NFA regex engine NULL pointer dereference affects Vim < 9.2.0137
CVE-2026-32249 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-32249, released March 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| vim · Debian 13.5 (trixie) | 2:9.1.1230-2+deb13u1 | DEBIAN-CVE-2026-32249 | Mar 12, 2026 |
| vim · Debian 14 | 2:9.2.0218-1 | DEBIAN-CVE-2026-32249 | Mar 12, 2026 |
| vim · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-athena · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-athena 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-athena · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-athena 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-common · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-common 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-common · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-common 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-common · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-data · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-debuginfo · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-debugsource · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-default-editor · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-enhanced · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-enhanced-debuginfo · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-filesystem · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-gtk3 · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-gtk3 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-gtk3 · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-gtk3 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-gui-common · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-gui-common 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-gui-common · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-gui-common 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-minimal · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-minimal-debuginfo · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| vim-motif · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-motif 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-motif · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-motif 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-nox · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-nox 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-nox · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-nox 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-runtime · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-runtime 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-runtime · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-runtime 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| vim-tiny · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | vim-tiny 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| vim-tiny · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | vim-tiny 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| xxd · Ubuntu 24.04.5 LTS (noble) | 2:9.1.0016-1ubuntu7.11 | xxd 2:9.1.0016-1ubuntu7.11 | Apr 30, 2026 |
| xxd · Ubuntu 25.10 (questing) | 2:9.1.0967-1ubuntu6.2 | xxd 2:9.1.0967-1ubuntu6.2 | Apr 30, 2026 |
| xxd · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
| xxd-debuginfo · amzn 2023 | 2:9.2.240-1.amzn2023.0.2 | ALAS2023-2026-1584 | Apr 13, 2026 |
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