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SUSE Linux Micro 6.0 Kernel Key Buffer Overflow Security Flaw 2026-20378-1

suse
Calendar Grey February 17, 2026
Dist Suse Esm H88
Critical update addresses multiple security issues in SUSE Linux Kernel, ensuring system integrity and safety. Patching recommended.
An update that solves seven vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 6.4.0-29.1 fixes various security issues The following security issues were fixed: * CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787). * CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1251203). * CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment() (bsc#1248400). * CVE-2025-38588: ipv6: prevent infinite loop in rt6_nlmsg_size() (bsc#1249241). * CVE-2025-38608: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls (bsc#1248670). * CVE-2025-39682: tls: fix handling of zero-length records on the rx_list (bsc#1250192). * CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437). ## Patch Instructions:

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE DoS important kernel

References

* bsc#1248400

* bsc#1248670

* bsc#1249241

* bsc#1250192

* bsc#1251203

* bsc#1251787

* bsc#1253437

Cross-

* CVE-2023-53676

* CVE-2025-38476

* CVE-2025-38572

* CVE-2025-38588

* CVE-2025-38608

* CVE-2025-39682

* CVE-2025-40204

CVSS scores:

* CVE-2023-53676 ( 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-2023-53676 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-53676 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38476 ( 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-2025-38476 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38476 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38572 ( SUSE ): 9.2

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20378-1
Release Date: 2026-01-19T15:31:55Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE DoS important kernel

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