux Kernel, where a race condition caused where the garbage collector could prematurely collect elements from anonymous sets with timeouts while they were being released...

SUSE CVE-2021-47312

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Fix dereference of null pointer flow In the case where chain-flags & NFTCHAINHWOFFLOAD is false then nftflowrulecreate is not called and flow is NULL. The subsequent error handling execution via label...

kernel: netfilter: nf_tables: disallow timeout for anonymous sets

A vulnerability was found in netfilter/nftables componets of Linux Kernel allows an userspace to set timeouts for anonymous sets, which are not intended to be used this way. This could lead to unexpected behaviour or security issues...

kernel: null pointer dereference vulnerability in nft_dynset_init()

A null pointer dereference vulnerability was found in nftdynsetinit in net/netfilter/nftdynset.c in nftables in the Linux kernel. This issue may allow a local attacker with CAPNETADMIN user privilege to trigger a denial of service...

kernel: netfilter: nf_tables: memory leak when more than 255 elements expired

A use-after-free flaw was found in the Linux kernel’s nftables sub-component due to a race problem between the set GC and transaction in the Linux Kernel. This flaw allows a local attacker to crash the system. This flaw is similar to the previous CVE-2023-4244 but for a different part of the sour...

DEBIAN-CVE-2021-47452

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: skip netdev events generated on netns removal syzbot reported following harmless WARN: WARNING: CPU: 1 PID: 2648 at net/netfilter/core.c:468 nftnetdevunregisterhooks net/netfilter/nftablesapi.c:230 inline...

UBUNTU-CVE-2021-47452

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: skip netdev events generated on netns removal syzbot reported following harmless WARN: WARNING: CPU: 1 PID: 2648 at net/netfilter/core.c:468 nftnetdevunregisterhooks net/netfilter/nftablesapi.c:230 inline...

DEBIAN-CVE-2021-47394

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: unlink table before deleting it syzbot reports following UAF: BUG: KASAN: use-after-free in memcmp+0x18f/0x1c0 lib/string.c:955 nlastrcmp+0xf2/0x130 lib/nlattr.c:836 nfttablelookup.part.0+0x1a2/0x460...

CVE-2021-47371

In the Linux kernel, the following vulnerability has been resolved: nexthop: Fix memory leaks in nexthop notification chain listeners syzkaller discovered memory leaks 1 that can be reduced to the following commands: ip nexthop add id 1 blackhole devlink dev reload pci/0000:06:00.0 As part of the...

CVE-2021-47277

In the Linux kernel, the following vulnerability has been resolved: kvm: avoid speculation-based attacks from out-of-range memslot accesses KVM's mechanism for accessing guest memory translates a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn an...

CVE-2021-47350 powerpc/mm: Fix lockup on kernel exec fault

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: Fix lockup on kernel exec fault The powerpc kernel is not prepared to handle exec faults from kernel. Especially, the function isexecfault will return 'false' when an exec fault is taken by kernel, because the check i...

CVE-2021-47277

CVE-2021-47277 affects the Linux kernel KVM path for guest memory translation. The issue arises when speculative execution may use an invalid guest frame number (gfn) to compute an out-of-bounds host virtual address (hva) in __gfn_to_hva_memslot, enabling a potential two-read Spectre gadget where...

SUSE CVE-2024-35898

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: Fix potential data-race in nftflowtabletypeget nftunregisterflowtabletype within nfflowinetmoduleexit can concurrent with nftflowtabletypeget within nftablesnewflowtable. And thhere is not any protection when...

SUSE CVE-2024-35897

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: discard table flag update with pending basechain deletion Hook unregistration is deferred to the commit phase, same occurs with hook updates triggered by the table dormant flag. When both commands are combine...

SUSE CVE-2024-35900

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: reject new basechain after table flag update When dormant flag is toggled, hooks are disabled in the commit phase by iterating over current chains in table existing and new. The following configuration allows...

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 that originates from the netfilter:nftables module unlinking tables before deleting them...

DEBIAN-CVE-2024-36005

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: honor table dormant flag from netdev release event path Check for table dormant flag otherwise netdev release event path tries to unregister an already unregistered hook. 524854.857999 ------------ cut here...