SUSE-SU-2026:24137-1: important: Security update for busybox

Tue Oct 13 20:30:55 UTC 2026

# Security update for busybox

Announcement ID: SUSE-SU-2026:24137-1  
Release Date: 2026-10-10T16:38:09Z  
Rating: important  
References:

  * bsc#1282550
  * bsc#1282551
  * bsc#1282552
  * bsc#1282568
  * bsc#1282575
  * bsc#1282576
  * bsc#1282653

Cross-References:

  * CVE-2026-88830
  * CVE-2026-88831
  * CVE-2026-88832
  * CVE-2026-88835
  * CVE-2026-88837
  * CVE-2026-88839
  * CVE-2026-88841

CVSS scores:

  * CVE-2026-88830 ( SUSE ):  7.7
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-88830 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-88830 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-88831 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-88831 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-88831 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-88832 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-88832 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-88832 ( NVD ):  7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-88835 ( SUSE ):  6.9
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-88835 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
  * CVE-2026-88835 ( NVD ):  6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
  * CVE-2026-88837 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-88837 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
  * CVE-2026-88837 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
  * CVE-2026-88839 ( SUSE ):  8.4
    CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-88839 ( SUSE ):  6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-88839 ( NVD ):  6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-88841 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-88841 ( SUSE ):  4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

Affected Products:

  * SUSE Linux Micro 6.0

An update that solves seven vulnerabilities can now be installed.

## Description:

This update for busybox fixes the following issues:

  * CVE-2026-88830: unit confusion in TLS Montgomery reduction buffer allocation
    causes a pre-authentication heap buffer overflow when processing a crafted
    `ClientKeyExchange` message (bsc#1282575).
  * CVE-2026-88831: httpd silently fails open when IP deny rules contain invalid
    CIDR prefix lengths (bsc#1282550).
  * CVE-2026-88832: romfs volume ID parsing uses unbounded `strlen` on attacker-
    controlled metadata and allows for a heap buffer overflow when crafted
    filesystem images are processed (bsc#1282576).
  * CVE-2026-88835: dpkg read_package_field() steps past NUL terminator, causing
    out-of-bounds read on malformed .deb packages (bsc#1282551).
  * CVE-2026-88837: httpd misidentifies yescrypt password hashes as plaintext
    (bsc#1282552).
  * CVE-2026-88839: passwd/group parser writes heap pointers out of bounds due
    to stale tokenize() endpoint (bsc#1282568).
  * CVE-2026-88841: OOB read and silent memory corruption of the status file due
    to `write_status_file()` failing to reset the `field_start` cursor between
    package stanzas (bsc#1282653).

## 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 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-926

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * busybox-1.36.1-159998.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-88830.html
  * https://www.suse.com/security/cve/CVE-2026-88831.html
  * https://www.suse.com/security/cve/CVE-2026-88832.html
  * https://www.suse.com/security/cve/CVE-2026-88835.html
  * https://www.suse.com/security/cve/CVE-2026-88837.html
  * https://www.suse.com/security/cve/CVE-2026-88839.html
  * https://www.suse.com/security/cve/CVE-2026-88841.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1282550
  * https://bugzilla.suse.com/show_bug.cgi?id=1282551
  * https://bugzilla.suse.com/show_bug.cgi?id=1282552
  * https://bugzilla.suse.com/show_bug.cgi?id=1282568
  * https://bugzilla.suse.com/show_bug.cgi?id=1282575
  * https://bugzilla.suse.com/show_bug.cgi?id=1282576
  * https://bugzilla.suse.com/show_bug.cgi?id=1282653

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