Issued:
2020-11-03
Updated:
2020-11-03

RHSA-2020:4609 - Moderate: kernel-rt security and bug fix update

Synopsis

Moderate: kernel-rt security and bug fix update

Type/Severity

Security Advisory Moderate

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: use after free due to race condition in the video driver leads to local privilege escalation (CVE-2019-9458)

  • kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

  • kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg (CVE-2019-15925)

  • kernel: memory leak in ccp_run_sha_cmd() (CVE-2019-18808)

  • kernel: Denial Of Service in the __ipmi_bmc_register() (CVE-2019-19046)

  • kernel: out-of-bounds write in ext4_xattr_set_entry in fs/ext4/xattr.c (CVE-2019-19319)

  • Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)

  • kernel: use-after-free in ext4_put_super (CVE-2019-19447)

  • kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

  • kernel: race condition caused by a malicious USB device in the USB character device driver layer (CVE-2019-19537)

  • kernel: use-after-free in serial_ir_init_module() (CVE-2019-19543)

  • kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry (CVE-2019-19767)

  • kernel: use-after-free in debugfs_remove (CVE-2019-19770)

  • kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

  • kernel: possible use-after-free due to a race condition in cdev_get of char_dev.c (CVE-2020-0305)

  • kernel: out-of-bounds read in in vc_do_resize (CVE-2020-8647)

  • kernel: use-after-free in n_tty_receive_buf_common (CVE-2020-8648)

  • kernel: invalid read location in vgacon_invert_region (CVE-2020-8649)

  • kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)

  • kernel: SELinux netlink permission check bypass (CVE-2020-10751)

  • kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

  • kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

  • kernel: out-of-bounds write in xdp_umem_reg (CVE-2020-12659)

  • kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

  • kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)

  • kernel: referencing inode of removed superblock in get_futex_key() causes UAF (CVE-2020-14381)

  • kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)

  • kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information disclosure (CVE-2019-9455)

  • kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)

  • kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)

  • kernel: memory leak in af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c (CVE-2019-18809)

  • kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() (CVE-2019-19056)

  • kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS (CVE-2019-19062)

  • kernel: Two memory leaks in the rtl_usb_probe() (CVE-2019-19063)

  • kernel: A memory leak in the rtl8xxxu_submit_int_urb() (CVE-2019-19068)

  • kernel: A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c allows for a DoS (CVE-2019-19072)

  • kernel: information leak bug caused by a malicious USB device in the drivers/media/usb/ttusb-dec/ttusb_dec.c (CVE-2019-19533)

  • kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c (CVE-2019-20054)

  • kernel: possibility of memory disclosure when reading the file /proc/sys/kernel/rh_features (CVE-2020-10774)

  • kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)

  • kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)

Solution

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.

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.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Real Time8x86_64
Red Hat Enterprise Linux for Real Time for NFV8x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service8.8x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service8.6x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service8.4x86_64
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service8.8x86_64
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service8.6x86_64
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service8.4x86_64

Updated Packages

  • kernel-rt-debug-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-4.18.0-240.rt7.54.el8.src.rpm
  • kernel-rt-debuginfo-common-x86_64-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-kvm-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-core-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-modules-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-devel-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-modules-extra-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-devel-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debuginfo-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-debuginfo-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-core-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-kvm-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-modules-4.18.0-240.rt7.54.el8.x86_64.rpm
  • kernel-rt-debug-modules-extra-4.18.0-240.rt7.54.el8.x86_64.rpm

Fixes

CVEs

References

Additional information