The kernel packages contain the Linux kernel, the core of any Linux operating system. The following packages have been upgraded to a later upstream version: kernel . Security Fix: * use-after-free caused by l2cap_reassemble_sdu in net/bluetooth/l2cap_core.c * net/ulp: use-after-free in listening ULP sockets * hw: cpu: AMD CPUs may transiently execute beyond unconditional direct branch * malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory * when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds * possible race condition in drivers/tty/tty_buffers.c * use-after-free in ath9k_htc_probe_device could cause an escalation of privileges * KVM: NULL pointer dereference in kvm_mmu_invpcid_gva * KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks * netfilter: nf_conntrack_irc message handling issue * race condition in xfrm_probe_algs can lead to OOB read/write * media: em28xx: initialize refcount before kref_get * race condition in hugetlb_no_page in mm/hugetlb.c * memory leak in ipv6_renew_options * data races around icsk-icsk_af_ops in do_ipv6_setsockopt * data races around sk-sk_prot * memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c * denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry * use-after-free after failed devlink reload in devlink_param_get * USB-accessible buffer overflow in brcmfmac * Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed * l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference * igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets * Executable Space Protection Bypass * Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option * unmap_mapping_range race with munmap on VM_PFNMAP mappings leads to stale TLB entry * TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning * Report vmalloc UAF in dvb-core/dmxdev * u8 overflow problem in cfg80211_update_notlisted_nontrans * use-after-free related to leaf anon_vma double reuse * use-after-free in bss_ref_get in net/wireless/scan.c * BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c * Denial of service in beacon protection for P2P-device * memory corruption in usbmon driver * NULL pointer dereference in traffic control subsystem * NULL pointer dereference in rawv6_push_pending_frames * use-after-free caused by invalid pointer hostname in fs/cifs/connect.c * Soft lockup occurred during __page_mapcount * slab-out-of-bounds read vulnerabilities in cbq_classify For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from the References section.