CVE-2020-29569
Summary
| CVE | CVE-2020-29569 |
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| State | PUBLIC |
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| Assigner | [email protected] |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2020-12-15 17:15:00 UTC |
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| Updated | 2023-01-19 15:53:00 UTC |
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| Description | An issue was discovered in the Linux kernel through 5.10.1, as used with Xen through 4.14.x. The Linux kernel PV block backend expects the kernel thread handler to reset ring->xenblkd to NULL when stopped. However, the handler may not have time to run if the frontend quickly toggles between the states connect and disconnect. As a consequence, the block backend may re-use a pointer after it was freed. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend. Privilege escalation and information leaks cannot be ruled out. This only affects systems with a Linux blkback. |
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NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|
| [SECURITY] [DLA 2557-1] linux-4.19 security update |
MLIST |
lists.debian.org |
Mailing List, Third Party Advisory |
| [SECURITY] [DLA 2586-1] linux security update |
MLIST |
lists.debian.org |
Mailing List, Third Party Advisory |
| CVE-2020-29569 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security |
CONFIRM |
security.netapp.com |
Third Party Advisory |
| Debian -- Security Information -- DSA-4843-1 linux |
DEBIAN |
www.debian.org |
Third Party Advisory |
| XSA-350 - Xen Security Advisories |
MISC |
xenbits.xenproject.org |
Patch, Vendor Advisory |
| Xen: Multiple vulnerabilities (GLSA 202107-30) — Gentoo security |
GENTOO |
security.gentoo.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 198295 Ubuntu Security Notification for Linux, Linux-aws, Linux-kvm, Linux-lts-xenial, Linux-raspi2, (USN-4876-1)
- 353100 Amazon Linux Security Advisory for kernel : ALAC2012-2021-024
- 353101 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2021-025
- 353102 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2021-026
- 353132 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-019
- 377779 Citrix XenServer Security Updates (CTX286756)
- 501426 Alpine Linux Security Update for linux-lts
- 504121 Alpine Linux Security Update for linux-lts
- 6140377 AWS Bottlerocket Security Update for kernel (GHSA-j5p6-xjqh-w48p)
- 671380 EulerOS Security Update for kernel (EulerOS-SA-2022-1292)
- 671535 EulerOS Security Update for kernel (EulerOS-SA-2022-1508)
- 710038 Gentoo Linux Xen Multiple vulnerabilities (GLSA 202107-30)
- 750373 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0241-1)
- 750428 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0075-1)
- 900040 CBL-Mariner Linux Security Update for kernel 5.4.91
- 902948 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3684)
- 906169 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3684-1)
