vulnerability
Ubuntu: USN-7975-1 (CVE-2026-23490): pyasn1 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jan 16, 2026 | Jan 23, 2026 | Jan 28, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jan 16, 2026
Added
Jan 23, 2026
Modified
Jan 28, 2026
Description
It was discovered that pyasn1 incorrectly handled malformed RELATIVE-OIDs
with excessive continuation octets. An attacker could possibly use this
issue to cause pyasn1 to consume memory, leading to a denial of service.
Solution
ubuntu-upgrade-python3-pyasn1
References
- CVE-2026-23490
- https://attackerkb.com/topics/CVE-2026-23490
- CWE-770
- UBUNTU-USN-7975-1
- URL-https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2
- URL-https://github.com/pyasn1/pyasn1/security/advisories/GHSA-63vm-454h-vhhq
- URL-https://ubuntu.com/security/notices/USN-7975-1
- URL-https://www.cve.org/CVERecord?id=CVE-2026-23490
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