RedHat: RHSA-2019-0831:01 Important: kernel-alt security and bug fix update
Summary
The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: lack of check for mmap minimum address in expand_downwards in
mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms
(CVE-2019-9213)
* kernel: use-after-free in ucma_leave_multicast in
drivers/infiniband/core/ucma.c (CVE-2018-14734)
* kernel: Unprivileged users able to inspect kernel stacks of arbitrary
tasks (CVE-2018-17972)
* kernel: TLB flush happens too late on mremap (CVE-2018-18281)
* kernel: Type confusion in drivers/tty/n_tty.c allows for a denial of
service (CVE-2018-18386)
* kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397)
* kernel: Integer overflow in the alarm_timer_nsleep function
(CVE-2018-13053)
* kernel: NULL pointer dereference in xfs_da_shrink_inode function
(CVE-2018-13094)
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):
* Failed to boot with ftrace=function in kvm with 2vcpu (BZ#1501024)
* [ALT-7.5][x86_64] perf test 63 - inet_pton fails on x86_64 (BZ#1518836)
* BUG: potential out-of-bounds string access when forcing a SELinux label
on a file (BZ#1595706)
* stack out-of-bounds in smb{2,3}_create_lease_buf() on SMB2/SMB3 mounts
(BZ#1598757)
* [ALT-7.6][KVM][PANIC] ltp/lite proc01 - Unable to handle kernel paging
request at virtual address ffff7fe000200018 (BZ#1623193)
* Kernel lock up due to read/write lock (BZ#1636261)
* [RHEL-ALT] Fix potential Spectre v1 in tty code (BZ#1639679)
* [Huawei AArch64 7.6 Bug] HNS3: Vlan on HNS3 NIC cannot communicate
(BZ#1639713)
* [RHEL7.6-ALT][AWS] backport "nvme: update timeout module parameter type"
(BZ#1654958)
* ignore STABLE_FLAG of rmap_item->address in rmap_walk_ksm (BZ#1663565)
* RHEL-Alt-7.6 - kernel: zcrypt: fix specification exception on z196 at ap
probe (BZ#1670018)
* [Huawei AArch64 7.6 Bug] Flock over NFSv3 failed (BZ#1670650)
* [Huawei AArch64 7.6/7.6-z Bug] HNS3: if a single transmit packet(skb) has
more than 8 frags, will cause the NIC to be unavailable (BZ#1677643)
* krb5{,i,p} doesn't work with older enctypes on aarch64 (BZ#1678922)
Users of kernel are advised to upgrade to these updated packages, which fix
these bugs.
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2018-13053 https://access.redhat.com/security/cve/CVE-2018-13094 https://access.redhat.com/security/cve/CVE-2018-14734 https://access.redhat.com/security/cve/CVE-2018-17972 https://access.redhat.com/security/cve/CVE-2018-18281 https://access.redhat.com/security/cve/CVE-2018-18386 https://access.redhat.com/security/cve/CVE-2018-18397 https://access.redhat.com/security/cve/CVE-2019-9213 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
kernel-alt-4.14.0-115.7.1.el7a.src.rpm
aarch64:
kernel-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debug-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-devel-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-headers-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-tools-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.7.1.el7a.aarch64.rpm
perf-4.14.0-115.7.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
python-perf-4.14.0-115.7.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
noarch:
kernel-abi-whitelists-4.14.0-115.7.1.el7a.noarch.rpm
kernel-doc-4.14.0-115.7.1.el7a.noarch.rpm
ppc64le:
kernel-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.7.1.el7a.ppc64le.rpm
perf-4.14.0-115.7.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
python-perf-4.14.0-115.7.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
s390x:
kernel-4.14.0-115.7.1.el7a.s390x.rpm
kernel-debug-4.14.0-115.7.1.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.7.1.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.7.1.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.7.1.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.7.1.el7a.s390x.rpm
kernel-devel-4.14.0-115.7.1.el7a.s390x.rpm
kernel-headers-4.14.0-115.7.1.el7a.s390x.rpm
kernel-kdump-4.14.0-115.7.1.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.7.1.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.7.1.el7a.s390x.rpm
perf-4.14.0-115.7.1.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.7.1.el7a.s390x.rpm
python-perf-4.14.0-115.7.1.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.7.1.el7a.s390x.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
kernel-debug-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.7.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.7.1.el7a.aarch64.rpm
noarch:
kernel-doc-4.14.0-115.7.1.el7a.noarch.rpm
ppc64le:
kernel-debug-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.7.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.7.1.el7a.ppc64le.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le
Bugs Fixed
1597747 - CVE-2018-13053 kernel: Integer overflow in the alarm_timer_nsleep function
1597771 - CVE-2018-13094 kernel: NULL pointer dereference in xfs_da_shrink_inode function
1611005 - CVE-2018-14734 kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c
1636349 - CVE-2018-17972 kernel: Unprivileged users able to inspect kernel stacks of arbitrary tasks
1640598 - CVE-2018-18386 kernel: Type confusion in drivers/tty/n_tty.c allows for a denial of service
1641548 - CVE-2018-18397 kernel: userfaultfd bypasses tmpfs file permissions
1645121 - CVE-2018-18281 kernel: TLB flush happens too late on mremap
1686136 - CVE-2019-9213 kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms