DEBIAN-CVE-2026-107348
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-107348
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-107348.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-107348
- Upstream
- CVE-2026-107348
- Published
- 2026-10-14T18:17:25Z
- Modified
- 2026-10-23T17:47:32Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.
- References
Affected packages
Debian:12 / pgbouncer
Package
- Name
- pgbouncer
- Purl
- pkg:deb/debian/pgbouncer?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / pgbouncer
Package
- Name
- pgbouncer
- Purl
- pkg:deb/debian/pgbouncer?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / pgbouncer
Package
- Name
- pgbouncer
- Purl
- pkg:deb/debian/pgbouncer?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1.26.1-1