| Name | CVE-2022-23852 |
| Description | Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2904-1, DLA-2935-1, DSA-5073-1, ELA-556-1, ELA-574-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| expat (PTS) | jessie, jessie (lts) | 2.1.0-6+deb8u12 | fixed |
| stretch (security) | 2.2.0-2+deb9u5 | fixed | |
| stretch (lts), stretch | 2.2.0-2+deb9u9 | fixed | |
| buster, buster (lts) | 2.2.6-2+deb10u8 | fixed | |
| buster (security) | 2.2.6-2+deb10u7 | fixed | |
| bullseye | 2.2.10-2+deb11u5 | fixed | |
| bullseye (security) | 2.2.10-2+deb11u6 | fixed | |
| bookworm (security), bookworm | 2.5.0-1+deb12u1 | fixed | |
| sid, trixie | 2.6.4-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| expat | source | jessie | 2.1.0-6+deb8u8 | ELA-574-1 | ||
| expat | source | stretch | 2.2.0-2+deb9u5 | DLA-2935-1 | ||
| expat | source | buster | 2.2.6-2+deb10u2 | DSA-5073-1 | ||
| expat | source | bullseye | 2.2.10-2+deb11u1 | DSA-5073-1 | ||
| expat | source | (unstable) | 2.4.3-2 |
https://github.com/libexpat/libexpat/pull/550
Fixed by: https://github.com/libexpat/libexpat/commit/847a645152f5ebc10ac63b74b604d0c1a79fae40 (R_2_4_4)
Tests: https://github.com/libexpat/libexpat/commit/acf956f14bf79a5e6383a969aaffec98bfbc2e44