CVE-2021-39926: Buffer Overflow
First published: Fri Nov 19 2021(Updated: )
Buffer overflow in the Bluetooth HCI_ISO dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file
Credit: cve@gitlab.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/wireshark | 2.6.20-0+deb10u4 2.6.20-0+deb10u7 3.4.10-0+deb11u1 4.0.6-1~deb12u1 4.0.10-1 | |
| Wireshark Wireshark | >=3.4.0<=3.4.9 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 |
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Reference Links
- https://gitlab.com/wireshark/wireshark/-/issues/17649
- https://www.wireshark.org/security/wnpa-sec-2021-08.html
- https://security-tracker.debian.org/tracker/CVE-2021-39926
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39926.json
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
- https://security.gentoo.org/glsa/202210-04
- https://www.debian.org/security/2021/dsa-5019
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/
Frequently Asked Questions
What is CVE-2021-39926?
CVE-2021-39926 is a vulnerability that allows denial of service via packet injection or crafted capture file in the Bluetooth HCI_ISO dissector in Wireshark versions 3.4.0 to 3.4.9.
How severe is CVE-2021-39926?
CVE-2021-39926 is classified as a high severity vulnerability with a severity rating of 7.5 out of 10.
Which software versions are affected by CVE-2021-39926?
Wireshark versions 3.4.0 to 3.4.9 are affected by CVE-2021-39926.
How can CVE-2021-39926 be fixed?
To fix CVE-2021-39926, update your Wireshark software to version 3.4.10 or later.
Where can I find more information about CVE-2021-39926?
More information about CVE-2021-39926 can be found at the following references: [GitLab Issue](https://gitlab.com/wireshark/wireshark/-/issues/17649), [Wireshark Security Advisory](https://www.wireshark.org/security/wnpa-sec-2021-08.html), [Debian Security Tracker](https://security-tracker.debian.org/tracker/CVE-2021-39926).
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- agent/severity
- agent/references
- agent/author
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- vendor/wireshark
- canonical/wireshark wireshark
- version/wireshark wireshark/3.4.0
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- vendor/fedoraproject
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- version/fedoraproject fedora/34
- version/fedoraproject fedora/35
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