CVE-2020-29569
published 2020-12-15CVE-2020-29569: 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…
PriorityP343high8.8CVSS 3.1
AVLACLPRLUINSCCHIHAH
EPSS
0.39%
31.5th percentile
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.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 5.9.15-1 (bookworm) | linux 5.9.15-1 (bookworm) |
| linux | linux_kernel | >= 0 < 5.9.15-1 | 5.9.15-1 |
| linux | linux_kernel | >= 0 < 5.9.15-1 | 5.9.15-1 |
| linux | linux_kernel | >= 0 < 5.9.15-1 | 5.9.15-1 |
| linux | linux_kernel | >= 0 < 5.9.15-1 | 5.9.15-1 |
| linux | linux_kernel | >= 0 < 4.4.0-204.236 | 4.4.0-204.236 |
| linux | linux_kernel | >= 0 < 4.15.0-136.140 | 4.15.0-136.140 |
| linux | linux_kernel | >= 0 < 5.4.0-66.74 | 5.4.0-66.74 |
| linux | linux_kernel | >= 4.1.44 < 4.2 | 4.2 |
| linux | linux_kernel | >= 4.11.9 < 4.12 | 4.12 |
| linux | linux_kernel | >= 4.12 < 4.14.213 | 4.14.213 |
| linux | linux_kernel | >= 4.15 < 4.19.164 | 4.19.164 |
| linux | linux_kernel | >= 4.20 < 5.4.86 | 5.4.86 |
| linux | linux_kernel | >= 4.4.80 < 4.4.254 | 4.4.254 |
| linux | linux_kernel | >= 4.9.36 < 4.9.249 | 4.9.249 |
| linux | linux_kernel | >= 5.5 < 5.10.4 | 5.10.4 |
| msrc | cm1_kernel_5.4.91-1_on_cbl_mariner_1.0 | — | — |
| paloalto | pan-os | — | — |
| xen | xen | <= 4.14.1 | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv8.8HIGH
vendor_debian8.8HIGH
vendor_msrc8.8HIGH
vendor_ubuntu8.8HIGH
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GHSA
GHSA-6676-52pp-h5fg: An issue was discovered in the Linux kernel through 5
ghsa_unreviewed·2022-05-24
CVE-2020-29569 [HIGH] CWE-252 GHSA-6676-52pp-h5fg: An issue was discovered in the Linux kernel through 5
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.
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
osv·2021-03-16·CVSS 8.8
CVE-2020-29569 [HIGH] linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
Olivier Benjamin and Pawel Wieczorkiewicz discovered a race condition the
Xen paravirt block backend in the Linux kernel, leading to a use-after-free
vulnerability. An attacker in a guest VM could use this to cause a denial
of service in the host OS. (CVE-2020-29569)
It was discovered that the Marvell WiFi-Ex device driver in the Linux
kernel did not properly validate ad-hoc SSIDs. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2020-36158)
吴异 discovered that the NFS implementation in the Linux kernel did not
properly prevent access outside of an NFS export that is a subdirectory of
a file system. An attacker could possibly us
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
osv·2021-02-25·CVSS 4.1
CVE-2020-25656 [MEDIUM] linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
It was discovered that the console keyboard driver in the Linux kernel
contained a race condition. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-25656)
Minh Yuan discovered that the tty driver in the Linux kernel contained race
conditions when handling fonts. A local attacker could possibly use this to
expose sensitive information (kernel memory). (CVE-2020-25668)
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
Kiyin (尹亮) discovered that the perf subsystem in the Linu
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabil
osv·2021-02-25·CVSS 7.8
CVE-2020-25669 [HIGH] linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabil
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
It was discovered that the jfs file system implementation in the Linux
kernel contained an out-of-bounds read vulnerability. A local attacker
could use this to possibly cause a denial of service (system crash).
(CVE-2020-27815)
Shisong Qin and Bodong Zhao discovered that Speakup screen reader driver in
the Linux kernel did not correctly handle setting line discipline in s
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-ra
osv·2021-02-25·CVSS 7.8
CVE-2020-25669 [HIGH] linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-ra
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
It was discovered that the jfs file system implementation in the Linux
kernel contained an out-of-bounds read vulnerability. A local attacker
could use this to possibly cause a denial of service (system crash).
(CVE-2020-27815)
Shisong Qin and Bodong Zhao discovered that Speakup screen reader driver in
the Linux kernel did not correctly hand
OSV
CVE-2020-29569: An issue was discovered in the Linux kernel through 5
osv·2020-12-15·CVSS 8.8
CVE-2020-29569 [HIGH] CVE-2020-29569: An issue was discovered in the Linux kernel through 5
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.
Palo Alto
PAN-SA-2025-0006 Informational Bulletin: Impact of OSS CVEs in PAN-OS
vendor_paloalto·2025-02-12·CVSS 7.1
CVE-2015-5312 [HIGH] PAN-SA-2025-0006 Informational Bulletin: Impact of OSS CVEs in PAN-OS
PAN-SA-2025-0006 Informational Bulletin: Impact of OSS CVEs in PAN-OS
T he Palo Alto Networks Product Security Assurance team has evaluated the following open source software (OSS) CVEs as they relate to PAN-OS software. While PAN-OS software may include the
CVEs: CVE-2015-5312, CVE-2016-4607, CVE-2016-4608, CVE-2016-4609, CVE-2016-4738, CVE-2018-1111, CVE-2018-14634, CVE-2018-18653, CVE-2019-0145, CVE-2019-8331, CVE-2020-0599, CVE-2020-14343, CVE-2020-14779, CVE-2020-27844, CVE-2020-29569, CVE-2021-21315, CVE-2021-27853, CVE-2021-27854, CVE-2021-27861, CVE-2021-27862, CVE-2021-3618, CVE-2021-3711, CVE-2022-2097, CVE-2022-22816, CVE-2022-40303, CVE-2022-41723, CVE-2022-41741, CVE-2022-41742, CVE-2023-3247, CVE-2023-38408, CVE-2023-44466, CVE-2023-50781, CVE-2023-50782, CVE-2024-12084, CV
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-03-16·CVSS 8.8
CVE-2020-29569 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Olivier Benjamin and Pawel Wieczorkiewicz discovered a race condition the
Xen paravirt block backend in the Linux kernel, leading to a use-after-free
vulnerability. An attacker in a guest VM could use this to cause a denial
of service in the host OS. (CVE-2020-29569)
It was discovered that the Marvell WiFi-Ex device driver in the Linux
kernel did not properly validate ad-hoc SSIDs. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2020-36158)
吴异 discovered that the NFS implementation in the Linux kernel did not
properly prevent access outside of an NFS export that is a subdirectory of
a file system. An attacker could pos
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-02-25·CVSS 7.8
CVE-2020-25669 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
It was discovered that the jfs file system implementation in the Linux
kernel contained an out-of-bounds read vulnerability. A local attacker
could use this to possibly cause a denial of service (system crash).
(CVE-2020-27815)
Shisong Qin and Bodong Zhao discovered that Speakup screen reader driver in
the Linux kernel did not correctly handle setting line discipline in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2020-2
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-02-25·CVSS 7.8
CVE-2020-27815 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
It was discovered that the jfs file system implementation in the Linux
kernel contained an out-of-bounds read vulnerability. A local attacker
could use this to possibly cause a denial of service (system crash).
(CVE-2020-27815)
Shisong Qin and Bodong Zhao discovered that Speakup screen reader driver in
the Linux kernel did not correctly handle setting line discipline in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2020-2
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-02-25·CVSS 4.1
CVE-2020-25704 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the console keyboard driver in the Linux kernel
contained a race condition. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-25656)
Minh Yuan discovered that the tty driver in the Linux kernel contained race
conditions when handling fonts. A local attacker could possibly use this to
expose sensitive information (kernel memory). (CVE-2020-25668)
Bodong Zhao discovered a use-after-free in the Sun keyboard driver
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service or possibly execute arbitrary code.
(CVE-2020-25669)
Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel
Microsoft
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 stop
vendor_msrc·2020-12-08·CVSS 8.8
CVE-2020-29569 [HIGH] CWE-416 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 stop
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our c
Debian
CVE-2020-29569: linux - An issue was discovered in the Linux kernel through 5.10.1, as used with Xen thr...
vendor_debian·2020·CVSS 8.8
CVE-2020-29569 [HIGH] CVE-2020-29569: linux - An issue was discovered in the Linux kernel through 5.10.1, as used with Xen thr...
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.
Scope: local
bookworm: resolved (fixed in 5.9.15-1)
bullseye: resolved (fixed in 5.9.15-1)
forky: resolved (fixed in 5.9.15-1)
sid: resolved (fixed in 5.9.15-1)
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlhttps://security.gentoo.org/glsa/202107-30https://security.netapp.com/advisory/ntap-20210205-0001/https://www.debian.org/security/2021/dsa-4843https://xenbits.xenproject.org/xsa/advisory-350.htmlhttps://lists.debian.org/debian-lts-announce/2021/02/msg00018.htmlhttps://lists.debian.org/debian-lts-announce/2021/03/msg00010.htmlhttps://security.gentoo.org/glsa/202107-30https://security.netapp.com/advisory/ntap-20210205-0001/https://www.debian.org/security/2021/dsa-4843https://xenbits.xenproject.org/xsa/advisory-350.html
2020-12-15
Published