EUVD-2026-64537

In the Linux kernel, the following vulnerability has been resolved: mm/pagetablecheck: skip special zero mappings pagetablecheckset and pagetablecheckclear account mappings based on PageAnon. Shared zero-page PTEs and huge zero PMDs are special mappings, but pagetablecheck can still account them ...

CVE-2026-74600 mm/page_table_check: skip special zero mappings

In the Linux kernel, the following vulnerability has been resolved: mm/pagetablecheck: skip special zero mappings pagetablecheckset and pagetablecheckclear account mappings based on PageAnon. Shared zero-page PTEs and huge zero PMDs are special mappings, but pagetablecheck can still account them ...

CVE-2026-74600 mm/page_table_check: skip special zero mappings

In the Linux kernel, the following vulnerability has been resolved: mm/pagetablecheck: skip special zero mappings pagetablecheckset and pagetablecheckclear account mappings based on PageAnon. Shared zero-page PTEs and huge zero PMDs are special mappings, but pagetablecheck can still account them ...

CVE-2026-74599

CVE-2026-74599 is a race condition in the Linux kernel 's mm/ptdump subsystem. Previous fixes established that kernel page table freeing occurs while holding an mmap read lock on init_mm , but x86 and arm64 architectures can perform a ptdump over a non-init_mm via ptdump_walk_pgd(). Since kernel ...

EUVD-2026-64536

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74599 mm/ptdump: always stabilise against page table freeing using init_mm

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74599

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74599 mm/ptdump: always stabilise against page table freeing using init_mm

In the Linux kernel, the following vulnerability has been resolved: mm/ptdump: always stabilise against page table freeing using initmm Previous commits have established the invariant that kernel page table freeing is performed while an mmap read lock on initmm is held, which fixes races between...

CVE-2026-74597

This vulnerability affects the Linux kernel 's ip6_tunnel module, specifically the ip6ip6_err() function. When processing an outer IPv6 ICMP error packet, the function clones and pulls the skb to the quoted inner IPv6 packet but fails to clear skb2->cb[], leaving the outer packet's inet6_skb_p...

CVE-2026-74598

CVE-2026-74598 is an out-of-bounds read in the Linux kernel's IPv6 stack, specifically in rt6_route_rcv() handling of the Route Information option (RFC 4191). Both length checks are off by one: the code accepts length >= 2 and length >= 1 where RFC 4191 requires stricter bounds. A remote at...

CVE-2026-74598 ipv6: fix Route Information option length validation

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74597 ip6_tunnel: clear skb2->cb[] in ip6ip6_err()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip6ip6err ip6ip6err clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6send. The clone still carries the outer packet's inet6skbparm in...

EUVD-2026-64534

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip6ip6err ip6ip6err clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6send. The clone still carries the outer packet's inet6skbparm in...

EUVD-2026-64535

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74597

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip6ip6err ip6ip6err clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6send. The clone still carries the outer packet's inet6skbparm in...

CVE-2026-74598

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74598 ipv6: fix Route Information option length validation

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74597 ip6_tunnel: clear skb2->cb[] in ip6ip6_err()

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: clear skb2-cb in ip6ip6err ip6ip6err clones an outer IPv6 ICMP error skb, pulls it to the quoted inner IPv6 packet, and then passes the clone to icmpv6send. The clone still carries the outer packet's inet6skbparm in...

CVE-2026-74596

This vulnerability affects the Linux kernel in the fsverity (filesystem verity) subsystem. The issue is in setattr_prepare(), where an unnecessary check for whether fs-verity is enabled in the kernel was present. Filesystems can contain fsverity files even when fs-verity is not enabled, and in th...

CVE-2026-74596 fs,fsverity: remove check for fsverity being enabled in setattr_prepare()

In the Linux kernel, the following vulnerability has been resolved: fs,fsverity: remove check for fsverity being enabled in setattrprepare The check that fs-verity is available in the kernel is not necessary here. Filesystems could have fsverity files even without fs-verity enabled. In that case,...