CLSA-2026-1788951485
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1788951485.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1788951485
- Upstream
- Published
- 2026-09-09T10:58:16Z
- Modified
- 2026-10-26T09:32:02Z
- Summary
- Fix CVE(s): CVE-2026-54874
- Details
-
- SECURITY UPDATE: Unbounded memory retention in the DTLS record layer.
dtls1_buffer_record() adopted the entire live read buffer for every queued
record and allocated a fresh one, so a peer could pin roughly 17.7 KB of
heap per queued record regardless of how small the record actually was,
up to the 100-entry queue limit, exhausting memory on the endpoint.
- debian/patches/CVE-2026-54874.patch: copy only the received record into a right-sized allocation and restore it on retrieval, leaving the live read buffer in place, in ssl/d1_pkt.c, ssl/d1_lib.c and ssl/dtls1.h.
- CVE-2026-54874
- SECURITY UPDATE: Unbounded memory retention in the DTLS record layer.
dtls1_buffer_record() adopted the entire live read buffer for every queued
record and allocated a fresh one, so a peer could pin roughly 17.7 KB of
heap per queued record regardless of how small the record actually was,
up to the 100-entry queue limit, exhausting memory on the endpoint.
- References
Affected packages
TuxCare:Ubuntu:16.04 / libssl-dev
Package
- Name
- libssl-dev
- Purl
- pkg:deb/tuxcare/libssl-dev?distro=ubuntu-16.04
TuxCare:Ubuntu:16.04 / libssl-doc
Package
- Name
- libssl-doc
- Purl
- pkg:deb/tuxcare/libssl-doc?distro=ubuntu-16.04
TuxCare:Ubuntu:16.04 / libssl1.0.0
Package
- Name
- libssl1.0.0
- Purl
- pkg:deb/tuxcare/libssl1.0.0?distro=ubuntu-16.04