Topic
An update for kernel is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
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 (4.18.0). (BZ#2122230, BZ#2122267)
Security Fix(es):
- use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.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 FBIOPUT_VSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655)
- when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds (CVE-2021-33656)
- possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)
- use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)
- KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)
- KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196)
- netfilter: nf_conntrack_irc message handling issue (CVE-2022-2663)
- race condition in xfrm_probe_algs can lead to OOB read/write (CVE-2022-3028)
- media: em28xx: initialize refcount before kref_get (CVE-2022-3239)
- race condition in hugetlb_no_page() in mm/hugetlb.c (CVE-2022-3522)
- memory leak in ipv6_renew_options() (CVE-2022-3524)
- data races around icsk->icsk_af_ops in do_ipv6_setsockopt (CVE-2022-3566)
- data races around sk->sk_prot (CVE-2022-3567)
- memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (CVE-2022-3619)
- denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry (CVE-2022-3623)
- use-after-free after failed devlink reload in devlink_param_get (CVE-2022-3625)
- USB-accessible buffer overflow in brcmfmac (CVE-2022-3628)
- Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)
- l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference (CVE-2022-4129)
- igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets (CVE-2022-20141)
- Executable Space Protection Bypass (CVE-2022-25265)
- Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (CVE-2022-30594)
- unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)
- TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning (CVE-2022-39189)
- Report vmalloc UAF in dvb-core/dmxdev (CVE-2022-41218)
- u8 overflow problem in cfg80211_update_notlisted_nontrans() (CVE-2022-41674)
- use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)
- use-after-free in bss_ref_get in net/wireless/scan.c (CVE-2022-42720)
- BSS list corruption in cfg80211_add_nontrans_list 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 rawv6_push_pending_frames (CVE-2023-0394)
- use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)
- Soft lockup occurred during __page_mapcount (CVE-2023-1582)
- slab-out-of-bounds read vulnerabilities in cbq_classify (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.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
The system must be rebooted for this update to take effect.
Vulmon