CVE-2021-26708: Race Condition
First published: Fri Feb 05 2021(Updated: )
A flaw was found in the Linux kernel. Wrong locking in the AF_VSOCK socket can cause a local privilege escalation, bypassing SMEP and SMAP. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 |
| Linux Linux kernel | >=5.5<5.10.13 | |
| Netapp Aff Baseboard Management Controller | ||
| Netapp Cloud Backup | ||
| Netapp Fas Baseboard Management Controller | ||
| Netapp Solidfire \& Hci Management Node | ||
| Netapp Solidfire Baseboard Management Controller | ||
| Netapp Baseboard Management Controller 500f Firmware | <15.3 | |
| Netapp Baseboard Management Controller 500f | ||
| Netapp Baseboard Management Controller A250 Firmware | <15.3 | |
| Netapp Baseboard Management Controller A250 | ||
| Netapp Hci H410c Firmware | ||
| Netapp Hci H410c | ||
| Netapp 500f | ||
| Netapp A250 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-26708 https://nvd.nist.gov/vuln/detail/CVE-2021-26708 https://www.openwall.com/lists/oss-security/2021/02/04/5
- https://bugzilla.redhat.com/show_bug.cgi?id=1925588
- https://access.redhat.com/errata/RHSA-2021:1081
- https://access.redhat.com/errata/RHSA-2021:1093
- https://access.redhat.com/security/cve/cve-2021-26708
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1925595
- https://www.openwall.com/lists/oss-security/2021/02/04/5
- http://www.openwall.com/lists/oss-security/2021/02/05/6
- http://www.openwall.com/lists/oss-security/2021/04/09/2
- http://www.openwall.com/lists/oss-security/2022/01/25/14
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13
- https://security.netapp.com/advisory/ntap-20210312-0008/
Frequently Asked Questions
What is the severity of CVE-2021-26708?
The severity of CVE-2021-26708 is high with a severity value of 7.
How does CVE-2021-26708 affect the Linux kernel?
CVE-2021-26708 is a local privilege escalation vulnerability that affects the Linux kernel before version 5.10.13.
What is the impact of CVE-2021-26708?
CVE-2021-26708 can be exploited by an attacker with local access to escalate their privileges on a vulnerable system.
How can I fix CVE-2021-26708?
Apply the latest security patches or upgrade to a version of the Linux kernel that is not affected by CVE-2021-26708.
Where can I find more information about CVE-2021-26708?
Additional information about CVE-2021-26708 can be found in the references provided: [Reference 1](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446), [Reference 2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1925595), [Reference 3](https://www.openwall.com/lists/oss-security/2021/02/04/5).
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- canonical/netapp cloud backup
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- canonical/netapp solidfire \& hci management node
- canonical/netapp solidfire baseboard management controller
- canonical/netapp baseboard management controller 500f firmware
- canonical/netapp baseboard management controller 500f
- canonical/netapp baseboard management controller a250 firmware
- canonical/netapp baseboard management controller a250
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- canonical/netapp hci h410c
- canonical/netapp 500f
- canonical/netapp a250