CVE catalog

CVE-2022-37451

exim4: CVE-2022-37451

Severity: Medium
Published: Aug 6, 2022, 6:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.29% · Oct 25, 2026

Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	exim4	sid	`4.100.1-4`	fixed
Debian	exim4	forky	`4.100.1-4`	fixed
Debian	exim4	trixie	`4.98.2-1+deb13u4`	fixed
Debian	exim4	trixie-security	`4.98.2-1+deb13u5`	fixed
Debian	exim4	bookworm	`4.96-15+deb12u10`	fixed
Debian	exim4	bookworm-security	`4.96-15+deb12u10`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	exim4	source	sid	`4.95-4`	not yet assigned	Not reported	Not reported
Debian	exim4	source	forky	`4.95-4`	not yet assigned	Not reported	Not reported
Debian	exim4	source	trixie	`4.95-4`	not yet assigned	Not reported	Not reported
Debian	exim4	source	bookworm	`4.95-4`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[exim4]Unknown
Details (6)
- 4.96-15+deb12u10 · all · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[exim4-base]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · amd64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · amd64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[exim4-config]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · all · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · all · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[exim4-daemon-heavy]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · amd64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · amd64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[exim4-daemon-light]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · amd64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · amd64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[exim4-dev]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · amd64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · amd64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
[eximon4]Unknown
Source package: [exim4]
Details (6)
- 4.96-15+deb12u10 · amd64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.98.2-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · amd64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm
- 4.96-15+deb12u10 · arm64 · bookworm-security
  Fixed · Fixed: 4.95-4
  dsa · exim4 · debian · bookworm

Observed: Oct 23, 2026, 6:29:03 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]