View at Official debian advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2026-34085 unimportant priority: Debian including 1 source packages (fontconfig), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.
fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a one-byte out-of-bounds write, and potentially a crash or code execution. This is in FcFontCapabilities in fcfreetype.c.