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TI-2025-25451 Aliases CVE-2025-38110GHSA-q3p7-pjx2-7hjq

net/mdiobus: Fix potential out-of-bounds clause 45 read/write access

Priority LOW 35CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 15 fixed, 1 without a fix

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: net/mdiobus: Fix potential out-of-bounds clause 45 read/write access When using publicly available tools like 'mdio-tools' to read/write data from/to network interface and its PHY via C45 (clause 45) mdiobus, there is no verification of parameters passed to the ioctl and it accepts any mdio address. Currently there is support for 32 addresses in kernel via PHY_MAX_ADDR define, but it is possible to pass higher value than that via ioctl. While read/write operation should generally fail in this case, mdiobus provides stats array, where wrong address may allow out-of-bounds read/write. Fix that by adding address verification before C45 read/write operation. While this excludes this access from any statistics, it improves security of read/write operation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00202 10th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.94, 6.12.34, 6.15.3 +1Red Hat: 3 advisoriesRed Hat: 15 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.3 and later6.6.94, 6.12.34, 6.15.3, 6.16Patch availableCNA
  • Linux VendorLinux Affected 6.3 and later Fixed in 6.6.94, 6.12.34, 6.15.3, 6.16 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.3 to before 6.6.94; 6.7 to before 6.12.34; 6.13 to before 6.15.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*6.16 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.3 to before 6.6.94; 6.7 to before 6.12.34; 6.13 to before 6.15.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* Versions 6.16 rc1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.6.94, 6.12.34, 6.15.3, 6.16

Red Hat 3 advisories

  • RHSA-2025:11861 Released 2025-07-28 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.30.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.30.1.el9_6, kernel-64k-devel-5.14.0-570.30.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.30.1.el9_6, kernel-64k-5.14.0-570.30.1.el9_6, kernel-64k-core-5.14.0-570.30.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.30.1.el9_6, libperf-5.14.0-570.30.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.30.1.el9_6, kernel-rt-64k-5.14.0-570.30.1.el9_6, kernel-rt-64k-core-5.14.0-570.30.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.30.1.el9_6, kernel-rt-core-5.14.0-570.30.1.el9_6, kernel-rt-debug-5.14.0-570.30.1.el9_6 +11
  • RHSA-2025:11855 Released 2025-07-28 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.24.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.24.1.el10_0, kernel-64k-devel-6.12.0-55.24.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.24.1.el10_0, kernel-64k-6.12.0-55.24.1.el10_0, kernel-64k-core-6.12.0-55.24.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.24.1.el10_0, libperf-6.12.0-55.24.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.24.1.el10_0, kernel-rt-64k-6.12.0-55.24.1.el10_0, kernel-rt-64k-core-6.12.0-55.24.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.24.1.el10_0, kernel-rt-core-6.12.0-55.24.1.el10_0, kernel-rt-debug-6.12.0-55.24.1.el10_0 +11
  • RHSA-2025:11245 Released 2025-07-15 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.77.1.el9_4, libperf-5.14.0-427.77.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.77.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.77.1.el9_4, kernel-64k-devel-5.14.0-427.77.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.77.1.el9_4, kernel-5.14.0-427.77.1.el9_4, kernel-64k-5.14.0-427.77.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.77.1.el9_4, kernel-rt-core-5.14.0-427.77.1.el9_4, kernel-rt-debug-5.14.0-427.77.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.77.1.el9_4, kernel-rt-core-5.14.0-427.77.1.el9_4, kernel-rt-debug-5.14.0-427.77.1.el9_4 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:11245
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:11855
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:11861
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:11245
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:11855
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:11861
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:11245
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:11855
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:11861
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:11855
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:11861
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:11245
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:11855
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:11861
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:11245
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-2025-38110
  2. 2026-10-03 Alias added: GHSA-q3p7-pjx2-7hjq
  3. 2026-10-16 CISA SSVC decision points changed

References

Patch 4

  • 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