Synopsis:          Important: kernel security and bug fix update
Advisory ID:       SLSA-2021:3801-1
Issue Date:        2021-10-12
CVE Numbers:       CVE-2021-22543
                   CVE-2021-3653
                   CVE-2021-3656
                   CVE-2021-37576
--

Security Fix(es):

* kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO
checks (CVE-2021-22543)

* kernel: powerpc: KVM guest OS users can cause host OS memory corruption
(CVE-2021-37576)

* kernel: SVM nested virtualization issue in KVM (AVIC support)
(CVE-2021-3653)

* kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)
(CVE-2021-3656)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE

Bug Fix(es):

* Kernel panic due to double fault with DLM reporting for socket error
"sk_err=32/0"

* "MFW indication via attention" message getting logged frequently after
every 5 minutes

* lpfc fails to discovery in pt2pt with "2754 PRLI failure DID:0000EF
Status:x9/x91e00, data: x0"

* pcpu_get_vm_areas using most memory from VmallocUsed

* SL 7.9.z [qedf driver] Racing condition between qedf_cleanup_fcport and
releasing command after timeout

* [Azure] SL 7.9 reports GPU/IB topology incorrectly on some Azure SKUs

* [stable guest ABI]Hot add CPU after migration cause guest hang

* i40e driver crash at  RIP: i40e_config_vf_promiscuous_mode+0x165

* [nfs] Performance issue since commit 5a4f6f11951e

* [kernel] Indefinite waiting for RCU callback while removing cgroup


---
SL7
 x86_64
  bpftool-3.10.0-1160.45.1.el7.x86_64.rpm
  bpftool-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-abi-whitelists-3.10.0-1160.45.1.el7.noarch.rpm
  kernel-debug-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-debug-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-debug-devel-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-debuginfo-common-x86_64-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-devel-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-doc-3.10.0-1160.45.1.el7.noarch.rpm
  kernel-headers-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-tools-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-tools-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-tools-libs-3.10.0-1160.45.1.el7.x86_64.rpm
  kernel-tools-libs-devel-3.10.0-1160.45.1.el7.x86_64.rpm 
  perf-3.10.0-1160.45.1.el7.x86_64.rpm
  perf-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
  python-perf-3.10.0-1160.45.1.el7.x86_64.rpm
  python-perf-debuginfo-3.10.0-1160.45.1.el7.x86_64.rpm
 
noarch
  kernel-abi-whitelists-3.10.0-1160.45.1.el7.noarch.rpm
  kernel-doc-3.10.0-1160.45.1.el7.noarch.rpm
--

- Scientific Linux Development Team

Scientific Linux SL7.x Kernel Security Advisory: Multiple Vulnerabilities

kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) * kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-3...

Summary

Important: kernel security and bug fix update



Security Fixes

* kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
* kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)
* kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653)
* kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE

Severity
Advisory ID: SLSA-2021:3801-1
Issued Date: : 2021-10-12
CVE Numbers: CVE-2021-22543
CVE-2021-3653
CVE-2021-3656

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