DEBIAN-CVE-2026-31790

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Source
https://security-tracker.debian.org/tracker/CVE-2026-31790
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31790.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-31790
Upstream
Published
2026-04-07T22:16:21Z
Modified
2026-09-14T17:03:06Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker in place of the KEM ciphertext. As a workaround calling EVP_PKEY_public_check() or EVP_PKEY_public_check_quick() before EVP_PKEY_encapsulate() will mitigate the issue. The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.1 and 3.0 are affected by this issue.

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
Fixed
3.0.19-1~deb12u2

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31790.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
3.5.5-1~deb13u2

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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31790.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
Fixed
3.6.2-1

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
3.6.0~~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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31790.json"