DEBIAN-CVE-2026-77696

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Source
https://security-tracker.debian.org/tracker/CVE-2026-77696
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77696.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-77696
Upstream
Published
2026-09-29T16:17:11Z
Modified
2026-09-30T08:00:09Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidden Number Problem attack, lead to recovery of the private key. CWE: CWE-208: Observable Timing Discrepancy Description: SM2 signature generation computes the signature value using variable-time BIGNUM operations on the secret nonce and the private key, so the time taken to produce an SM2 signature depends on these secret values, forming a timing side-channel. Applications performing SM2 signature generation are affected on all platforms. FIPS Impact: no SM2 is not a FIPS algorithm.

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/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77696.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/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77696.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/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77696.json"