DEBIAN-CVE-2026-75805

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Source
https://security-tracker.debian.org/tracker/CVE-2026-75805
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75805.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-75805
Upstream
Published
2026-09-29T16:17:11Z
Modified
2026-09-30T08:00:11Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response. Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial of Service for the affected client application. CWE: CWE-476: NULL-pointer dereference Description: A CMP client revoking a certificate has to tell the server which certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the certificate itself or its issuer name and serial number. This is 'openssl cmp -cmd rr -csr ' on the command line, or OSSL_CMP_exec_RR_ses() with the certificate supplied via OSSL_CMP_CTX_set1_p10CSR() through the API. A CSR does not contain the issuer name and serial number of the certificate, so the client does not send them. A server may optionally name the certificate it revoked in its response, and the client then compares that name against what it sent. Having sent neither an issuer name nor a serial number, it has nothing to compare against, and a server returning a specially crafted name causes the client to read from a NULL pointer and crash. The revocation response is checked for valid message protection before the affected code is reached, so an attacker must be a malicious or compromised CMP server, or a man-in-the-middle in possession of the secret used for message protection. Clients that identify the certificate to be revoked by a certificate or by issuer and serial number rather than by a PKCS#10 CSR are not affected. FIPS impact: no No FIPS modules are affected by this issue, as the CMP protocol implementation is outside the OpenSSL FIPS module boundary.

References

Affected packages

Debian:12 / openssl

Package

Name
openssl
Purl
pkg:deb/debian/openssl?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.0.9-1
3.0.10-1~deb12u1
3.0.10-1
3.0.11-1~deb12u1
3.0.11-1~deb12u2
3.0.11-1
3.0.12-1
3.0.12-2
3.0.13-1~deb12u1
3.0.13-1~deb12u2
3.0.14-1~deb12u1
3.0.14-1~deb12u2
3.0.15-1~deb12u1
3.0.16-1~deb12u1
3.0.17-1~deb12u1
3.0.17-1~deb12u2
3.0.17-1~deb12u3
3.0.18-1~deb12u1
3.0.18-1~deb12u2
3.0.19-1~deb12u1
3.0.19-1~deb12u2
3.0.20-1~deb12u1
3.0.20-1~deb12u2
3.0.22-1~deb12u1
3.1.0-1
3.1.1-1
3.1.2-1
3.1.3-1
3.1.4-1
3.1.4-2
3.1.5-1
3.1.5-1.1
3.1.5-1.1+hurd.1
3.2.0-1
3.2.0-2
3.2.1-1
3.2.1-1.1~exp1
3.2.1-2
3.2.1-3
3.2.2-1
3.3.0~beta1-1
3.3.0-1
3.3.1-1
3.3.1-2
3.3.1-5
3.3.1-6
3.3.1-7
3.3.2-1
3.3.2-2
3.4.0~~beta1-1
3.4.0~~beta1-2
3.4.0-1
3.4.0-2
3.4.1-1
3.5.0~~alpha1-1
3.5.0~~beta1-1
3.5.0-1
3.5.0-2
3.5.0-3
3.5.1-1
3.5.2-1
3.5.3-1
3.5.4-1~deb13u1
3.5.4-1~deb13u2
3.5.4-1
3.5.5-1~deb13u1
3.5.5-1~deb13u2
3.5.5-1
3.5.6-1~deb13u1
3.5.6-1~deb13u2
3.5.7-1~deb13u1
3.5.7-1~deb13u2
3.5.7-1~deb13u3
3.6.0~~alpha1-1
3.6.0~~beta1-1
3.6.0-1
3.6.0-2
3.6.1-1
3.6.1-2
3.6.1-3
3.6.2-1
3.6.3-1
3.6.4-1
3.6.5-1
4.*
4.0.0~alpha1-1
4.0.0~beta1-1
4.0.0-1
4.0.1-1
4.0.2-1
4.0.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75805.json"

Debian:13 / openssl

Package

Name
openssl
Purl
pkg:deb/debian/openssl?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.5.7-1~deb13u3

Affected versions

3.*
3.5.1-1
3.5.1-1+deb13u1
3.5.2-1
3.5.3-1
3.5.4-1~deb13u1
3.5.4-1~deb13u2
3.5.4-1
3.5.5-1~deb13u1
3.5.5-1~deb13u2
3.5.5-1
3.5.6-1~deb13u1
3.5.6-1~deb13u2
3.5.7-1~deb13u1
3.5.7-1~deb13u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75805.json"

Debian:14 / openssl

Package

Name
openssl
Purl
pkg:deb/debian/openssl?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.5.1-1
3.5.2-1
3.5.3-1
3.5.4-1~deb13u1
3.5.4-1~deb13u2
3.5.4-1
3.5.5-1~deb13u1
3.5.5-1~deb13u2
3.5.5-1
3.5.6-1~deb13u1
3.5.6-1~deb13u2
3.5.7-1~deb13u1
3.5.7-1~deb13u2
3.5.7-1~deb13u3
3.6.0~~alpha1-1
3.6.0~~beta1-1
3.6.0-1
3.6.0-2
3.6.1-1
3.6.1-2
3.6.1-3
3.6.2-1
3.6.3-1
3.6.4-1
3.6.5-1
4.*
4.0.0~alpha1-1
4.0.0~beta1-1
4.0.0-1
4.0.1-1
4.0.2-1
4.0.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75805.json"