EUVD-2026-38923

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/sec2 - prevent req used-after-free for sec During packet transmission, if the system is under heavy load, the hardware might complete processing the packet and free the request memory req before the transmission...

CVE-2026-53055 crypto: hisilicon/sec2 - prevent req used-after-free for sec

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/sec2 - prevent req used-after-free for sec During packet transmission, if the system is under heavy load, the hardware might complete processing the packet and free the request memory req before the transmission...

CVE-2026-53055 crypto: hisilicon/sec2 - prevent req used-after-free for sec

In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/sec2 - prevent req used-after-free for sec During packet transmission, if the system is under heavy load, the hardware might complete processing the packet and free the request memory req before the transmission...

CVE-2026-53036 bpf, arm64: Fix off-by-one in check_imm signed range check

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix off-by-one in checkimm signed range check checkimmbits, imm is used in the arm64 BPF JIT to verify that a branch displacement in arm64 instruction units fits into the signed N-bit immediate field of a B, B.cond or...

CVE-2026-53032 bpf: Fix NULL deref in map_kptr_match_type for scalar regs

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL deref in mapkptrmatchtype for scalar regs Commit ab6c637ad027 "bpf: Fix a bpfkptrxchg issue with local kptr" refactored mapkptrmatchtype to branch on btfiskernel before checking basetype. A scalar register stored in...

CVE-2026-53014 net/sched: act_mirred: fix wrong device for mac_header_xmit check in tcf_blockcast_redir

In the Linux kernel, the following vulnerability has been resolved: net/sched: actmirred: fix wrong device for macheaderxmit check in tcfblockcastredir In tcfblockcastredir, when iterating block ports to redirect packets to multiple devices, the macheaderxmit flag is queried from the wrong device...

CVE-2026-53006 ipv6: fix possible UAF in icmpv6_rcv()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6rcv Caching saddr and daddr before pskbpull is problematic since skb-head can change. Remove these temporary variables: - We only access &ipv6hdrskb-saddr and &ipv6hdrskb-daddr when netdbgratelimit...

CVE-2026-53003

The CVE-2026-53003 issue affects the Linux kernel PPPoE stack. A misbehaving peer can send a compressed Protocol Field (PFC) frame, causing the PPP payload to shift by one byte and creating a 4-byte misalignment in the network header, which may trigger unaligned access exceptions on some architec...

CVE-2026-52994

The CVE-2026-52994 vulnerability affects the Linux kernel’s vsock/virtio code, where the MSG_ZEROCOPY pinned-pages accounting could bypass RLIMIT_MEMLOCK on the last skb due to iter->count being consumed earlier. The fix makes pkt_len (the total bytes sent) the parameter to virtio_transport_in...

CVE-2026-52994 vsock/virtio: fix MSG_ZEROCOPY pinned-pages accounting

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix MSGZEROCOPY pinned-pages accounting virtiotransportinitzcopyskb uses iter-count as the size argument for msgzerocopyrealloc, which in turn passes it to mmaccountpinnedpages for RLIMITMEMLOCK accounting. However,...

CVE-2026-52945 Revert "wireguard: device: enable threaded NAPI"

In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enable threaded NAPI" This reverts commit 933466fc50a8e4eb167acbd0d8ec96a078462e9c which is commit db9ae3b6b43c79b1ba87eea849fd65efa05b4b2e upstream. We have had three independent production user report...

CVE-2026-52945 Revert "wireguard: device: enable threaded NAPI"

In the Linux kernel, the following vulnerability has been resolved: Revert "wireguard: device: enable threaded NAPI" This reverts commit 933466fc50a8e4eb167acbd0d8ec96a078462e9c which is commit db9ae3b6b43c79b1ba87eea849fd65efa05b4b2e upstream. We have had three independent production user report...

CVE-2026-52943

A flaw was found in the Linux kernel. The pskbcarveinsideheader and pskbcarveinsidenonlinear helper functions, which handle network packet buffers, do not correctly account for zero-copy references. This oversight can lead to a use-after-free vulnerability, where memory is prematurely released...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf, testrun: Subtract the size of xdpframe from the allowed metadata size. The xdpframe structure occupies part of the XDP frame header space, thereby limiting the size of the metadata. However, in bpftestrun, we do not take thi...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Enabling exception fixup for specific ADE subcodes This patch enables the LoongArch BPF JIT to handle recoverable memory access errors generated by BPFPROBEMEM instructions. When a BPF program performs memory access...

Astra Linux – Vulnerability in Linux 6.12

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

Astra Linux – Vulnerability in gpsd

There is an integer underflow vulnerability in the nextstate function in gpsd/packet.c in gpsd versions prior to the commit ffa1d6f40bca0b035fc7f5e563160ebb67199da7. When parsing a NAVCOM packet, the payload length is calculated using lexer-length = sizetc - 4, without checking whether the input...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bnxten: Fixed the XDPTX path. For the XDPTX action in bnxtrxxdp, clearing the event flags is incorrect. The sequence of calls bnxtpollwork - bnxtrxpkt - bnxtrxxdp may involve looping within the NAPI, and some event flags might be...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skb-transportheader is set in bpfskbcheckmtu. The bpfskbcheckmtu helper needs to use skb-transportheader when the BPFMTUCHKSEGS flag is used: bpfskbcheckmtuskb, ifindex, &mtulen, 0, BPFMTUCHKSEGS. The transportheader i...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: BPF: Freeing special fields when updating lru,percpuhash maps Since lru,percpuhash maps support BPFKPTRREF,PERCPU, missing calls to ‘bpfobjfreefields’ in ‘pcpucopyvalue’ could cause the memory referenced by BPFKPTRREF,PERCPU fiel...