============================================================ Changelog-Zusammenfassung: 6.18.49 (longterm, Branch 6.18) ============================================================ Veröffentlicht: 2026-09-02 Quelle: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.18.49 83 Commits, davon ca. 67 Fixes Meistbetroffene Bereiche: crypto: 9 usb: 7 KVM: 7 xfrm: 6 HID: 5 selinux: 5 USB: 3 drm/xe/guc_ads: 3 KI-Zusammenfassung: Linux 6.18.49 (longterm) delivers a broad round of stability and hardening fixes across USB, ALSA, crypto, networking, KVM/SEV, io_uring, HID, and filesystem subsystems, with heavy emphasis on the xfrm/netfilter/TCP-AO stack and SELinux policy parsing hardening. Notable security fixes include an OOB write in ALSA's snd_usbmidi_novation_output(), a use-after-free in usb_device handling during usbdev_release(), a CCM AAD buffer underallocation and authentication-truncation key leak in crypto (qce/xfrm), and multiple SELinux fixes enforcing stricter permission-value validation against class permission counts (with one prior fix reverted due to regressions). KVM SEV received several fixes around VMSA tracking and guest-memory handling, while xfrm/espintcp and TCP-AO saw numerous use-after-free and lock-inversion corrections. Additional fixes address RDMA rxe out-of-bounds and UAF issues, veth OOB queue access, io_uring futex/eventfd handling, and various driver-level UAF/OOB bugs in USB, HID, and fuse subsystems. Alle Änderungen (83): - usb: usbfs: fix use-after-free of usb_device in usbdev_release() - wifi: mt76: mt7925: ensure tx headroom in usb_sdio_tx_prepare_skb - USB: c67x00: fix use-after-free in c67x00_add_iso_urb() - USB: serial: spcp8x5: drop broken carrier detect support - USB: serial: option: fix slab OOB read in interrupt URB callback - ALSA: usb-audio: Complete cleanup after system-resume errors - ALSA: usb-audio: fix OOB write in snd_usbmidi_novation_output() - usb: core: Strengthen error handling in hub_hub_status() - usb: core: Add lock to usb_wakeup_notification() - KVM: s390: vsie: zero stale crypto bits - crypto: qce - Remove unsafe/deprecated algorithms - crypto: mxs-dcp - fix source scatterlist length access - crypto: qce - fix CCM AAD buffer underallocation - crypto: krb5 - use kfree_sensitive() for derived key buffers - crypto: atmel-tdes - use scatterlist length before DMA mapping - crypto: qcom-rng - Allow zero as a random number - crypto: qcom-rng - Remove crypto_rng interface - crypto: qcom-rng - Enable clock in hwrng case - crypto: virtio - bound the akcipher result length - kunit: irq: Continue increasing hrtimer interval for longer - mm/swap: reject swapon() on filesystem-level encrypted files - netfilter: nf_tables: don't queue packet path object notifications - netfilter: nft_set_pipapo_avx2: add missing vzeroupper - vxlan: keep the last remote linked during FDB flush - batman-adv: reject unrepresentable multicast TVLV offsets - ipv6: seg6: clear IPv4 control block on IPIP decapsulation - net: bridge: mcast: fix use-after-free of a master VLAN's multicast context - xfrm: bound nat keepalive state collection - xfrm: fix xfrm_state_construct() auth-trunc leak - xfrm: ah6: validate routing header segments_left - xfrm: avoid lock inversion in nat keepalive work - xfrm: drop ESP-in-TCP packets with no ingress device - xfrm: espintcp: fix UAF during close - net/tcp-ao: fix use-after-free of current_key on reconnect to another peer - tcp: fix AO info use-after-free in tcp_ao_connect_init() - net/tcp: fix TCP-AO key deletion in VRFs - x86/CPU/AMD: Carve out a Zen5 models range - gtp: serialize PDP context updates - tls: device: fix out-of-bounds write in tls_append_frag() - KVM: SEV: Wire up kvm_x86_ops.gmem_xxx() if and only if CONFIG_KVM_AMD_SEV=y - KVM: SEV: Mark vCPU RUNNABLE after AP_CREATE, even if VMSA is unusable - KVM: SEV: Extract loading of guest-provided VMSA to a separate helper - KVM: SEV: Track the GPA of the guest-controlled VMSA used for SNP guests - KVM: SEV: Drop FOLL_WRITE for encrypted region registration - usb: gadget: f_tcm: keep port count until LUN teardown completes - usb: usbtest: disable dynamic ID support - fuse: fix invalidate lock leak on open O_TRUNC DAX failure - fuse: fix invalidate lock leak on setattr writeback failure - xhci: dbgtty: Fix unregister on tty_alloc_driver() failure - xhci: dbgtty: Fix unregister on tty_register_driver() failure - usb: xhci: Handle USB3 port events when there is one roothub - usb: xhci: Handle bogus TRB pointers in Missed Service Error events - accessibility: speakup: unregister tty ldisc on later init failures - fpga: dfl: fme: add error handling - ksmbd: harden file lifetime during session teardown - HID: ft260: fix stack-use-after-return write in I2C read race - HID: ft260: validate i2c input report length - HID: asus: fix missing hid_is_usb() check - HID: asus: simplify RGB init sequence - HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event() - io_uring: defer eventfd signaling when queued from a wakeup handler - io_uring/rsrc: improve regbuf iov validation - io_uring: simplify IORING_SETUP_DEFER_TASKRUN && !SQPOLL check - io_uring/futex: only mark private futex waits as inflight - powerpc/hv-gpci: fix preempt count leak in sysfs show paths - veth: fix OOB txq access in veth_poll() with asymmetric queue counts - selinux: switch two allocations to use kzalloc_objs() - ASoC: nau8821: Cancel pending work before suspend - riscv: Fix register corruption from uninitialized cregs on error - bpf: Fix use-after-free in offloaded map/prog info fill - ASoC: nau8821: Cancel delayed work on component remove - selinux: require a class's permission values to cover its permission count - selinux: reject a permission value exceeding the class permission count - selinux: more strict policy parsing - selinux: use u16 for security classes - Revert "selinux: reject a permission value exceeding the class permission count" - nvme-tcp: fix usage of page_frag_cache - KVM: x86/mmu: Check write tracking in all address spaces - drm/xe/guc_ads: use uncached mapping for UM queue BO - drm/xe/guc_ads: allocate UM queues in VRAM on dGFX - drm/xe/guc_ads: allocate UM queues in a separate BO - RDMA/rxe: Fix OOB in free_rd_atomic_resources() - RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp