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TI-2025-26072 Aliases CVE-2025-38737GHSA-86v2-3hvm-7hww

cifs: Fix oops due to uninitialised variable

Priority MEDIUM 42CWE-908Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix oops due to uninitialised variable Fix smb3_init_transform_rq() to initialise buffer to NULL before calling netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it is given. Setting it to NULL means it should start a fresh buffer, but the value is currently undefined.

Why it matters now

EPSS 0.00391 33rd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.12.44, 6.16.4, 6.17Red Hat: 2 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.12 and later6.12.44, 6.16.4, 6.17Patch availableCNA
  • Linux VendorLinux Affected 6.12 and later Fixed in 6.12.44, 6.16.4, 6.17 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.12 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:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.12 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

Remediation

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

Red Hat 2 advisories

  • RHSA-2025:23009 Released 2025-12-10 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.48.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.48.1.el10_0, kernel-64k-devel-6.12.0-55.48.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.48.1.el10_0, kernel-64k-6.12.0-55.48.1.el10_0, kernel-64k-core-6.12.0-55.48.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.48.1.el10_0, libperf-6.12.0-55.48.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.48.1.el10_0, kernel-rt-64k-6.12.0-55.48.1.el10_0, kernel-rt-64k-core-6.12.0-55.48.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.48.1.el10_0, kernel-rt-core-6.12.0-55.48.1.el10_0, kernel-rt-debug-6.12.0-55.48.1.el10_0 +11
  • RHSA-2025:22854 Released 2025-12-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.20.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.20.1.el10_1, kernel-64k-devel-6.12.0-124.20.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.20.1.el10_1, kernel-64k-6.12.0-124.20.1.el10_1, kernel-64k-core-6.12.0-124.20.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.20.1.el10_1, libperf-6.12.0-124.20.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.20.1.el10_1, kernel-rt-64k-6.12.0-124.20.1.el10_1, kernel-rt-64k-core-6.12.0-124.20.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.20.1.el10_1, kernel-rt-core-6.12.0-124.20.1.el10_1, kernel-rt-debug-6.12.0-124.20.1.el10_1 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2025:23009
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2025:23009
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2025:23009
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2025:23009
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:22854
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2025:23009
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-38737
  2. 2026-10-03 Alias added: GHSA-86v2-3hvm-7hww

References

Patch 3

  • 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