7.8
CWE
362 667
Advisory Published
CVE Published
Updated

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 SoftwareAffected VersionHow 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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Parent vulnerabilities

(Appears in the following advisories)

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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