The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Issue summary: A TLS server that calls SSL_set_SSL_CTX() to switch a connection to a different SSL_CTX     part way through a handshake may access memory beyond the end of an internal array if the replacement     context knows about more provider signature algorithms than the context the connection was created from.
    Applications which never call SSL_set_SSL_CTX() are not affected. Impact summary: A remote peer may be     able to cause a small out-of-bounds read, and in some circumstances a fixed-value out-of-bounds write, on     the server heap. This may lead to a Denial of Service. CWE: CWE-787: Out-of-bounds Write Description: A     TLS connection records how many certificate slots it has when it is created, taken from the SSL_CTX that     created it: the built-in certificate types plus one slot for each provider TLS-SIGALG entry that context     was aware of. That count sizes an internal array of per-slot certificate validity flags. An application     may replace a connection's SSL_CTX part way through the handshake by calling SSL_set_SSL_CTX(), most     commonly from a servername callback in order to serve a different virtual host. Doing so did not refresh     the recorded count. A provider signature algorithm's slot index is its position in the list of whichever     context resolves it, so if the replacement context is aware of more of them than the original, an     algorithm offered by the peer can resolve to an index beyond the end of the array. Processing the peer's     signature algorithms then reads one four byte word past the end for each such algorithm and, where the     word read is zero, writes a fixed value over it. A peer offering many of them can corrupt heap metadata     and abort the process. Only provider signature algorithms which occupy one of the excess slots, and which     the server also has configured, have this effect. Codepoints the replacement context does not recognise     are discarded without being resolved to a slot, and provider signature algorithms are usable only from TLS     1.3. The two contexts must therefore be aware of different numbers of provider signature algorithms, which     requires separate library contexts, a provider loaded between the two being created, or providers which     differ in what they advertise - in 4.0, for example, the default provider advertises SM2 where the FIPS     provider does not. A deployment meeting the condition is also unable to negotiate the affected algorithms     with legitimate clients, since the same stale count hides the corresponding certificates, so the     misconfiguration is likely to be noticed. For that reason, and because the configuration is not the     default, this issue has been assessed as Low severity. FIPS impact: no No FIPS modules are affected by     this issue as the affected code is outside the OpenSSL FIPS module boundary. (CVE-2026-72897)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-72897

high Nessus Plugin ID 351202

Version 1.7

Version 1.6

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.7 Oct 16, 2026, 7:34 PM Detection (updated detection logic) Plugin Feed: 202610161934
Version 1.6 Oct 15, 2026, 3:37 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610150337
Version 1.5 Oct 14, 2026, 10:44 PM Plugin metadata Detection (updated detection logic) Plugin Feed: 202610142244
Version 1.4 Oct 9, 2026, 2:01 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610091401
Version 1.3 Sep 30, 2026, 4:36 PM Detection (updated detection logic) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P") CVSS metrics ("CVSSv2 score" set to 5.8) Plugin metadata Plugin Feed: 202609301636
Version 1.2 Sep 30, 2026, 6:31 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202609300631
Version 1.1 Sep 30, 2026, 1:44 AM New Plugin Feed: 202609300144