CVE-2021-33655
First published: Fri Jul 08 2022(Updated: )
A flaw in the Linux Kernel framebuffer-based console driver found. When sending malicious data to kernel by ioctl FBIOPUT_VSCREENINFO, kernel will write memory out of bounds. To trigger the vulnerability user need to have access to console driver like /dev/fb0. Reference: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4</a>
Credit: securities@openeuler.org securities@openeuler.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-477.10.1.rt7.274.el8_8 | 0:4.18.0-477.10.1.rt7.274.el8_8 |
| redhat/kernel | <0:4.18.0-477.10.1.el8_8 | 0:4.18.0-477.10.1.el8_8 |
| redhat/kernel | <0:5.14.0-284.11.1.el9_2 | 0:5.14.0-284.11.1.el9_2 |
| redhat/kernel-rt | <0:5.14.0-284.11.1.rt14.296.el9_2 | 0:5.14.0-284.11.1.rt14.296.el9_2 |
| Linux Linux kernel | <5.19 | |
| Linux Linux kernel | =5.19-rc1 | |
| Linux Linux kernel | =5.19-rc2 | |
| Linux Linux kernel | =5.19-rc3 | |
| Linux Linux kernel | =5.19-rc4 | |
| Linux Linux kernel | =5.19-rc5 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| redhat/kernel | <5.18 | 5.18 |
| Google Android | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.10.11-1 6.11.2-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-33655 https://nvd.nist.gov/vuln/detail/CVE-2021-33655 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4
- https://bugzilla.redhat.com/show_bug.cgi?id=2108691
- https://access.redhat.com/errata/RHSA-2023:2736
- https://access.redhat.com/errata/RHSA-2023:2951
- https://access.redhat.com/errata/RHSA-2023:2458
- https://access.redhat.com/errata/RHSA-2023:2148
- https://access.redhat.com/security/cve/cve-2021-33655
- http://www.openwall.com/lists/oss-security/2022/07/19/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://www.debian.org/security/2022/dsa-5191
- https://launchpad.net/bugs/cve/CVE-2021-33655
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2109115
- https://access.redhat.com/errata/RHSA-2024:0930
- https://android.googlesource.com/kernel/common/+/52833e8fafb2ada5329f89b4e03a838ace0644bd
- https://android.googlesource.com/kernel/common/+/e8a2596dec19b4ed1d9a3b3a0dcc428b0468074a
- https://android.googlesource.com/kernel/common/+/b54f2a0d7bc35bec294c796e5b779a2c960b1145
- https://source.android.com/docs/security/bulletin/2023-03-01 (Advisory)
- https://git.kernel.org/linus/65a01e601dbba8b7a51a2677811f70f783766682
- https://git.kernel.org/linus/e64242caef18b4a5840b0e7a9bff37abd4f4f933
- https://git.kernel.org/linus/6c11df58fd1ac0aefcb3b227f72769272b939e56
- https://security-tracker.debian.org/tracker/CVE-2021-33655
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33655
- https://nvd.nist.gov/vuln/detail/CVE-2021-33655
- https://ubuntu.com/security/CVE-2021-33655
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/description
- agent/severity
- agent/remedy
- agent/weakness
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-33655
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/event
- agent/tags
- collector/android-source
- source/Android
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.19-rc1
- version/linux linux kernel/5.19-rc2
- version/linux linux kernel/5.19-rc3
- version/linux linux kernel/5.19-rc4
- version/linux linux kernel/5.19-rc5
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0
- version/debian debian linux/11.0
- vendor/google
- canonical/google android
- package-manager/debian