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openSUSE Leap 15.6: Kernel Important Security Fix 2025:4521-1

opensuse
Calendar Grey December 24, 2025
Dist Opensuse Esm H88
An important security update for openSUSE kernel addresses 65 issues with nine critical fixes to enhance system security.
An update that solves 65 vulnerabilities and has nine security fixes can now be installed.

Description

The SUSE Linux Enterprise 15 SP6 RT kernel was updated to receive various

security bugfixes.

The following security bugs were fixed:

* CVE-2022-50253: bpf: make sure skb->len != 0 when redirecting to a tunneling

device (bsc#1249912).

* CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in

lio_target_nacl_info_show() (bsc#1251786).

* CVE-2025-21710: tcp: correct handling of extreme memory squeeze

(bsc#1237888).

* CVE-2025-37916: pds_core: remove write-after-free of client_id

(bsc#1243474).

* CVE-2025-38359: s390/mm: Fix in_atomic() handling in

do_secure_storage_access() (bsc#1247076).

* CVE-2025-38361: drm/amd/display: Check dce_hwseq before dereferencing it

(bsc#1247079).

* CVE-2025-39788: scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE

(bsc#1249547).

* CVE-2025-39805: net: macb: fix unregister_netdev call order in macb_remove()

(bsc#1249982).

* CVE-2025-39819: fs/smb: Fix inconsistent refcnt update (bsc#1250176).

...

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Topics%20covered

Topics Covered

security advisory buffer overflow important kernel critical security fix OpenSUSE

Patch

## 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:

* openSUSE Leap 15.6

zypper in -t patch openSUSE-SLE-15.6-2025-4521=1

* SUSE Linux Enterprise Live Patching 15-SP6

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2025-4521=1

* SUSE Real Time Module 15-SP6

zypper in -t patch SUSE-SLE-Module-RT-15-SP6-2025-4521=1

Package List

* openSUSE Leap 15.6 (x86_64)

* reiserfs-kmp-rt-debuginfo-6.4.0-150600.10.61.1

* reiserfs-kmp-rt-6.4.0-150600.10.61.1

* kernel-rt_debug-debugsource-6.4.0-150600.10.61.1

* gfs2-kmp-rt-debuginfo-6.4.0-150600.10.61.1

* kernel-rt-debuginfo-6.4.0-150600.10.61.1

* kernel-rt-optional-6.4.0-150600.10.61.1

* kernel-rt-vdso-6.4.0-150600.10.61.1

* kernel-rt-devel-debuginfo-6.4.0-150600.10.61.1

* cluster-md-kmp-rt-6.4.0-150600.10.61.1

* kselftests-kmp-rt-debuginfo-6.4.0-150600.10.61.1

* kernel-rt_debug-debuginfo-6.4.0-150600.10.61.1

* kselftests-kmp-rt-6.4.0-150600.10.61.1

* kernel-rt-extra-debuginfo-6.4.0-150600.10.61.1

* kernel-rt_debug-devel-debuginfo-6.4.0-150600.10.61.1

* cluster-md-kmp-rt-debuginfo-6.4.0-150600.10.61.1

* kernel-rt-livepatch-devel-6.4.0-150600.10.61.1

* kernel-rt_debug-vdso-6.4.0-150600.10.61.1

* kernel-rt_debug-vdso-debuginfo-6.4.0-150600.10.61.1

* dlm-kmp-rt-6.4.0-150600.10.61.1

* kernel-rt-debugsource-6.4.0-150600.10.61.1

* kernel-rt-devel-6.4.0-150600.10.61.1

*...

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References

* bsc#1232223

* bsc#1237888

* bsc#1243474

* bsc#1245193

* bsc#1247076

* bsc#1247079

* bsc#1247500

* bsc#1247509

* bsc#1249547

* bsc#1249912

* bsc#1249982

* bsc#1250176

* bsc#1250237

* bsc#1250252

* bsc#1250705

* bsc#1251120

* bsc#1251786

* bsc#1252063

* bsc#1252267

* bsc#1252303

* bsc#1252353

* bsc#1252681

* bsc#1252763

* bsc#1252773

* bsc#1252780

* bsc#1252794

* bsc#1252795

* bsc#1252809

* bsc#1252817

* bsc#1252821

* bsc#1252836

* bsc#1252845

* bsc#1252862

* bsc#1252912

* bsc#1252917

* bsc#1252928

* bsc#1253018

* bsc#1253176

* bsc#1253275

* bsc#1253318

* bsc#1253324

* bsc#1253349

* bsc#1253352

* bsc#1253355

* bsc#1253360

* bsc#1253362

* bsc#1253363

* bsc#1253367

* bsc#1253369

* bsc#1253393

* bsc#1253395

* bsc#1253403

* bsc#1253407

* bsc#1253409

* bsc#1253412

* bsc#1253416

* bsc#1253421

* bsc#1253423

* bsc#1253424

* bsc#1253425

* bsc#1253427

* bsc#1253428

* bsc#1253431

* bsc#1253436

* bsc#1253438

* bsc#1253440

* bsc#1253441

* bsc#1253445

* bsc#1253448

* bsc#1253449

* bsc#1253453

* bsc#1253456

* bsc#1253472

* bsc#1253779

## References:

*...

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Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:4521-1
Release Date: 2025-12-24T12:42:51Z
Affected Products: * openSUSE Leap 15.6 * SUSE Linux Enterprise Live Patching 15-SP6 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Real Time Module 15-SP6

Topics%20covered

Topics Covered

security advisory buffer overflow important kernel critical security fix OpenSUSE

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