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TI-2025-26370 Aliases CVE-2025-39694GHSA-wxfj-mrv6-qf72

s390/sclp: Fix SCCB present check

Priority LOW 31CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
High · Low · High
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/sclp: Fix SCCB present check Tracing code called by the SCLP interrupt handler contains early exits if the SCCB address associated with an interrupt is NULL. This check is performed after physical to virtual address translation. If the kernel identity mapping does not start at address zero, the resulting virtual address is never zero, so that the NULL checks won't work. Subsequently this may result in incorrect accesses to the first page of the identity mapping. Fix this by introducing a function that handles the NULL case before address translation.

Why it matters now

EPSS 0.00171 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.149, 6.6.103, 6.12.44 +2Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.16 and later6.1.149, 6.6.103, 6.12.44, 6.16.4, 6.17Patch availableCNA
  • Linux VendorLinux Affected 5.16 and later Fixed in 6.1.149, 6.6.103, 6.12.44, 6.16.4, 6.17 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.16 to before 6.1.149; 6.2 to before 6.6.103; 6.7 to before 6.12.44; 6.13 to before 6.16.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*6.17 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*6.17 rc2VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.16 to before 6.1.149; 6.2 to before 6.6.103; 6.7 to before 6.12.44; 6.13 to before 6.16.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* Versions 6.17 rc2 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.149, 6.6.103, 6.12.44, 6.16.4, 6.17

Red Hat 2 advisories

  • RHSA-2025:16904 Released 2025-09-29 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.37.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.37.1.el10_0, kernel-64k-devel-6.12.0-55.37.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.37.1.el10_0, kernel-64k-6.12.0-55.37.1.el10_0, kernel-64k-core-6.12.0-55.37.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.37.1.el10_0, libperf-6.12.0-55.37.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.37.1.el10_0, kernel-rt-64k-6.12.0-55.37.1.el10_0, kernel-rt-64k-core-6.12.0-55.37.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.37.1.el10_0, kernel-rt-core-6.12.0-55.37.1.el10_0, kernel-rt-debug-6.12.0-55.37.1.el10_0 +11
  • RHSA-2025:16398 Released 2025-09-23 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.46.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.46.1.el9_6, kernel-64k-devel-5.14.0-570.46.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.46.1.el9_6, kernel-64k-5.14.0-570.46.1.el9_6, kernel-64k-core-5.14.0-570.46.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.46.1.el9_6, libperf-5.14.0-570.46.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.46.1.el9_6, kernel-rt-64k-5.14.0-570.46.1.el9_6, kernel-rt-64k-core-5.14.0-570.46.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.46.1.el9_6, kernel-rt-core-5.14.0-570.46.1.el9_6, kernel-rt-debug-5.14.0-570.46.1.el9_6 +11

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:16904
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:16398
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:16904
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:16398
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:16904
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:16398
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:16904
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:16398
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:16904
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:16398
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-39694
  2. 2026-10-03 Alias added: GHSA-wxfj-mrv6-qf72
  3. 2026-10-16 Affected versions changed · Red Hat
  4. 2026-10-16 CVSS score changed · Red Hat

References

Patch 5

Advisory 1

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences