UBUNTU-CVE-2026-64574

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: tear down new links on vif update error path When ieee80211vifupdatelinks adds new links it allocates a link container for each and calls ieee80211linkinit which registers the per-link debugfs files with...

UBUNTU-CVE-2026-64580

In the Linux kernel, the following vulnerability has been resolved: xfrm6: clear dst.dev on error to avoid double netdevput in xfrm6filldst On the error path where in6devgetdev returns NULL, xfrm6filldst releases the device reference with netdevput but leaves xdst-u.dst.dev set. dstdestroy later...

CVE-2026-64581 xfrm: fix sk_dst_cache double-free in xfrm_user_policy()

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix skdstcache double-free in xfrmuserpolicy xfrmuserpolicy clears the socket dst cache with skdstreset, i.e. the non-atomic skdstsetsk, NULL: it reads skdstcache with rcudereferenceprotected, stores NULL and dstreleases th...

CVE-2026-64579 xfrm: policy: preallocate inexact bins before xfrm_hash_rebuild reinsert

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: preallocate inexact bins before xfrmhashrebuild reinsert xfrmhashrebuild's first loop preallocates the bins/chains the reinsert loop needs, so the reinsert after hlistdelrcu cannot allocate or fail. But its guard is...

CVE-2026-64580

CVE-2026-64580 affects the Linux kernel xfrm6 path. On error when in6_dev_get(dev) returns NULL, xfrm6_fill_dst() releases the device reference with netdev_put() but leaves xdst->u.dst.dev set, causing dst_destroy() to netdev_put(dst->dev) again and double-free the net_device reference, und...

CVE-2026-64580 xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst()

In the Linux kernel, the following vulnerability has been resolved: xfrm6: clear dst.dev on error to avoid double netdevput in xfrm6filldst On the error path where in6devgetdev returns NULL, xfrm6filldst releases the device reference with netdevput but leaves xdst-u.dst.dev set. dstdestroy later...

CVE-2026-64579

The CVE-2026-64579 entry describes a Linux kernel xfrm policy issue in xfrm_hash_rebuild: the first loop preallocates bins for the reinsert path, but the guard inversion causes inexact policy reinserts to allocate at GFP_ATOMIC during reinsert, risking LIST_POISON2 dereferences and a crash under ...

EUVD-2026-53274

In the Linux kernel, the following vulnerability has been resolved: xfrm6: clear dst.dev on error to avoid double netdevput in xfrm6filldst On the error path where in6devgetdev returns NULL, xfrm6filldst releases the device reference with netdevput but leaves xdst-u.dst.dev set. dstdestroy later...

EUVD-2026-53273

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: preallocate inexact bins before xfrmhashrebuild reinsert xfrmhashrebuild's first loop preallocates the bins/chains the reinsert loop needs, so the reinsert after hlistdelrcu cannot allocate or fail. But its guard is...

CVE-2026-64578

Summary: CVE-2026-64578 affects the ksmbd component of the Linux kernel. A vulnerability exists where ksmbd_smb2_check_message() reads the 2-byte StructureSize2 field at offset 64 of an SMB2 compound element without first ensuring the element is large enough. An attacker can craft a compound SMB2...

EUVD-2026-53271

In the Linux kernel, the following vulnerability has been resolved: gtp: check skbpulldata return in gtp1usendechoresp gtp1usendechoresp ignores skbpulldata's return value. Its caller gtp1uudpencaprecv only guarantees 16 bytes udphdr + gtp1header, but the pull requests 20 gtp1headerlong + udphdr...

CVE-2026-64577

In the Linux kernel, the following vulnerability has been resolved: gtp: check skbpulldata return in gtp1usendechoresp gtp1usendechoresp ignores skbpulldata's return value. Its caller gtp1uudpencaprecv only guarantees 16 bytes udphdr + gtp1header, but the pull requests 20 gtp1headerlong + udphdr...

CVE-2026-64576

In the Linux kernel, the following vulnerability has been resolved: nexthop: initialize extack in nhresbucketmigrate nhresbucketmigrate passes an uninitialized netlinkextack to callnexthopresbucketnotifiers. When nhnotifierresbucketinfoinit fails e.g. the kzalloc returns -ENOMEM, the error is...

CVE-2026-64576

The CVE-2026-64576 issue affects the Linux kernel’s nexthop resolution path (nh_res_bucket_migrate in net/ipv4/nexthop.c), where an uninitialized netlink_ext_ack could be used when allocation fails, leading to a kernel panic. The root cause is the use of an uninitialized extack, which may derefer...

EUVD-2026-53270

In the Linux kernel, the following vulnerability has been resolved: nexthop: initialize extack in nhresbucketmigrate nhresbucketmigrate passes an uninitialized netlinkextack to callnexthopresbucketnotifiers. When nhnotifierresbucketinfoinit fails e.g. the kzalloc returns -ENOMEM, the error is...

CVE-2026-64576 nexthop: initialize extack in nh_res_bucket_migrate()

In the Linux kernel, the following vulnerability has been resolved: nexthop: initialize extack in nhresbucketmigrate nhresbucketmigrate passes an uninitialized netlinkextack to callnexthopresbucketnotifiers. When nhnotifierresbucketinfoinit fails e.g. the kzalloc returns -ENOMEM, the error is...

CVE-2026-64575

In the Linux kernel, the following vulnerability has been resolved: bpf: tcp: fix double sock release on batch realloc bpfitertcpbatch releases the current batch via bpfitertcpputbatch, which drops the socket refs and rewrites each slot with the socket cookie, then grows the batch. cursk/endsk ar...

EUVD-2026-53269

In the Linux kernel, the following vulnerability has been resolved: bpf: tcp: fix double sock release on batch realloc bpfitertcpbatch releases the current batch via bpfitertcpputbatch, which drops the socket refs and rewrites each slot with the socket cookie, then grows the batch. cursk/endsk ar...

CVE-2026-64575

CVE-2026-64575 affects the Linux kernel’s BPF TCP iterator. The issue is a double release of socket resources during batch reallocation in bpf_iter_tcp_batch, where on realloc failure the code returns ERR_PTR() and leaves cur_sk

CVE-2026-64574 wifi: mac80211: tear down new links on vif update error path

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: tear down new links on vif update error path When ieee80211vifupdatelinks adds new links it allocates a link container for each and calls ieee80211linkinit which registers the per-link debugfs files with...