SUSE alert SUSE-SU-2026:20904-1 (cosign)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2026:20904-1: moderate: Security update for cosign
Date:
             
 
Wed, 01 Apr 2026 12:40:58 -0000
Message-ID:
             
 
<177504725846.568.16126120326448110697@634a8d224e68>


# Security update for cosign

Announcement ID: SUSE-SU-2026:20904-1  
Release Date: 2026-03-18T11:29:30Z  
Rating: moderate  
References:

  * bsc#1250620
  * bsc#1253913
  * bsc#1256496
  * bsc#1256562
  * bsc#1257080
  * bsc#1257085
  * bsc#1257139
  * bsc#1258542
  * bsc#1258612

  
Cross-References:

  * CVE-2025-11065
  * CVE-2025-58181
  * CVE-2026-22703
  * CVE-2026-22772
  * CVE-2026-23991
  * CVE-2026-23992
  * CVE-2026-24122
  * CVE-2026-24137
  * CVE-2026-26958

  
CVSS scores:

  * CVE-2025-11065 ( SUSE ):  5.7
    CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-11065 ( SUSE ):  4.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
  * CVE-2025-11065 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
  * CVE-2025-58181 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-58181 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-58181 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-22703 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-22703 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-22703 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-22772 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
  * CVE-2026-22772 ( SUSE ):  5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
  * CVE-2026-22772 ( NVD ):  5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
  * CVE-2026-22772 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-23991 ( SUSE ):  6.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23991 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-23991 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23991 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23992 ( SUSE ):  6.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23992 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-23992 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-23992 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-24122 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-24122 ( SUSE ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2026-24122 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2026-24137 ( SUSE ):  6.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-24137 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-24137 ( NVD ):  5.8 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
  * CVE-2026-26958 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-26958 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
  * CVE-2026-26958 ( NVD ):  1.7

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

  
Affected Products:

  * SUSE Linux Enterprise Server - BCI 16.0

  
  
An update that solves nine vulnerabilities can now be installed.

## Description:

This update for cosign fixes the following issues:

Update to version 3.0.5:

  * CVE-2026-24122: Fixed improper validation of certificates that outlive
    expired CA certificates (bsc#1258542)
  * CVE-2026-26958: Fixed filippo.io/edwards25519: failure to initialize
    receiver in MultiScalarMult can produce invalid results and lead to
    undefined behavior (bsc#1258612)
  * CVE-2026-24137: Fixed github.com/sigstore/sigstore/pkg/tuf: legacy TUF
    client allows for arbitrary file writes with target cache path traversal
    (bsc#1257139)
  * CVE-2026-22772: Fixed github.com/sigstore/fulcio: bypass MetaIssuer URL
    validation bypass can trigger SSRF to arbitrary internal services
    (bsc#1256562)
  * CVE-2026-23991: Fixed github.com/theupdateframework/go-tuf/v2: denial of
    service due to invalid TUF metadata JSON returned by TUF repository
    (bsc#1257080)
  * CVE-2026-23992: Fixed github.com/theupdateframework/go-tuf/v2: unauthorized
    modification to TUF metadata files due to a compromised or misconfigured TUF
    repository (bsc#1257085)
  * CVE-2025-11065: Fixed github.com/go-viper/mapstructure/v2: sensitive
    Information leak in logs (bsc#1250620)
  * CVE-2026-22703: Fixed that cosign verification accepts any valid Rekor entry
    under certain conditions (bsc#1256496)
  * CVE-2025-58181: Fixed golang.org/x/crypto/ssh: invalidated number of
    mechanisms can cause unbounded memory consumption (bsc#1253913)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server - BCI 16.0  
    zypper in -t patch SUSE-SLES-16.0-404=1

## Package List:

  * SUSE Linux Enterprise Server - BCI 16.0 (aarch64 ppc64le s390x x86_64)
    * cosign-debuginfo-3.0.5-160000.1.1
    * cosign-3.0.5-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-11065.html
  * https://www.suse.com/security/cve/CVE-2025-58181.html
  * https://www.suse.com/security/cve/CVE-2026-22703.html
  * https://www.suse.com/security/cve/CVE-2026-22772.html
  * https://www.suse.com/security/cve/CVE-2026-23991.html
  * https://www.suse.com/security/cve/CVE-2026-23992.html
  * https://www.suse.com/security/cve/CVE-2026-24122.html
  * https://www.suse.com/security/cve/CVE-2026-24137.html
  * https://www.suse.com/security/cve/CVE-2026-26958.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1250620
  * https://bugzilla.suse.com/show_bug.cgi?id=1253913
  * https://bugzilla.suse.com/show_bug.cgi?id=1256496
  * https://bugzilla.suse.com/show_bug.cgi?id=1256562
  * https://bugzilla.suse.com/show_bug.cgi?id=1257080
  * https://bugzilla.suse.com/show_bug.cgi?id=1257085
  * https://bugzilla.suse.com/show_bug.cgi?id=1257139
  * https://bugzilla.suse.com/show_bug.cgi?id=1258542
  * https://bugzilla.suse.com/show_bug.cgi?id=1258612



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