openSUSE-SU-2026:21669-1: important: Security update for wicked

openSUSE security update: security update for wicked
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Announcement ID: openSUSE-SU-2026:21669-1
Rating: important
References:

  * bsc#1274627



Cross-References:

  * CVE-2026-71401
  * CVE-2026-71402



CVSS scores:

  * CVE-2026-71401 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-71402 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Products:

         openSUSE Leap 16.0

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An update that solves 2 vulnerabilities and has one bug fix can now be installed.

Description:

This update for wicked fixes the following issues:

Changes in wicked:

- Fix two OOB reads in ni_capture_inspect_udp_header and improve:
  - Reject packets with ip_len < ihl to avoid a size_t underflow of the
    UDP length, which the checksum truncates to uint16_t (bsc#1274627,
    CVE-2026-71401).
  - Set payload_len to the remaining payload, not ip_len, which over-read
    the DHCP option walker by ihl + 8 bytes past the buffer (bsc#1274627,
    CVE-2026-71402).
  - Avoid checksumming packets that fail the length/protocol checks and
    tidy up the debug messages (bsc#1274627).
  - Fix underflow check in ni_dhcp4_option_next to handle option code
    and length separately as the END and PAD options don't have length
    (bsc#1274627).

  Thanks to Daniel Birtwhistle for discovering and reporting the issues.


Patch instructions:

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

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-packagehub-540=1

Package List:

- openSUSE Leap 16.0:

  wicked-0.6.80-bp160.2.1
  wicked-nbft-0.6.80-bp160.2.1
  wicked-service-0.6.80-bp160.2.1

References:

  * https://www.suse.com/security/cve/CVE-2026-71401.html
  * https://www.suse.com/security/cve/CVE-2026-71402.html