Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: tipc: skblinearize the head skb when reassembling msgs It’s not a good idea to append the frag skb to a skb’s fraglist if the fraglist already contains skbs from elsewhere. For example, this frag skb was created by pskbcopy, wher...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: fix udp gsoskbSegment after pulling from fragList The commit a1e40ac5b5e9 “net: gso: fix udp gso fragList segmentation after pulling from fragList” detected invalid geometries in the fragList skbSegments and redirected them...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: gso: Fixed the udp gso fraglist segmentation issue after pulling from fraglist. Detect invalid geometry conditions caused by corrupted geometry data see below, and pass these conditions to skbsegment instead of skbSegmentList...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: net: prevented skb corruption during frag list segmentation. Ian reported several instances of skb corruption triggered by rx-gro-list, resulting in similar errors: 62.624003 BUG: kernel NULL pointer dereference, address:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Net: Fixing segmentation issues with forwarding fraglists for GRO packets This patch improves the handling of GSO segmentation by properly checking the SKBGSODODGY flag for GSO packets with a fraglist. This addresses low throughp...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: Fix NULL pointer in skbsegmentlist. The commit 3a1296a38d0c “net: Support GRO/GSO fraglist chaining” introduced support for UDP listified GROs. The segmentation of data relies on fraglist not being modified during transmissi...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100359)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100359 advisory. In the Linux kernel, the following vulnerability has been resolved: net: prevent skb corruption on frag list segmentation Ian reported several skb corruptions...

CVE-2026-72228 batman-adv: frag: fix primary_if leak on failed linearization

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primaryif leak on failed linearization If the skb has a fraglist, it must be linearized before it can be split using skbsplit. But when this step failed, it must not only free the skb but also take care of t...

PT-2026-72416

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primary if leak on failed linearization If the skb has a frag list, it must be linearized before it can be split using skb split. But when this step failed, it must not only free the skb but also take care o...

PT-2026-72928

In the Linux kernel, the following vulnerability has been resolved: veth: convert frag list skbs before running XDP A frag list skb can reach veth with data len set but nr frags zero. veth convert skb to xdp buff only converts skbs that are shared, locked, have frags, or do not have enough...

CVE-2026-68136

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix double aggregation of flush-marked skbs Commit 0ab03f353d36 "net-gro: Fix GRO flush when receiving a GSO packet." added a flush check to skbgroreceive, but skbgroreceivelist lacks the same validation. As a result,...

CVE-2026-68136 net: gro: fix double aggregation of flush-marked skbs

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix double aggregation of flush-marked skbs Commit 0ab03f353d36 "net-gro: Fix GRO flush when receiving a GSO packet." added a flush check to skbgroreceive, but skbgroreceivelist lacks the same validation. As a result,...

CVE-2026-68136

CVE-2026-68136 is a Linux kernel GRO flaw where missing NAPI_GRO_CB(skb)->flush validation in skb_gro_receive_list() allows double aggregation of flush-marked skbs, potentially corrupting frag_list and leading to a kernel panic during skb_segment() (DoS). Public reports (NVD, Red Hat, Debian, ...

PT-2026-69536

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Generic Receive Offload GRO implementation where packets marked with the flush flag in NAPI GRO CBskb may be incorrectly re-aggregated. This occurs because the skb...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: kcm: fixed zero-frag skb in fraglist in case of partial sendmsg errors Syzkaller reported a warning in kcmwritemsgs when processing a message with a zero-fragment skb in the fraglist. When kcmsendmsg fills MAXSKBFRAGS fragments i...

PT-2026-52330

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The skb gro receive list function calls skb pullskb, skb gro offsetskb without verifying if the data is in the linear area using pskb may pull. When a socket buffer skb arrives via napi...

EUVD-2026-29037

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present The DATA-packet handler in rxrpcinputcallevent and the RESPONSE handler in rxrpcverifyresponse copy the skb to a linear one before calling into the security o...

CVE-2026-43500 rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present The DATA-packet handler in rxrpcinputcallevent and the RESPONSE handler in rxrpcverifyresponse copy the skb to a linear one before calling into the security o...

kernel: sctp: avoid NULL dereference when chunk data buffer is missing

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk-skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk-skb can only be NULL if chunk-headskb is not. Check for fraglist instead...

SUSE CVE-2026-43244

In the Linux kernel, the following vulnerability has been resolved: kcm: fix zero-frag skb in fraglist on partial sendmsg error Syzkaller reported a warning in kcmwritemsgs when processing a message with a zero-fragment skb in the fraglist. When kcmsendmsg fills MAXSKBFRAGS fragments in the curre...