security advisorydebianimportant
Warisjeet Singh discovered that Exim, a mail transport agent, does not properly handle PROXY frames whose declared payload length is too short for the claimed address family, which may result in information disclosure in configurations with SUPPORT_PROXY and 'host_proxy' set. For the oldstable distribution (bookworm), this problem has been fixed. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6309-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso May 29, 2026 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : exim4 CVE ID : CVE-2026-48840 Warisjeet Singh discovered that Exim, a mail transport agent, does not properly handle PROXY frames whose declared payload length is too short for the claimed address family, which may result in information disclosure in configurations with SUPPORT_PROXY and 'host_proxy' set. For the oldstable distribution (bookworm), this problem has been fixed in version 4.96-15+deb12u10. For the stable distribution (trixie), this problem has been fixed in version 4.98.2-1+deb13u3. We recommend that you upgrade your exim4 packages. For the detailed security status of exim4 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/exim4 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Debian Security Advisory DSA-6309-1 fixes Exim4 security issue causing information disclosure for users with SUPPORT_PROXY.. debian advisory, exim4 patch, security update exim4. . Severity: Important. LinuxSecurity.com Team
May 29, 2026
•Important
Debian