CLSA-2026-1788856499
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1788856499.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1788856499
- Upstream
CVE (2)
- Published
- 2026-09-08T08:35:09Z
- Modified
- 2026-10-26T09:32:03Z
- Summary
- Fix CVE(s): CVE-2026-54874, CVE-2026-63072
- 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 16.7 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/record/rec_layer_d1.c, ssl/record/record.h and ssl/record/ssl3_record.c.
- CVE-2026-54874
- SECURITY UPDATE: Heap buffer overflow in CMS key-agreement recipient
processing. For AES key wrap with padding the output size query returns
inlen-8 and drives the allocation, while the key-unwrap failure paths
then cleanse the full inlen, writing eight bytes past the allocation.
- debian/patches/CVE-2026-63072.patch: allocate at least the input length in cms_kek_cipher() in crypto/cms/cms_kari.c.
- debian/patches/CVE-2026-63072-test.patch: add the upstream regression test to test/cmsapitest.c and test/recipes/80-test_cmsapi.t.
- CVE-2026-63072
- 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 16.7 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:18.04 / libssl-dev
Package
- Name
- libssl-dev
- Purl
- pkg:deb/tuxcare/libssl-dev?distro=ubuntu-18.04
TuxCare:Ubuntu:18.04 / libssl-doc
Package
- Name
- libssl-doc
- Purl
- pkg:deb/tuxcare/libssl-doc?distro=ubuntu-18.04
TuxCare:Ubuntu:18.04 / libssl1.1
Package
- Name
- libssl1.1
- Purl
- pkg:deb/tuxcare/libssl1.1?distro=ubuntu-18.04