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SUSE alert SUSE-SU-2026:3809-1 (kernel)



From:
              SLE-SECURITY-UPDATES <null@suse.de>


To:
              sle-security-updates@lists.suse.com


Subject:
              SUSE-SU-2026:3809-1: important: Security update for the Linux Kernel


Date:
              Wed, 26 Aug 2026 16:52:21 -0000


Message-ID:
              <178776314175.9443.16184782964597490520@6f3a8d4f1c47>


# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:3809-1  
Release Date: 2026-08-26T10:44:29Z  
Rating: important  
References:

  * bsc#1255616
  * bsc#1258340
  * bsc#1269289
  * bsc#1269773
  * bsc#1269986
  * bsc#1269988
  * bsc#1269993
  * bsc#1269997
  * bsc#1270059
  * bsc#1272268
  * bsc#1272855
  * bsc#1273742
  * bsc#1274072

  
Cross-References:

  * CVE-2023-53995
  * CVE-2026-23204
  * CVE-2026-52986
  * CVE-2026-53131
  * CVE-2026-53196
  * CVE-2026-53224
  * CVE-2026-53246
  * CVE-2026-53256
  * CVE-2026-53359
  * CVE-2026-63806
  * CVE-2026-63922
  * CVE-2026-63924
  * CVE-2026-64114
  * CVE-2026-64564

  
CVSS scores:

  * CVE-2023-53995 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2023-53995 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23204 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23204 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23204 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-23204 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-52986 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-52986 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53131 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53131 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-53131 ( NVD ):  9.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
  * CVE-2026-53196 ( SUSE ):  7.0
    CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53196 ( SUSE ):  6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53196 ( NVD ):  6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53196 ( NVD ):  6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53224 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53224 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53224 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-53246 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53246 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-53246 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53256 ( SUSE ):  7.7
    CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-53256 ( SUSE ):  7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53256 ( NVD ):  8.0 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-53359 ( SUSE ):  9.3
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-53359 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-53359 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-63806 ( SUSE ):  5.9
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-63806 ( SUSE ):  7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  * CVE-2026-63806 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
  * CVE-2026-63922 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-63922 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-63924 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-63924 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64114 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-64114 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64114 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64564 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-64564 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-64564 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 11 SP4
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE

  
  
An update that solves 14 vulnerabilities can now be installed.

## Description:

The SUSE Linux Enterprise 11 SP4 kernel was updated to fix various security
issues:

The following security issues were fixed:

  * CVE-2023-53995: net: ipv4: fix one memleak in __inet_del_ifa()
    (bsc#1255616).
  * CVE-2026-23204: net: add skb_header_pointer_careful() helper (bsc#1258340).
  * CVE-2026-52986: netfilter: nf_conntrack_sip: don't use simple_strtoul
    (bsc#1269289).
  * CVE-2026-53131: netfilter: require Ethernet MAC header before using
    eth_hdr() (bsc#1269773).
  * CVE-2026-53196: USB: serial: io_ti: fix heap overflow in get_manuf_info()
    (bsc#1269986).
  * CVE-2026-53224: sctp: validate embedded INIT chunk and address list lengths
    in cookie (bsc#1269997).
  * CVE-2026-53246: sctp: validate cached peer INIT chunk length in COOKIE_ECHO
    processing (bsc#1269988).
  * CVE-2026-53256: Bluetooth: RFCOMM: hold listener socket in
    rfcomm_connect_ind() (bsc#1269993).
  * CVE-2026-63806: KVM: Replace guest-triggerable BUG_ON() in ioeventfd
    datamatch with get_unaligned() (bsc#1272268).
  * CVE-2026-63922: ipv6: exthdrs: recompute network header pointer once
    (bsc#1272855).
  * CVE-2026-63924: ipv6: exthdrs: recompute network header pointer once
    (bsc#1272855).
  * CVE-2026-64114: ipv4: raw: reject IP_HDRINCL packets with ihl < 5
    (bsc#1273742).
  * CVE-2026-64564: sctp: don't free the ASCONF's own transport in DEL-IP
    processing (bsc#1274072).

The following non security issues were fixed:

  * scripts/cve_tools/kpm-bot: quote branch pattern properly.
  * sctp: validate embedded address parameter length (git-fixes).

## Special Instructions and Notes:

  * Please reboot the system after installing this update.

## 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 11 SP4 LTSS EXTREME CORE  
    zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2026-3809=1

  * SUSE Linux Enterprise Server 11 SP4  
    zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2026-3809=1

## Package List:

  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (x86_64)
    * kernel-default-debugsource-3.0.101-108.216.1
    * kernel-ec2-debugsource-3.0.101-108.216.1
    * kernel-xen-debugsource-3.0.101-108.216.1
    * kernel-ec2-devel-debuginfo-3.0.101-108.216.1
    * kernel-trace-base-3.0.101-108.216.1
    * kernel-trace-debuginfo-3.0.101-108.216.1
    * kernel-xen-base-3.0.101-108.216.1
    * kernel-ec2-base-3.0.101-108.216.1
    * kernel-xen-devel-debuginfo-3.0.101-108.216.1
    * kernel-default-debuginfo-3.0.101-108.216.1
    * kernel-trace-devel-3.0.101-108.216.1
    * kernel-default-base-3.0.101-108.216.1
    * kernel-xen-devel-3.0.101-108.216.1
    * kernel-trace-debugsource-3.0.101-108.216.1
    * kernel-ec2-devel-3.0.101-108.216.1
    * kernel-default-devel-3.0.101-108.216.1
    * kernel-default-devel-debuginfo-3.0.101-108.216.1
    * kernel-xen-debuginfo-3.0.101-108.216.1
    * kernel-source-3.0.101-108.216.1
    * kernel-trace-devel-debuginfo-3.0.101-108.216.1
    * kernel-ec2-debuginfo-3.0.101-108.216.1
    * kernel-syms-3.0.101-108.216.1
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (nosrc x86_64)
    * kernel-ec2-3.0.101-108.216.1
    * kernel-trace-3.0.101-108.216.1
    * kernel-default-3.0.101-108.216.1
    * kernel-xen-3.0.101-108.216.1
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (noarch nosrc)
    * kernel-docs-3.0.101-108.216.1
  * SUSE Linux Enterprise Server 11 SP4 (x86_64)
    * kernel-default-debugsource-3.0.101-108.216.1
    * kernel-ec2-debugsource-3.0.101-108.216.1
    * kernel-xen-debugsource-3.0.101-108.216.1
    * kernel-ec2-devel-debuginfo-3.0.101-108.216.1
    * kernel-trace-base-3.0.101-108.216.1
    * kernel-trace-debuginfo-3.0.101-108.216.1
    * kernel-xen-base-3.0.101-108.216.1
    * kernel-ec2-base-3.0.101-108.216.1
    * kernel-xen-devel-debuginfo-3.0.101-108.216.1
    * kernel-default-debuginfo-3.0.101-108.216.1
    * kernel-trace-devel-3.0.101-108.216.1
    * kernel-default-base-3.0.101-108.216.1
    * kernel-xen-devel-3.0.101-108.216.1
    * kernel-trace-debugsource-3.0.101-108.216.1
    * kernel-ec2-devel-3.0.101-108.216.1
    * kernel-default-devel-3.0.101-108.216.1
    * kernel-default-devel-debuginfo-3.0.101-108.216.1
    * kernel-xen-debuginfo-3.0.101-108.216.1
    * kernel-source-3.0.101-108.216.1
    * kernel-trace-devel-debuginfo-3.0.101-108.216.1
    * kernel-ec2-debuginfo-3.0.101-108.216.1
    * kernel-syms-3.0.101-108.216.1
  * SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64)
    * kernel-ec2-3.0.101-108.216.1
    * kernel-trace-3.0.101-108.216.1
    * kernel-default-3.0.101-108.216.1
    * kernel-xen-3.0.101-108.216.1
  * SUSE Linux Enterprise Server 11 SP4 (noarch nosrc)
    * kernel-docs-3.0.101-108.216.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-53995.html
  * https://www.suse.com/security/cve/CVE-2026-23204.html
  * https://www.suse.com/security/cve/CVE-2026-52986.html
  * https://www.suse.com/security/cve/CVE-2026-53131.html
  * https://www.suse.com/security/cve/CVE-2026-53196.html
  * https://www.suse.com/security/cve/CVE-2026-53224.html
  * https://www.suse.com/security/cve/CVE-2026-53246.html
  * https://www.suse.com/security/cve/CVE-2026-53256.html
  * https://www.suse.com/security/cve/CVE-2026-53359.html
  * https://www.suse.com/security/cve/CVE-2026-63806.html
  * https://www.suse.com/security/cve/CVE-2026-63922.html
  * https://www.suse.com/security/cve/CVE-2026-63924.html
  * https://www.suse.com/security/cve/CVE-2026-64114.html
  * https://www.suse.com/security/cve/CVE-2026-64564.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1255616
  * https://bugzilla.suse.com/show_bug.cgi?id=1258340
  * https://bugzilla.suse.com/show_bug.cgi?id=1269289
  * https://bugzilla.suse.com/show_bug.cgi?id=1269773
  * https://bugzilla.suse.com/show_bug.cgi?id=1269986
  * https://bugzilla.suse.com/show_bug.cgi?id=1269988
  * https://bugzilla.suse.com/show_bug.cgi?id=1269993
  * https://bugzilla.suse.com/show_bug.cgi?id=1269997
  * https://bugzilla.suse.com/show_bug.cgi?id=1270059
  * https://bugzilla.suse.com/show_bug.cgi?id=1272268
  * https://bugzilla.suse.com/show_bug.cgi?id=1272855
  * https://bugzilla.suse.com/show_bug.cgi?id=1273742
  * https://bugzilla.suse.com/show_bug.cgi?id=1274072





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