[CLSA-2026:1788856499] Fix CVE(s): CVE-2026-54874, CVE-2026-63072
Type:
security
Severity:
Important
Release date:
2026-09-08 08:35:09 UTC
Description:
* 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
Updated packages:
  • libssl-dev_1.1.1-1ubuntu2.1~18.04.23+tuxcare.els11_amd64.deb
    sha:d63a7dc1f67855e4d98d8beb02906ae0a15d5406
  • libssl-doc_1.1.1-1ubuntu2.1~18.04.23+tuxcare.els11_all.deb
    sha:90f192f60c5930dd285c9ec2a0caa8badf103443
  • libssl1.1_1.1.1-1ubuntu2.1~18.04.23+tuxcare.els11_amd64.deb
    sha:67b180ff8330eb2e5c1231cb69d84832960c68b3
  • openssl_1.1.1-1ubuntu2.1~18.04.23+tuxcare.els11_amd64.deb
    sha:b1bacc2e3bbdb98501d220a08a1e2c8ef849645e
Notes:
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