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Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libtasn1-toolsUpgrade libtasn1-develUpgrade libtasn1 | Jun 25, 2026 | Jun 23, 2026 |
| Alpine Linux | — | Upgrade libtasn1 | Jan 13, 2026 | Jan 7, 2026 |
| Amazon Linux Ami 2 | — | Upgrade libtasn1Upgrade libtasn1-toolsUpgrade libtasn1-debuginfoUpgrade libtasn1-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade libtasn1-develUpgrade libtasn1-debugsourceUpgrade libtasn1Upgrade libtasn1-debuginfoUpgrade libtasn1-toolsUpgrade libtasn1-tools-debuginfo | Feb 10, 2026 | Jan 7, 2026 |
| Debian | — | Upgrade libtasn1-6 | Jul 23, 2026 | Jul 23, 2026 |
| Freebsd | — | Upgrade libtasn1 | Jan 27, 2026 | Jan 11, 2026 |
| Huawei Euleros 2_0_sp10 | — | Upgrade libtasn1 | Mar 17, 2026 | Mar 16, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade libtasn1 | Mar 17, 2026 | Mar 16, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade libtasn1 | Mar 10, 2026 | Mar 10, 2026 |
| Oracle_linux | — | Upgrade libtasn1-toolsUpgrade libtasn1Upgrade libtasn1-devel | Oct 22, 2026 | Jan 7, 2026 |
| Redhat_linux | — | Upgrade libtasn1-debugsourceUpgrade libtasn1-toolsNo solution existsUpgrade libtasn1-debuginfoUpgrade libtasn1Upgrade libtasn1-develUpgrade libtasn1-tools-debuginfo | Jun 25, 2026 | Jan 7, 2026 |
| Rocky_linux | — | Upgrade libtasn1-toolsUpgrade libtasn1-tools-debuginfoUpgrade libtasn1-debuginfoUpgrade libtasn1Upgrade libtasn1-debugsourceUpgrade libtasn1-devel | Jun 29, 2026 | Jun 24, 2026 |
| Ubuntu | — | Upgrade libtasn1-6Upgrade libtasn1-6 (Ubuntu Pro) | Jan 13, 2026 | Jan 8, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jan 7, 2026 |
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