CVE-2021-3347: Use After Free
First published: Thu Jan 28 2021(Updated: )
A flaw was found in the Linux kernel. A use after free issue in PI futex may lead to code execution. Upstream patch: <a href="https://github.com/torvalds/linux/commit/c64396cc36c6e60704ab06c1fb1c4a46179c9120">https://github.com/torvalds/linux/commit/c64396cc36c6e60704ab06c1fb1c4a46179c9120</a> References: <a href="https://www.openwall.com/lists/oss-security/2021/01/29/1">https://www.openwall.com/lists/oss-security/2021/01/29/1</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.32-754.41.2.el6 | 0:2.6.32-754.41.2.el6 |
| redhat/kernel-rt | <0:3.10.0-1160.31.1.rt56.1169.el7 | 0:3.10.0-1160.31.1.rt56.1169.el7 |
| redhat/kernel-alt | <0:4.14.0-115.36.1.el7a | 0:4.14.0-115.36.1.el7a |
| redhat/kernel | <0:3.10.0-1160.31.1.el7 | 0:3.10.0-1160.31.1.el7 |
| redhat/kernel | <0:3.10.0-327.100.1.el7 | 0:3.10.0-327.100.1.el7 |
| redhat/kernel | <0:3.10.0-514.90.2.el7 | 0:3.10.0-514.90.2.el7 |
| redhat/kernel | <0:3.10.0-693.90.2.el7 | 0:3.10.0-693.90.2.el7 |
| redhat/kernel | <0:3.10.0-957.78.2.el7 | 0:3.10.0-957.78.2.el7 |
| redhat/kernel | <0:3.10.0-1062.56.1.el7 | 0:3.10.0-1062.56.1.el7 |
| redhat/kernel-rt | <0:4.18.0-240.22.1.rt7.77.el8_3 | 0:4.18.0-240.22.1.rt7.77.el8_3 |
| redhat/kernel | <0:4.18.0-240.22.1.el8_3 | 0:4.18.0-240.22.1.el8_3 |
| redhat/kernel | <0:4.18.0-147.48.1.el8_1 | 0:4.18.0-147.48.1.el8_1 |
| redhat/kernel-rt | <0:4.18.0-193.51.1.rt13.101.el8_2 | 0:4.18.0-193.51.1.rt13.101.el8_2 |
| redhat/kernel | <0:4.18.0-193.51.1.el8_2 | 0:4.18.0-193.51.1.el8_2 |
| IBM Data Risk Manager | <=2.0.6 | |
| Android | ||
| Linux Kernel | <=5.10.11 | |
| Debian Linux | =9.0 | |
| Debian Linux | =10.0 | |
| Red Hat Fedora | =32 | |
| Red Hat Fedora | =33 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-3347 https://nvd.nist.gov/vuln/detail/CVE-2021-3347
- https://bugzilla.redhat.com/show_bug.cgi?id=1922249
- https://access.redhat.com/errata/RHSA-2021:2735
- https://access.redhat.com/errata/RHSA-2021:2316
- https://access.redhat.com/errata/RHSA-2021:1379
- https://access.redhat.com/errata/RHSA-2021:2285
- https://access.redhat.com/errata/RHSA-2021:2314
- https://access.redhat.com/errata/RHSA-2021:3399
- https://access.redhat.com/errata/RHSA-2021:2733
- https://access.redhat.com/errata/RHSA-2021:2732
- https://access.redhat.com/errata/RHSA-2021:2730
- https://access.redhat.com/errata/RHSA-2021:2731
- https://access.redhat.com/errata/RHSA-2021:3522
- https://access.redhat.com/errata/RHSA-2021:3523
- https://access.redhat.com/errata/RHSA-2021:1081
- https://access.redhat.com/errata/RHSA-2021:1093
- https://access.redhat.com/errata/RHSA-2021:2099
- https://access.redhat.com/errata/RHSA-2021:2106
- https://access.redhat.com/errata/RHSA-2021:1279
- https://access.redhat.com/errata/RHSA-2021:1272
- https://access.redhat.com/errata/RHSA-2021:1295
- https://access.redhat.com/security/cve/cve-2021-3347
- http://www.openwall.com/lists/oss-security/2021/01/29/4
- http://www.openwall.com/lists/oss-security/2021/01/29/5
- http://www.openwall.com/lists/oss-security/2021/02/01/4
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b79c55201f02ffd675e1231d731365e335c307
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb3f7f1b03d5913b3f9d4236a488aa7774dfe9
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2156ac1934166d6deb6cd0f6ffc4c1076ec63697
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34b1a1ce1458f50ef27c54e28eb9b1947012907a
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6ccc84f917d33312eb2846bd7b567639f585ad6d
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c5cade200ab9a2a3be9e7f32a752c8d86b502ec7
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c64396cc36c6e60704ab06c1fb1c4a46179c9120
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2dac39d93987f7de1e20b3988c8685523247ae2
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
- https://security.netapp.com/advisory/ntap-20210304-0005/
- https://www.debian.org/security/2021/dsa-4843
- https://www.openwall.com/lists/oss-security/2021/01/29/1
- https://www.openwall.com/lists/oss-security/2021/01/29/3
- https://launchpad.net/bugs/cve/CVE-2021-3347
- https://github.com/torvalds/linux/commit/c64396cc36c6e60704ab06c1fb1c4a46179c9120
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1922251
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CXAVDAK4RLAHBHHGEPL73UFXSI6BXQ7Q/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOBMXDJABYE76RKNBAWA2E4TSSBX7CSJ/
- https://android.googlesource.com/kernel/common/+/6e7bfa046de8
- https://source.android.com/docs/security/bulletin/2021-08-01 (Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/195798
- https://www.ibm.com/support/pages/node/6497499 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2021-3347
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3347
- https://nvd.nist.gov/vuln/detail/CVE-2021-3347
- https://ubuntu.com/security/CVE-2021-3347
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2021-3347?
CVE-2021-3347 has a high severity level due to the potential for code execution through a use after free vulnerability.
How do I fix CVE-2021-3347?
To fix CVE-2021-3347, apply the latest kernel patches and updates provided by your distribution.
Which Linux versions are affected by CVE-2021-3347?
CVE-2021-3347 affects multiple versions of the Linux kernel, particularly those prior to the patched versions listed by Red Hat and other distributions.
What are the potential impacts of CVE-2021-3347?
The potential impacts of CVE-2021-3347 include arbitrary code execution, which could lead to system compromise or unauthorized access.
Is there an exploit available for CVE-2021-3347?
At the time of reporting, there was potential for exploitation, but specific exploit details require careful management to prevent misuse.
- collector/redhat-cve
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-3347
- agent/severity
- agent/weakness
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/references
- agent/last-modified-date
- agent/trending
- agent/source
- agent/author
- collector/ibm-support
- source/IBM
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/android-source
- source/Android
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/ibm
- canonical/ibm data risk manager
- version/ibm data risk manager/2.0.6
- vendor/google
- canonical/android
- vendor/linux
- canonical/linux kernel
- version/linux kernel/5.10.11
- vendor/debian
- canonical/debian linux
- version/debian linux/9.0
- version/debian linux/10.0
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/32
- version/red hat fedora/33
- package-manager/debian