CVE-2026-52999

A flaw was found in the Linux kernel's netfilter subsystem, specifically in the nfnetlinkosf module. When the NFOSFLOGLEVELALL option is configured, an out-of-bounds read vulnerability can occur during TCP option parsing. This issue can lead to incorrect data processing and logging failures,...

EUVD-2026-39311

In the Linux kernel, the following vulnerability has been resolved: netfilter: revalidate bridge ports ebtredirecttg dereferences brportgetrcu return without a NULL check, causing a kernel panic when the bridge port has been removed between the original hook invocation and an NFQUEUE reinject. A...

CVE-2026-53000

In the Linux kernel, the following vulnerability has been resolved: netfilter: nat: use kfreercu to release ops Florian Westphal says: "Historically this is not an issue, even for normal base hooks: the data path doesn't use the original nfhookops that are used to register the callbacks. However,...

CVE-2026-52999

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix out-of-bounds read on option matching In nfosfmatch, the nfosfhdrctx structure is initialized once and passed by reference to nfosfmatchone for each fingerprint checked. During TCP option parsing,...

CVE-2026-52999

CVE-2026-52999 pertains to the Linux kernel netfilter nfnetlink_osf, where an out-of-bounds read can occur during TCP option parsing when NF_OSF_LOGLEVEL_ALL is enabled. The root cause is a shared ctx->optp pointer that isn’t restored after nf_osf_match_one() returns, allowing subsequent finge...

CVE-2026-52998

CVE-2026-52998 affects the Linux kernel’s netfilter nfnetlink_osf module. The nf_osf_ttl() function can dereference a device pointer (skb->dev) without validating the device, risking a NULL dereference. The patch removes the device dereference and the in_dev_for_each_ifa_rcu loop used to match...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-2371)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : iommu/sva: invalidate stale IOTLB entries for kernel address spaceCVE-2025-71202 iommu: disable SVA when CONFIGX86 is...

EulerOS 2.0 SP11 : kernel (EulerOS-SA-2026-2247)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : crypto: algifaead - Revert to operating out-of-placeCVE-2026-31431 nfsd: fix RELEASELOCKOWNERCVE-2024-26629 bonding: limit BONDMODE8023AD to...

kernel: netfilter: nf_tables: release flowtable after rcu grace period on error

A flaw was found in the Linux kernel's netfilter component, specifically within the nftables subsystem. An error in releasing a flowtable after an RCU Read-Copy-Update grace period could lead to a use-after-free vulnerability. This issue could expose the flowtable to the packet path and...

netfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO

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UBUNTU-CVE-2026-45859

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkqueue: do shared-unconfirmed check before segmentation Ulrich reports a regression with nfqueue: If an application did not set the 'FGSO' capability flag and a gso packet with an unconfirmed nfconn entry is...

SUSE CVE-2026-45841

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix divide-by-zero in OSFWSSMODULO nfosfmatchone computes ctx-window % f-wss.val in the OSFWSSMODULO branch with no guard for f-wss.val == 0. A CAPNETADMIN user can add such a fingerprint via nfnetlink; a...

CVE-2026-45841

A flaw was found in the Linux kernel's netfilter component. A local attacker with CAPNETADMIN capabilities, which grants certain network administration privileges, could trigger a divide-by-zero error by adding a specially crafted fingerprint via nfnetlink. This vulnerability could lead to a kern...

CVE-2026-45859

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkqueue: do shared-unconfirmed check before segmentation Ulrich reports a regression with nfqueue: If an application did not set the 'FGSO' capability flag and a gso packet with an unconfirmed nfconn entry is...

UBUNTU-CVE-2026-45841

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix divide-by-zero in OSFWSSMODULO nfosfmatchone computes ctx-window % f-wss.val in the OSFWSSMODULO branch with no guard for f-wss.val == 0. A CAPNETADMIN user can add such a fingerprint via nfnetlink; a...

EUVD-2026-32167

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix divide-by-zero in OSFWSSMODULO nfosfmatchone computes ctx-window % f-wss.val in the OSFWSSMODULO branch with no guard for f-wss.val == 0. A CAPNETADMIN user can add such a fingerprint via nfnetlink; a...

CVE-2026-45841 netfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix divide-by-zero in OSFWSSMODULO nfosfmatchone computes ctx-window % f-wss.val in the OSFWSSMODULO branch with no guard for f-wss.val == 0. A CAPNETADMIN user can add such a fingerprint via nfnetlink; a...

CVE-2026-45841 netfilter: nfnetlink_osf: fix divide-by-zero in OSF_WSS_MODULO

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix divide-by-zero in OSFWSSMODULO nfosfmatchone computes ctx-window % f-wss.val in the OSFWSSMODULO branch with no guard for f-wss.val == 0. A CAPNETADMIN user can add such a fingerprint via nfnetlink; a...

CVE-2026-45841

CVE-2026-45841 affects the Linux kernel netfilter nfnetlink_osf in the OSF_WSS_MODULO path. The root cause is a divide-by-zero in nf_osf_match_one() when ctx->window is taken modulo f->wss.val with no guard for f->wss.val == 0. A CAP_NET_ADMIN user can add such a fingerprint via nfnetlin...