CVE catalog

CVE-2022-38153

wolfssl: CVE-2022-38153

Severity: Medium
Source: [NVD] · [CVE record]
EPSS: 2.48% · Oct 25, 2026

An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 is exploitable. Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake. If an attacker injects a large ticket (more than 256 bytes) into a NewSessionTicket message in a TLS 1.2 handshake, and the client has a non-empty session cache, the session cache frees a pointer that points to unallocated memory, causing the client to crash with a "free(): invalid pointer" message. NOTE: It is likely that this is also exploitable during TLS 1.3 handshakes between a client and a malicious server. With TLS 1.3, it is not possible to exploit this as a man-in-the-middle.

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	wolfssl	sid	`5.9.2-1.2`	fixed
Debian	wolfssl	trixie	`5.7.2-0.1+deb13u2`	fixed
Debian	wolfssl	bookworm	`5.5.4-2+deb12u2`	fixed
Debian	wolfssl	bookworm-security	`5.5.4-2+deb12u3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wolfssl	source	sid	`5.5.3-1`	not yet assigned	Not reported	[1021021]
Debian	wolfssl	source	trixie	`5.5.3-1`	not yet assigned	Not reported	[1021021]
Debian	wolfssl	source	bookworm	`5.5.3-1`	not yet assigned	Not reported	[1021021]

[Debian bug #1021021]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 5.5.3-1
  dsa · wolfssl · debian · bookworm

Observed: Oct 23, 2026, 6:29:04 PM UTC

References

[https://security-tracker.debian.org/tracker/CVE-2022-38153]

[Debian Security Tracker] · [FIRST EPSS]