CVE-2026-11824

Name	CVE-2026-11824
Description	SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1139960

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
sqlite3 (PTS)	bullseye	3.34.1-3	vulnerable
	bullseye (security)	3.34.1-3+deb11u1	vulnerable
	bookworm	3.40.1-2+deb12u2	vulnerable
	trixie	3.46.1-7+deb13u1	vulnerable
	forky	3.46.1-9	vulnerable
	sid	3.53.3-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
sqlite3	source	(unstable)	3.53.2-1			1139960

Notes

[trixie] - sqlite3 <no-dsa> (Minor issue)
[bookworm] - sqlite3 <postponed> (Minor issue)
[bullseye] - sqlite3 <postponed> (Minor issue)
https://sqlite.org/src/info/061febcf41ca
https://sqlite.org/src/info/4a5ad516ea93