CVE-2026-46323

In the Linux kernel, the following vulnerability has been resolved: net: gro: don't merge zcopy skbs skbgroreceive can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFLMANAGEDFRAGREFS flag. When SKBFLMANAGEDFRAGREFS is set, the...

CVE-2026-46207

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

CVE-2026-46207

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

CVE-2026-46207

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix empty payload in tap skb for non-linear buffers For non-linear skbs, virtiotransportbuildskb goes through virtiotransportcopynonlinearskb to copy the original payload in the new skb to be delivered to the vsockm...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: mptcp: Ensure that the tx-skbs always have the MPTCP extensions. Due to signed/unsigned comparison, the expression: info-sizegoal - skb-len 0 evaluates to true when the size goal is smaller than the skb size. This results in a la...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed the issue where skbcopyubufs was used in conjunction with BIG TCP, causing crashes due to TCP tx zerocopy using hugepages, and when the skb length exceeded approximately 68 KB. skbcopyubufs assumed that it could copy a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netpoll: Fixed a deadlock in memory allocation under spinlock. A deadlock occurred in the refillskbs function, where memory allocation while holding skbpool-lock could trigger a recursive lock acquisition attempt. This deadlock...

UBUNTU-CVE-2026-43284

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSGSPLICEPAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFLSHAREDFRAG after skbsplicefromiter, so later paths that may modify packet data ca...

SUSE CVE-2026-31563

In the Linux kernel, the following vulnerability has been resolved: net: macb: Use devconsumeskbany to free TX SKBs The napiconsumeskb function is not intended to be called in an IRQ disabled context. However, after commit 6bc8a5098bf4 "net: macb: Fix txptrlock locking", the freeing of TX SKBs is...

CVE-2026-31563 net: macb: Use dev_consume_skb_any() to free TX SKBs

In the Linux kernel, the following vulnerability has been resolved: net: macb: Use devconsumeskbany to free TX SKBs The napiconsumeskb function is not intended to be called in an IRQ disabled context. However, after commit 6bc8a5098bf4 "net: macb: Fix txptrlock locking", the freeing of TX SKBs is...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013513)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013513 advisory. In the Linux kernel, the following vulnerability has been resolved: skbuff: Fix a race between coalescing and releasing SKBs Commit 1effe8ca4e34 skbuff: fix coalesci...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-006928)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006928 advisory. In the Linux kernel, the following vulnerability has been resolved: tunnels: fix kasan splat when generating ipv4 pmtu error If we try to emit an icmp error in...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013286)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013286 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported 0 memory leak...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013270)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013270 advisory. In the Linux kernel, the following vulnerability has been resolved: net: fix skb leak in skbtstamptx Commit 50749f2dd685 tcp/udp: Fix memleaks of sk and zerocopy skb...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007241)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007241 advisory. In the Linux kernel, the following vulnerability has been resolved: net/sched: actmirred: don't override retval if we already lost the skb If we're redirecting the...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006721)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006721 advisory. In the Linux kernel, the following vulnerability has been resolved: tunnels: fix kasan splat when generating ipv4 pmtu error If we try to emit an icmp error in...

Siemens SIMATIC S7-1500 Use After Free (CVE-2025-38471)

In the Linux kernel, the following vulnerability has been resolved: tls: always refresh the queue when reading sock After recent changes in net-next TCP compacts skbs much more aggressively. This unearthed a bug in TLS where we may try to operate on an old skb when checking if all skbs in the que...

Siemens SIMATIC S7-1500 Use After Free(CVE-2025-38236)

"In the Linux kernel, the following vulnerability has been resolved: afunix: Don't leave consecutive consumed OOB skbs. Jann Horn reported a use-after-free in unixstreamreadgeneric. The following sequences reproduce the issue: $ python3 from socket import s1, s2 = socketpairAFUNIX, SOCKSTREAM...

CVE-2025-13350

Ubuntu Linux 6.8 GA retains the legacy AFUNIX garbage collector but backports upstream commit 8594d9b85c07 "afunix: Don’t call skbget for OOB skb". When orphaned MSGOOB sockets hit unixgc, the garbage collector still calls kfreeskb as if OOB SKBs held two references; on Ubuntu Linux 6.8 Noble...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005627)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005627 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. syzkaller reported 0 memory leak...