SUSE-SU-2026:21836-1: important: Security update for cups

SLE-SECURITY-UPDATES null at suse.de
Fri May 29 20:37:00 UTC 2026 

# Security update for cups

Announcement ID: SUSE-SU-2026:21836-1  
Release Date: 2026-05-26T12:19:57Z  
Rating: important  
References:

  * bsc#1261568
  * bsc#1261569
  * bsc#1261570
  * bsc#1261571
  * bsc#1261572
  * bsc#1261742
  * bsc#1261743
  * bsc#1263116

  
Cross-References:

  * CVE-2026-27447
  * CVE-2026-34978
  * CVE-2026-34979
  * CVE-2026-34980
  * CVE-2026-34990
  * CVE-2026-39314
  * CVE-2026-39316
  * CVE-2026-41079

  
CVSS scores:

  * CVE-2026-27447 ( SUSE ):  4.8 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
  * CVE-2026-27447 ( NVD ):  6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
  * CVE-2026-27447 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N
  * CVE-2026-34978 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
  * CVE-2026-34978 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
  * CVE-2026-34979 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-34979 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-34980 ( SUSE ):  6.4 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
  * CVE-2026-34980 ( NVD ):  6.1
    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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
  * CVE-2026-34980 ( NVD ):  7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-34990 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-34990 ( NVD ):  5.0
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:L/E:X/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
  * CVE-2026-34990 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-39314 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39314 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39314 ( NVD ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-39314 ( NVD ):  6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39316 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39316 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39316 ( NVD ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-39316 ( NVD ):  6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-41079 ( SUSE ):  5.1
    CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-41079 ( SUSE ):  3.5 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-41079 ( NVD ):  4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-41079 ( NVD ):  5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

  
Affected Products:

  * SUSE Linux Micro 6.2

  
  
An update that solves eight vulnerabilities can now be installed.

## Description:

This update for cups fixes the following issues

  * CVE-2026-27447: Authorization bypass via case-insensitive group-member
    lookup (bsc#1261572).
  * CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file
    write outside CacheDir/rss (bsc#1261571).
  * CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).
  * CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests
    reach `lp` code execution over the network (bsc#1261569).
  * CVE-2026-34990: Local print admin token disclosure using temporary printers
    (bsc#1261568).
  * CVE-2026-39314: negative `job-password-supported` attribute can lead to a
    denial of service (bsc#1261743).
  * CVE-2026-39316: dangling subscription pointer can lead to a denial of
    service (bsc#1261742).
  * CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds
    read and sensitive memory disclosure (bsc#1263116).

Changes for cups:

  * Version upgrade to 2.4.19.

  * Version upgrade to 2.4.18.

  * Version upgrade to 2.4.17:

  * The scheduler followed symbolic links when cleaning out its temporary
    directory (Issue #1448)

  * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape more characters.
  * Updated man page `cancel` (Issue #984)
  * Updated `cupsRasterReadHeader` to validate more of the page header values
    (Issue #1501)
  * Fixed an issue with the class/printer CGI name checking.
  * Fixed infinite loop in `http_write()` on busy print servers (Issue #827)
  * Fixed potential TLS blocking issues (Issue #1128)
  * Fixed a job history bug in the scheduler (Issue #1440)
  * Fixed notifier logging bug that would result in nul bytes getting into the
    log (Issue #1450)
  * Fixed possible use-after-free in `cupsdReadClient()` (Issue #1454)
  * Fixed a document format bug in the IPP backend (Issue #1457)
  * Fixed DRAIN_OUTPUT race condition (Issue #1461)
  * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions were mixed.
  * Fixed the mapping of supply type keywords to SNMP names.
  * Fixed a bug in the IPP backend when SNMP was disabled.
  * Fixed a crash bug in the rastertoepson filter.
  * Fixed a bug in cgiCheckVariables.
  * Fixed handling read/write errors with OpenSSL (Issue #1506)
  * Fixed handling rehandshake error in `_httpTLSRead` (Issue #1508)
  * Fixed a debug printf bug on Windows (Issue #1529)
  * Fixed a recursion issue with encoding of nested collections (Issue #1539)
  * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`, and `MaxRequestSize`
    directives in "cupsd.conf" (Issue #1540)
  * Fixed a parsing bug in `ipptool` (Issue #1542)
  * Fixed blank line detection in the `rastertolabel` filter (Issue #1545)
  * Fixed `httpPeek` edge case on compressed streams

## 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 Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-802=1

## Package List:

  * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64)
    * libcups2-debuginfo-2.4.19-160000.1.1
    * cups-config-2.4.19-160000.1.1
    * libcups2-2.4.19-160000.1.1
    * cups-debuginfo-2.4.19-160000.1.1
    * cups-debugsource-2.4.19-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-27447.html
  * https://www.suse.com/security/cve/CVE-2026-34978.html
  * https://www.suse.com/security/cve/CVE-2026-34979.html
  * https://www.suse.com/security/cve/CVE-2026-34980.html
  * https://www.suse.com/security/cve/CVE-2026-34990.html
  * https://www.suse.com/security/cve/CVE-2026-39314.html
  * https://www.suse.com/security/cve/CVE-2026-39316.html
  * https://www.suse.com/security/cve/CVE-2026-41079.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261568
  * https://bugzilla.suse.com/show_bug.cgi?id=1261569
  * https://bugzilla.suse.com/show_bug.cgi?id=1261570
  * https://bugzilla.suse.com/show_bug.cgi?id=1261571
  * https://bugzilla.suse.com/show_bug.cgi?id=1261572
  * https://bugzilla.suse.com/show_bug.cgi?id=1261742
  * https://bugzilla.suse.com/show_bug.cgi?id=1261743
  * https://bugzilla.suse.com/show_bug.cgi?id=1263116

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