CVE-2022-4128

A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.

A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.

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 in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
• 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)
• possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)
• KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)
• use-after-free in free_pipe_info() could lead to privilege escalation (CVE-2022-1882)
• 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)
• out-of-bounds read in fib_nh_match of the file net/ipv4/fib_semantics.c (CVE-2022-3435)
• 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)
• use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c (CVE-2022-3640)
• Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)
• mptcp: NULL pointer dereference in subflow traversal at disconnect time (CVE-2022-4128)
• 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)
• lockdown bypass using IMA (CVE-2022-21505)
• double free in usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c (CVE-2022-28388)
• network backend may cause Linux netfront to use freed SKBs (XSA-405) (CVE-2022-33743)
• 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)
• 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 due to race condition in qdisc_graft() (CVE-2023-0590)
• use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)
• denial of service in tipc_conn_close (CVE-2023-1382)

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 AlmaLinux Release Notes linked from the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
• net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
• 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)
• possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)
• KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)
• use-after-free in free_pipe_info() could lead to privilege escalation (CVE-2022-1882)
• 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)
• out-of-bounds read in fib_nh_match of the file net/ipv4/fib_semantics.c (CVE-2022-3435)
• 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)
• use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c (CVE-2022-3640)
• Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)
• mptcp: NULL pointer dereference in subflow traversal at disconnect time (CVE-2022-4128)
• 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)
• lockdown bypass using IMA (CVE-2022-21505)
• double free in usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c (CVE-2022-28388)
• network backend may cause Linux netfront to use freed SKBs (XSA-405) (CVE-2022-33743)
• 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)
• 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 due to race condition in qdisc_graft() (CVE-2023-0590)
• use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)
• denial of service in tipc_conn_close (CVE-2023-1382)

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 AlmaLinux Release Notes linked from the References section.