Integer Truncation Leading to Heap Corruption in GNU Aspell
GNU Aspell contains an integer truncation vulnerability in the WritableDict::add() function in modules/speller/default/writable.cpp. When loading a personal wordlist, the word length is stored as a single byte, causing truncation for words whose length is a multiple of 256. This leads to heap corruption. An attacker can exploit this by convincing a user to run aspell with a crafted personal wordlist containing such a word, resulting in denial of service. This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3.
CVE-2026-75820
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-75820
Aspell
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/GNUAspell/aspell",
"vendor": "GNU",
"modules": [
"WritableDict::add()"
],
"product": "Aspell",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "0.60.8.3",
"versionType": "semver"
}
],
"programFiles": [
"modules/speller/default/writable.cpp"
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-75820
Source reference:
/cveMetadata/cveId
Publisher severity
low
Source reference: /containers/cna/metrics
- Event
- #9222 · Revision 1
- Added to Heist Feed
- Publisher date