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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:168263
[Rus]
Version
2
Class
patch
ALTXid
377985
Language
English
Severity
High
Title
RHSA-2021:3725 -- kernel security and bug fix update
Description
kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks.
kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c.
kernel: race condition for removal of the HCI controller.
kernel: powerpc: KVM guest OS users can cause host OS memory corruption.
[CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1975161).
Family
unix
Platform
Red Hat Enterprise Linux 7.4
Product
kernel
Reference
VENDOR: RHSA-2021:3725
VENDOR: RHSA-2021:3725
Id:
RHSA-2021:3725
Reference:
https://access.redhat.com/errata/RHSA-2021:3725
CVE: CVE-2021-22543
CVE: CVE-2021-22543
Id:
CVE-2021-22543
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22543
Comment
: An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
CVSSv2 Score:
4.6
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)
References:
https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584 (MISC)
[oss-security] 20210626 Re: CVE-2021-22543 - /dev/kvm LPE (MLIST)
https://security.netapp.com/advisory/ntap-20210708-0002/ (CONFIRM)
[debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update (MLIST)
[debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update (MLIST)
FEDORA-2021-fe826f202e ()
FEDORA-2021-95f2f1cfc7 ()
CVE: CVE-2021-22555
CVE: CVE-2021-22555
Id:
CVE-2021-22555
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22555
Comment
: A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space
CVSSv2 Score:
4.6
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d (MISC)
https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 (MISC)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 (MISC)
http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html (MISC)
https://security.netapp.com/advisory/ntap-20210805-0010/ (CONFIRM)
http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html (MISC)
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html (MISC)
http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html (MISC)
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html (MISC)
CVE: CVE-2021-32399
CVE: CVE-2021-32399
Id:
CVE-2021-32399
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32399
Comment
: net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller.
CVSSv2 Score:
4.4
Access vector:
LOCAL
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:P/I:P/A:P
CVSSv3 Score:
7
Attack vector:
LOCAL
Attack complexity:
HIGH
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
362 (Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'))
References:
https://github.com/torvalds/linux/commit/e2cb6b891ad2b8caa9131e3be70f45243df82a80 (MISC)
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e2cb6b891ad2b8caa9131e3be70f45243df82a80 (MISC)
[oss-security] 20210511 CVE-2021-32399 Linux device detach race condition (MLIST)
https://security.netapp.com/advisory/ntap-20210622-0006/ (CONFIRM)
[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update (MLIST)
[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update (MLIST)
CVE: CVE-2021-37576
CVE: CVE-2021-37576
Id:
CVE-2021-37576
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37576
Comment
: arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.
CVSSv2 Score:
7.2
Access vector:
LOCAL
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSSv3 Score:
7.8
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
HIGH
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE:
787 (Out-of-bounds Write)
References:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10a (MISC)
[oss-security] 20210727 Re: Linux kernel: powerpc: KVM guest to host memory corruption (MLIST)
https://security.netapp.com/advisory/ntap-20210917-0005/ (CONFIRM)
DSA-4978 (DEBIAN)
https://lore.kernel.org/linuxppc-dev/87im0x1lqi.fsf%40mpe.ellerman.id.au/T/#u ()
FEDORA-2021-817b3d47d2 ()
FEDORA-2021-12618d9b08 ()
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