Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 510
Alerts This Week
Warning Icon 1 510

RedHat: RHSA-2020-4431-01 Moderate: Kernel Security Fixes and Enhancements

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
Ubuntu has released a significant security patch for the system kernel, addressing vulnerabilities related to memory corruption and user privilege elevation.
An update for kernel is now available for Red Hat Enterprise Linux 8

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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: use after free 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 (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 (CVE-2020-0305)
* kernel: out-of-bounds read in in vc_do_resize function (CVE-2020-8647)
* kernel: use-after-free in n_tty_receive_buf_common function (CVE-2020-8648)
* kernel: invalid read location in vgacon_invert_region function (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 (CVE-2020-11565)
* kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)
* kernel: buffer overflow in mt76_add_fragment function (CVE-2020-12465)
* kernel: xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write which could result in crash and data coruption (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 dlpar_parse_cc_property (CVE-2019-12614)
* 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 (CVE-2019-18809)
* kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function (CVE-2019-19056)
* kernel: memory leak in the crypto_report() function (CVE-2019-19062)
* kernel: Two memory leaks in the rtl_usb_probe() function (CVE-2019-19063)
* kernel: A memory leak in the rtl8xxxu_submit_int_urb() function (CVE-2019-19068)
* kernel: A memory leak in the predicate_parse() function (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() (CVE-2019-20054)
* kernel: kernel stack information leak on s390/s390x (CVE-2020-10773)
* 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)

Topics%20covered

Topics Covered

security advisory kernel update local privilege escalation Red Hat Enterprise Linux moderate severity memory leak Denial of Service

References

https://access.redhat.com/security/cve/CVE-2019-9455 https://access.redhat.com/security/cve/CVE-2019-9458 https://access.redhat.com/security/cve/CVE-2019-12614 https://access.redhat.com/security/cve/CVE-2019-15917 https://access.redhat.com/security/cve/CVE-2019-15925 https://access.redhat.com/security/cve/CVE-2019-16231 https://access.redhat.com/security/cve/CVE-2019-16233 https://access.redhat.com/security/cve/CVE-2019-18808 https://access.redhat.com/security/cve/CVE-2019-18809 https://access.redhat.com/security/cve/CVE-2019-19046 https://access.redhat.com/security/cve/CVE-2019-19056 https://access.redhat.com/security/cve/CVE-2019-19062 https://access.redhat.com/security/cve/CVE-2019-19063 https://access.redhat.com/security/cve/CVE-2019-19068 https://access.redhat.com/security/cve/CVE-2019-19072 https://access.redhat.com/security/cve/CVE-2019-19319 https://access.redhat.com/security/cve/CVE-2019-19332 https://access.redhat.com/security/cve/CVE-2019-19447 https://access.redhat.com/security/cve/CVE-2019-19524 https://access.redhat.com/security/cve/CVE-2019-19533 https://access.redhat.com/security/cve/CVE-2019-19537 https://access.redhat.com/security/cve/CVE-2019-19543 https://access.redhat.com/security/cve/CVE-2019-19767 Read the Full Advisory

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kernel-4.18.0-240.el8.src.rpm
aarch64: bpftool-4.18.0-240.el8.aarch64.rpm bpftool-debuginfo-4.18.0-240.el8.aarch64.rpm kernel-4.18.0-240.el8.aarch64.rpm kernel-core-4.18.0-240.el8.aarch64.rpm kernel-cross-headers-4.18.0-240.el8.aarch64.rpm kernel-debug-4.18.0-240.el8.aarch64.rpm kernel-debug-core-4.18.0-240.el8.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.el8.aarch64.rpm kernel-debug-devel-4.18.0-240.el8.aarch64.rpm kernel-debug-modules-4.18.0-240.el8.aarch64.rpm kernel-debug-modules-extra-4.18.0-240.el8.aarch64.rpm kernel-debuginfo-4.18.0-240.el8.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.el8.aarch64.rpm kernel-devel-4.18.0-240.el8.aarch64.rpm kernel-headers-4.18.0-240.el8.aarch64.rpm kernel-modules-4.18.0-240.el8.aarch64.rpm kernel-modules-extra-4.18.0-240.el8.aarch64.rpm kernel-tools-4.18.0-240.el8.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.el8.aarch64.rpm kernel-tools-libs-4.18.0-240.el8.aarch64.rpm perf-4.18.0-240.el8.aarch64.rpm perf-debuginfo-4.18.0-240.el8.aarch64.rpm python3-perf-4.18.0-240.el8.aarch64.rpm python3-perf-debuginfo-4.18.0-240.el8.aarch64.rpm
noarch: kernel-abi-whitelists-4.18.0-240.el8.noarch.rpm kernel-doc-4.18.0-240.el8.noarch.rpm
ppc64le: bpftool-4.18.0-240.el8.ppc64le.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:4431-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4431
Issue date: 2020-11-03

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update local privilege escalation Red Hat Enterprise Linux moderate severity memory leak Denial of Service

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1660798 - NFSv4.2: security label of mount point shows as "unlabeled_t" for ~30 seconds after mounting

1718176 - CVE-2019-12614 kernel: null pointer dereference in dlpar_parse_cc_property in arch/powerrc/platforms/pseries/dlpar.c causing denial of service

1759052 - CVE-2019-15925 kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg

1760100 - CVE-2019-15917 kernel: use-after-free in drivers/bluetooth/hci_ldisc.c

1760310 - CVE-2019-16231 kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c

1760420 - CVE-2019-16233 kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c

1774946 - CVE-2019-19072 kernel: A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c allows for a DoS

1774963 - CVE-2019-19068 kernel: A memory leak in the rtl8xxxu_submit_int_urb() function in drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c allows for a DoS

1774988 - CVE-2019-19046 kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c

1775015 - CVE-2019-19063 kernel: Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c allow for a DoS

1775021 - CVE-2019-19062 kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS

Read the Full Advisory

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.