CVE-2021-28971: Null Pointer Dereference
First published: Mon Mar 22 2021(Updated: )
A flaw was found in the Linux kernel. On some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-348.rt7.130.el8 | 0:4.18.0-348.rt7.130.el8 |
| redhat/kernel | <0:4.18.0-348.el8 | 0:4.18.0-348.el8 |
| Linux Linux kernel | <=5.11.8 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Debian Debian Linux | =9.0 | |
| Netapp Cloud Backup | ||
| Netapp Solidfire Baseboard Management Controller Firmware | ||
| Netapp Aff A250 Firmware | ||
| Netapp Aff A250 | ||
| Netapp Aff 500f Firmware | ||
| Netapp Aff 500f | ||
| All of | ||
| Netapp Aff A250 Firmware | ||
| Netapp Aff A250 | ||
| All of | ||
| Netapp Aff 500f Firmware | ||
| Netapp Aff 500f | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.5-1 6.11.7-1 |
Remedy
Mitigation for this issue is either not available or the currently available options does not 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-2021-28971 https://nvd.nist.gov/vuln/detail/CVE-2021-28971
- https://bugzilla.redhat.com/show_bug.cgi?id=1941784
- https://access.redhat.com/errata/RHSA-2021:4140
- https://access.redhat.com/errata/RHSA-2021:4356
- https://access.redhat.com/security/cve/cve-2021-28971
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d88d05a9e0b6d9356e97129d4ff9942d765f46ea
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
- https://security.netapp.com/advisory/ntap-20210430-0003/
- https://launchpad.net/bugs/cve/CVE-2021-28971
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1941785
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
- https://git.kernel.org/linus/d88d05a9e0b6d9356e97129d4ff9942d765f46ea
- https://security-tracker.debian.org/tracker/CVE-2021-28971
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28971
- https://nvd.nist.gov/vuln/detail/CVE-2021-28971
- https://ubuntu.com/security/CVE-2021-28971
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