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ALSA-2026:61887 — 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: seccomp: passthrough uretprobe systemcall without filtering (CVE-2025-21834) * kernel: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() (CVE-2026-23003) * kernel: netfilter: nf_tables: Fix for duplicate device in netdev hooks (CVE-2026-43454) * kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() (CVE-2026-43450) * kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970) * kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120) * kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053) * kernel: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg (CVE-2026-53026) * kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185) * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196) * kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189) * kernel: mm/list_lru: drain before clearing xarray entry on reparent (CVE-2026-53153) * kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800) * kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397) * kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399) * kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026…

BELL-CVE-2026-64304

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

certfr-2026-avi-0982 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Elles permettent à un attaquant de p…

certfr-2026-avi-0982

fkie_cve-2026-64304

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

crypto: qat - validate RSA CRT component lengths

The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt() allocates half-size DMA buffers (key_sz / 2) and right-aligns each component with:

memcpy(dst + half_key_sz - len, src, len)

When a CRT component is larger than half_key_sz the subtraction underflows and memcpy writes past the DMA buffer, causing memory corruption.

Add a len > half_key_sz check next to the existing !len check for each of the five CRT components so the driver falls back to the non-CRT path instead of writing out of bounds.

GHSA-63x3-xxqc-x6vr

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

crypto: qat - validate RSA CRT component lengths

memcpy(dst + half_key_sz - len, src, len)

When a CRT component is larger than half_key_sz the subtraction underflows and memcpy writes past the DMA buffer, causing memory corruption.

Add a len > half_key_sz check next to the existing !len check for each of the five CRT components so the driver falls back to the non-CRT path instead of writing out of bounds.

msrc_CVE-2026-64304 — crypto: qat - validate RSA CRT component lengths

msrc_CVE-2026-64304

OESA-2026-3453 — kernel security update

Affected: openEuler:22.03-LTS-SP4: kernel

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

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

wifi: cfg80211: cancel rfkill_block work in wiphy_unregister()

There is a use-after-free error in cfg80211_shutdown_all_interfaces found by syzkaller:

BUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x213/0x220 Read of size 8 at addr ffff888112a78d98 by task kworker/0:5/5326 CPU: 0 UID: 0 PID: 5326 Comm: kworker/0:5 Not tainted 6.19.0-rc2 #2 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: events cfg80211_rfkill_block_work Call Trace: <TASK> dump_stack_lvl+0x116/0x1f0 print_report+0xcd/0x630 kasan_report+0xe0/0x110 cfg80211_shutdown_all_interfaces+0x213/0x220 cfg80211_rfkill_block_work+0x1e/0x30 process_one_work+0x9cf/0x1b70 worker_thread+0x6c8/0xf10 kthread+0x3c5/0x780 ret_from_fork+0x56d/0x700 ret_from_fork_asm+0x1a/0x30 </TASK>

The problem arises due to the rfkill_block work is not cancelled when wiphy is being unregistered. In order to fix the issue cancel the corresponding work in wiphy_unregister().

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.(CVE-2026-23336)

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

Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()

l2cap_ecred_reconf_rsp() casts the incoming data to struct l2cap_ecred_conn_rsp (the ECRED *connection* respons…

openSUSE-SU-2026:11476-1 — kernel-devel-7.1.7-1.1 on GA media

kernel-devel-7.1.7-1.1 on GA media

RHSA-2026:62568 — Red Hat Security Advisory: kernel security, bug fix, and enhancement update

kernel: Squashfs: sanity check symbolic link size kernel: ksm: use range-walk function to jump over holes in scan_get_next_rmap_item kernel: Bluetooth: SCO: fix race conditions in sco_sock_connect() kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels kernel: RDMA/mana: Validate rx_hash_key_len kernel: ipv6: fix possible UAF in icmpv6_rcv() kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() kernel: crypto: qat - validate RSA CRT component lengths kernel: net: bridge: stop fast-leave after deleting a port group kernel: vhost: reset the vring metadata cache on vring reconfiguration

RLSA-2026:61887 — 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: seccomp: passthrough uretprobe systemcall without filtering (CVE-2025-21834)

* kernel: ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv() (CVE-2026-23003)

* kernel: netfilter: nf_tables: Fix for duplicate device in netdev hooks (CVE-2026-43454)

* kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() (CVE-2026-43450)

* kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)

* kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)

* kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053)

* kernel: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg (CVE-2026-53026)

* kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)

* kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)

* kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)

* kernel: mm/list_lru: drain before clearing xarray entry on reparent (CVE-2026-53153)

* kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)

* kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)

* kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)

* kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)

* kernel: NF…

SUSE-SU-2026:23477-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-64304

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: crypto: qat - validate RSA CRT component lengths The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt() allocates half-size DMA buffers (key_sz / 2) and right-aligns each component with: memcpy(dst + half_key_sz - len, src, len) When a CRT component is larger than half_key_sz the subtraction underflows and memcpy writes past the DMA buffer, causing memory corruption. Add a len > half_key_sz check next to the existing !len check for each of the five CRT components so the driver falls back to the non-CRT path instead of writing out of bounds.

WID-SEC-W-2026-2527 — Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen, dazu können DoS-Angriffe, die Offenlegung von Informationen, die Beschädigung des Speichers oder die Umgehung von Sicherheitsmaßnahmen gehören.