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ALSA-2026:65334 — Important: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:10: kernel, AlmaLinux:10: kernel-64k, AlmaLinux:10: kernel-64k-core, AlmaLinux:10: kernel-64k-debug, AlmaLinux:10: kernel-64k-debug-core, AlmaLinux:10: kernel-64k-debug-devel, AlmaLinux:10: kernel-64k-debug-devel-matched, AlmaLinux:10: kernel-64k-debug-modules, AlmaLinux:10: kernel-64k-debug-modules-core, AlmaLinux:10: kernel-64k-debug-modules-extra and 65 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation (CVE-2026-43133) * kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334) * kernel: Bluetooth: virtio_bt: clamp rx length before skb_put (CVE-2026-46123) * kernel: Bluetooth: serialize accept_q access (CVE-2026-52918) * kernel: net: pull headers in qdisc_pkt_len_segs_init() (CVE-2026-53091) * kernel: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER (CVE-2026-53072) * kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove (CVE-2026-52947) * kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256) * kernel: wifi: nl80211: reject oversized EMA RNR lists (CVE-2026-53182) * kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend (CVE-2026-53209) * kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254) * kernel: vfio/pci: Clean up DMABUFs before disabling function (CVE-2026-53322) * kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975) * kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015) * kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() (CVE-2026-63947) * kernel: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sy…

BELL-CVE-2026-72098

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2026-avi-1203 — De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoq…

certfr-2026-avi-1203

EUVD-2026-353932

fkie_cve-2026-72098

In the Linux kernel, the following vulnerability has been resolved:

dm-verity: fix buffer overflow in FEC calculation

There's a buffer overflow in dm-verity-fec:

if (neras && *neras <= v->fec->roots) fio->erasures[(*neras)++] = i;

This allows *neras to reach roots + 1 (the post-increment pushes it past roots). This value is then passed as no_eras to decode_rs8(). Inside the RS decoder (lib/reed_solomon/decode_rs.c:113-121), the erasure locator polynomial loop writes lambda[j] where j can reach nroots + 1 — one element past the end of lambda[] (which is sized nroots + 1, valid indices 0..nroots). The out-of-bounds write lands on syn[0], corrupting the syndrome buffer.

GHSA-h569-8r6w-7rvq

In the Linux kernel, the following vulnerability has been resolved:

dm-verity: fix buffer overflow in FEC calculation

There's a buffer overflow in dm-verity-fec:

if (neras && *neras <= v->fec->roots) fio->erasures[(*neras)++] = i;

msrc_CVE-2026-72098 — dm-verity: fix buffer overflow in FEC calculation

msrc_CVE-2026-72098

OESA-2026-3707 — kernel security update

Affected: openEuler:24.03-LTS-SP1: kernel

The Linux Kernel, the operating system core itself. Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

seg6: separate dst_cache for input and output paths in seg6 lwtunnel

The seg6 lwtunnel uses a single dst_cache per encap route, shared between seg6_input_core() and seg6_output_core(). These two paths can perform the post-encap SID lookup in different routing contexts (e.g., ip rules matching on the ingress interface, or VRF table separation). Whichever path runs first populates the cache, and the other reuses it blindly, bypassing its own lookup.

Fix this by splitting the cache into cache_input and cache_output, so each path maintains its own cached dst independently.(CVE-2026-31668)

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix iova-to-va conversion for MR page sizes != PAGE_SIZE

The current implementation incorrectly handles memory regions (MRs) with page sizes different from the system PAGE_SIZE. The core issue is that rxe_set_page() is called with mr->page_size step increments, but the page_list stores individual struct page pointers, each representing PAGE_SIZE of memory.

ib_sg_to_page() has ensured that when i>=1 either a) SG[i-1].dma_end and SG[i].dma_addr are contiguous or b) SG[i-1].dma_end and SG[i].dma_addr are mr->page_size aligned.

This leads to incorrect iova-to-va conversion in scenarios:

1) page_size < PAGE_SIZE (e.g., MR: 4K, system: 64K): ibmr->iova = 0x1…

RHSA-2026:65334 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response kernel: Bluetooth: virtio_bt: clamp rx length before skb_put kernel: Bluetooth: serialize accept_q access kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove kernel: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER kernel: net: pull headers in qdisc_pkt_len_segs_init() kernel: wifi: nl80211: reject oversized EMA RNR lists kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() kernel: vfio/pci: Clean up DMABUFs before disabling function kernel: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync kernel: Bluetooth: ISO: fix UAF in iso_recv_frame kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp kernel: security/keys: fix missed RCU read section on lookup kernel: wifi: iwlwifi: mld: fix TSO segmentation explosion when AMSDU is disabled kernel: vfio/pci: Check BAR resources before exporting a DMABUF kernel: accel/qaic: Add overflow check to remap_pfn_range during mmap kernel: ixgbevf: fix use-after-free in VEPA multicast source pruning kernel: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb kernel: wifi: iwlwi…

RHSA-2026:67469 — Red Hat Security Advisory: kernel-rt security update

kernel: EDAC/bluefield: Fix potential integer overflow kernel: wifi: mac80211: Discard Beacon frames to non-broadcast address kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove kernel: wifi: nl80211: reject oversized EMA RNR lists kernel: blk-cgroup: fix UAF in __blkcg_rstat_flush() kernel: scsi: scsi_transport_fc: Widen FPIN pname walker counter to u32 kernel: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb kernel: net: qrtr: restrict socket creation to the initial network namespace kernel: Linux kernel: ath9k Wi-Fi driver use-after-free vulnerability leading to system crash kernel: dm-verity: fix buffer overflow in FEC calculation kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer

RLSA-2026:65334 — Important: kernel security, bug fix, and enhancement update

Affected: Rocky Linux:10: kernel

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation (CVE-2026-43133)

* kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334)

* kernel: Bluetooth: virtio_bt: clamp rx length before skb_put (CVE-2026-46123)

* kernel: Bluetooth: serialize accept_q access (CVE-2026-52918)

* kernel: net: pull headers in qdisc_pkt_len_segs_init() (CVE-2026-53091)

* kernel: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER (CVE-2026-53072)

* kernel: net: qrtr: fix refcount saturation and potential UAF in qrtr_port_remove (CVE-2026-52947)

* kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256)

* kernel: wifi: nl80211: reject oversized EMA RNR lists (CVE-2026-53182)

* kernel: Bluetooth: hci_sync: reject oversized Broadcast Announcement prepend (CVE-2026-53209)

* kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254)

* kernel: vfio/pci: Clean up DMABUFs before disabling function (CVE-2026-53322)

* kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975)

* kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)

* kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() (CVE-2026-63947)

* kernel: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync (CVE-2026-63944)…

UBUNTU-CVE-2026-72098

Affected: Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:Pro:18.04:LTS: linux, Ubuntu:Pro:18.04:LTS: linux-aws, Ubuntu:18.04:LTS: linux-aws-5.0 and 239 more

In the Linux kernel, the following vulnerability has been resolved: dm-verity: fix buffer overflow in FEC calculation There's a buffer overflow in dm-verity-fec: if (neras && *neras <= v->fec->roots) fio->erasures[(*neras)++] = i; This allows *neras to reach roots + 1 (the post-increment pushes it past roots). This value is then passed as no_eras to decode_rs8(). Inside the RS decoder (lib/reed_solomon/decode_rs.c:113-121), the erasure locator polynomial loop writes lambda[j] where j can reach nroots + 1 — one element past the end of lambda[] (which is sized nroots + 1, valid indices 0..nroots). The out-of-bounds write lands on syn[0], corrupting the syndrome buffer.

WID-SEC-W-2026-2852 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um root Rechte zu erlangen, um einen Denial of Service herbeizuführen oder einen nicht näher spezifizierten Angriff durchzuführen.