Synopsis
Important: kernel-alt security and bug fix update
Type/Severity
Security Advisory: Important
Topic
An update for kernel-alt is now available for Red Hat Enterprise Linux 7.
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-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
- Kernel: speculative bounds check bypass store (CVE-2018-3693)
- kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559)
- kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846)
- kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr (CVE-2019-8912)
- kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)
- kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)
- kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver (CVE-2019-14816)
- kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c (CVE-2019-17133)
- kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS (CVE-2019-14814)
- kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS (CVE-2019-14815)
- kernel: (powerpc) incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)
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.
Bug Fix(es):
- Kernel panic on job cleanup, related to SyS_getdents64 (BZ#1702057)
- Kernel modules generated incorrectly when system is localized to non-English language (BZ#1705285)
- RHEL-Alt-7.6 - Fixup tlbie vs store ordering issue on POWER9 (BZ#1756270)
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.
Affected Products
-
Red Hat Enterprise Linux for ARM 64 7 aarch64
-
Red Hat Enterprise Linux for Power 9 7 ppc64le
-
Red Hat Enterprise Linux for IBM System z (Structure A) 7 s390x
Fixes
- BZ - 1581650 - CVE-2018-3693 Kernel: speculative bounds check bypass store
- BZ - 1641878 - CVE-2018-18559 kernel: Use-after-free due to race condition in AF_PACKET implementation
- BZ - 1678685 - CVE-2019-8912 kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr
- BZ - 1703063 - CVE-2019-11487 kernel: Count overflow in FUSE request leading to use-after-free issues.
- BZ - 1713059 - CVE-2019-3846 kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c
- BZ - 1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c
- BZ - 1744130 - CVE-2019-14814 kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS
- BZ - 1744137 - CVE-2019-14815 kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS
- BZ - 1744149 - CVE-2019-14816 kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver
- BZ - 1771909 - CVE-2019-17133 kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c
- BZ - 1777825 - CVE-2019-18660 kernel: (powerpc) incomplete Spectre-RSB mitigation leads to information exposure
CVEs
References
Vulmon