Description
Vim is an open source, command line text editor. Prior to 9.2.0662, the dump_prefixes() function in src/spell.c walks a spell-file prefix trie iteratively with a depth counter while dumping the prefixes that apply to a word. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (prefix[], arridx[], curi[]). A crafted .spl file, loaded when the user dumps the word list, can drive the descent arbitrarily deep, so the function writes past the end of those arrays. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0662.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vim | vim | < 9.2.0662 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | vim | 2:9.2.0782-1 | — |
| Debian 13 | vim | 2:9.1.1230-2+deb13u1 | — |
| Debian 12 | vim | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | vim | 2:9.1.2141-1ubuntu4.6 | USN-8500-1 |
| Ubuntu 25.10 | vim | 2:9.1.0967-1ubuntu6.8 | USN-8500-1 |
| Ubuntu 24.04 LTS | vim | 2:9.1.0016-1ubuntu7.17 | USN-8500-1 |
| Ubuntu 22.04 LTS | vim | 2:8.2.3995-1ubuntu2.33 | USN-8500-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | vim | 2:8.1.2269-1ubuntu5.32+esm9 | USN-8500-1 |
| Ubuntu Pro 18.04 LTS | vim | 2:8.0.1453-1ubuntu1.13+esm21 | USN-8500-1 |
| Ubuntu Pro 16.04 LTS | vim | 2:7.4.1689-3ubuntu1.5+esm36 | USN-8500-1 |
| Ubuntu Pro 14.04 LTS | vim | 2:7.4.052-1ubuntu3.1+esm30 | USN-8500-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | vim +3 | 2:9.1.083-9.el10_2.20 | RHSA-2026:66336 |
| RHEL 9 | vim +3 | 2:8.2.2637-26.el9_8.21 | RHSA-2026:66366 |
| RHEL 8 | vim +3 | 2:8.0.1763-31.el8_10.7 | RHSA-2026:66348 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | vim +8 | 9.2.780-1.hum1 | RHSA-2026:35387 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | xxd +6 | 2:9.1.083-9.el10_2.20 | ALSA-2026:66336 |
| AlmaLinux 9 | vim-X11 +4 | 2:8.2.2637-26.el9_8.21 | ALSA-2026:66366 |
| AlmaLinux 8 | vim-X11 +4 | 2:8.0.1763-31.el8_10.7 | ALSA-2026:66348 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | vim | 2:9.1.083-9.el10_2.20 | RLSA-2026:66336 |
| Rocky Linux 9 | vim | 2:8.2.2637-26.el9_8.21 | RLSA-2026:66366 |
| Rocky Linux 8 | vim | 2:8.0.1763-31.el8_10.7 | RLSA-2026:66348 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | vim | 9.2.0663-r0 | — |
| Alpine v3.23 | vim | 9.2.0854-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | xxd +6 | 2:9.2.725-1.amzn2023.0.1 | ALAS2023-2026-1940 |
| Amazon Linux 2 | xxd +6 | 2:9.0.2153-1.amzn2.0.11 | ALAS2-2026-3883 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | vim | 9.2.0735-1 | — |
Advisories 14
- WID-SEC-2026-1962 vim: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 1, 2026
- ALSA-2026:66366 Important: vim security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:66336 Important: vim security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:66348 Important: vim security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:66366 Red Hat Security Advisory: vim security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:66348 Red Hat Security Advisory: vim security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:66336 Red Hat Security Advisory: vim security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:35387 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RLSA-2026:66336 Important: vim security update Rocky Linux Security Advisories · Sep 11, 2026
- RLSA-2026:66366 Important: vim security update Rocky Linux Security Advisories · Sep 11, 2026
- RLSA-2026:66348 Important: vim security update Rocky Linux Security Advisories · Sep 11, 2026
- ALAS2-2026-3883 Important: vim security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 31, 2026
- ALAS2023-2026-1940 Important: vim security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 20, 2026
- USN-8500-1 vim vulnerabilities Ubuntu Security Notices (USN) · Jul 2, 2026