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SUSE Linux Enterprise 11 SP4 Kernel Important Security Update 2026-3809

SUSE Linux Enterprise 11 SP4 Kernel Important Security Update 2026-3809

Linuxsecurity •LinuxSecurity Advisories • August 26, 2026

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## 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).

## 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-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

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

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