RHSA-2023:2736: Important: kernel-rt security and bug fix update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.Security Fix(es): use-after-free caused by l2capreassemblesdu() in net/bluetooth/l2capcore.c (CVE-2022-3564) net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461) hw: cpu: AMD CPUs may transiently execute beyond unconditional direct branch (CVE-2021-26341) malicious data for FBIOPUTVSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655) when setting font with malicious data by ioctl PIOFONT, kernel will write memory out of bounds (CVE-2021-33656) possible race condition in drivers/tty/ttybuffers.c (CVE-2022-1462) use-after-free in ath9khtcprobedevice() could cause an escalation of privileges (CVE-2022-1679) KVM: NULL pointer dereference in kvmmmuinvpcidgva (CVE-2022-1789) KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196) netfilter: nfconntrackirc message handling issue (CVE-2022-2663) race condition in xfrmprobealgs can lead to OOB read/write (CVE-2022-3028) media: em28xx: initialize refcount before krefget (CVE-2022-3239) race condition in hugetlbnopage() in mm/hugetlb.c (CVE-2022-3522) memory leak in ipv6renewoptions() (CVE-2022-3524) data races around icsk->icskafops in doipv6setsockopt (CVE-2022-3566) data races around sk->skprot (CVE-2022-3567) memory leak in l2caprecvacldata of the file net/bluetooth/l2capcore.c (CVE-2022-3619) denial of service in followpagepte in mm/gup.c due to poisoned pte entry (CVE-2022-3623) use-after-free after failed devlink reload in devlinkparamget (CVE-2022-3625) USB-accessible buffer overflow in brcmfmac (CVE-2022-3628) Double-free in split2MBgttentry when function intelgvtdmamapguestpage failed (CVE-2022-3707) l2tp: missing lock when clearing skuserdata can lead to NULL pointer dereference (CVE-2022-4129) igmp: use-after-free in ipcheckmcrcu when opening and closing inet sockets (CVE-2022-20141) Executable Space Protection Bypass (CVE-2022-25265) Unprivileged users may use PTRACESEIZE to set PTRACEOSUSPENDSECCOMP option (CVE-2022-30594) unmapmappingrange() race with munmap() on VMPFNMAP mappings leads to stale TLB entry (CVE-2022-39188) TLB flush operations are mishandled in certain KVMVCPUPREEMPTED leading to guest malfunctioning (CVE-2022-39189) Report vmalloc UAF in dvb-core/dmxdev (CVE-2022-41218) u8 overflow problem in cfg80211updatenotlistednontrans() (CVE-2022-41674) use-after-free related to leaf anonvma double reuse (CVE-2022-42703) use-after-free in bssrefget in net/wireless/scan.c (CVE-2022-42720) BSS list corruption in cfg80211addnontranslist in net/wireless/scan.c (CVE-2022-42721) Denial of service in beacon protection for P2P-device (CVE-2022-42722) memory corruption in usbmon driver (CVE-2022-43750) NULL pointer dereference in traffic control subsystem (CVE-2022-47929) NULL pointer dereference in rawv6pushpendingframes (CVE-2023-0394) use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195) Soft lockup occurred during pagemapcount (CVE-2023-1582) slab-out-of-bounds read vulnerabilities in cbqclassify (CVE-2023-23454) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) 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.