[CLSA-2026:1781269872] Fix CVE(s): CVE-2026-45185
Type:
security
Severity:
Important
Release date:
2026-06-12 13:13:18 UTC
Description:
* SECURITY UPDATE: TLS close_notify use-after-free during active BDAT/CHUNKING transfer that can lead to unauthenticated remote code execution - debian/patches/CVE-2026-45185.patch: introduce tls_close_notify() that pops the BDAT receive layer, reinstalls plaintext receive callbacks via a new smtp_rcv_cleartext() helper, then re-pushes the BDAT layer before closing the TLS channel; switch the GnuTLS and OpenSSL receive paths from a bare tls_close() to tls_close_notify() - CVE-2026-45185
CVEs fixed:
Updated packages:
  • exim4_4.93-13ubuntu1.12+tuxcare.els2_all.deb
    sha:a2fca705030f1059969568b00006b12bc7c14fbf
  • exim4-base_4.93-13ubuntu1.12+tuxcare.els2_amd64.deb
    sha:c656095685f67c0c3f109a3c7c486b51fd48c1d6
  • exim4-config_4.93-13ubuntu1.12+tuxcare.els2_all.deb
    sha:2bd8dbd92ab2ecab7ec65017baefdf02ca2f5c5f
  • exim4-daemon-heavy_4.93-13ubuntu1.12+tuxcare.els2_amd64.deb
    sha:fcd04c289a87dd63543f758ee922a80dcdecda57
  • exim4-daemon-light_4.93-13ubuntu1.12+tuxcare.els2_amd64.deb
    sha:6dbeb103833c0012191b02cbfb11e889a215eebc
  • exim4-dev_4.93-13ubuntu1.12+tuxcare.els2_amd64.deb
    sha:a8f8aabd3bf65bb6bb6e1a57b729a3d7b2a1ce32
  • eximon4_4.93-13ubuntu1.12+tuxcare.els2_amd64.deb
    sha:f630dcb19b3f1262ef2f73be3c961ca26b496ebf
Notes:
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