CVE-2026-75820

NameCVE-2026-75820
DescriptionGNU 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
aspell (PTS)bookworm0.60.8-4vulnerable
trixie0.60.8.1-4vulnerable
forky, sid0.60.8.2-3vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
aspellsource(unstable)(unfixed)

Notes

https://cert.pl/en/posts/2026/10/CVE-2026-75818
Fixed by: https://github.com/GNUAspell/aspell/commit/782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d

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