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TI-2025-16075 Aliases CVE-2025-22126GHSA-mg7c-mfqw-jg72

md: fix mddev uaf while iterating all_mddevs list

Priority LOW 33CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 14 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: md: fix mddev uaf while iterating all_mddevs list While iterating all_mddevs list from md_notify_reboot() and md_exit(), list_for_each_entry_safe is used, and this can race with deletint the next mddev, causing UAF: t1: spin_lock //list_for_each_entry_safe(mddev, n, ...) mddev_get(mddev1) // assume mddev2 is the next entry spin_unlock t2: //remove mddev2 ... mddev_free spin_lock list_del spin_unlock kfree(mddev2) mddev_put(mddev1) spin_lock //continue dereference mddev2->all_mddevs The old helper for_each_mddev() actually grab the reference of mddev2 while holding the lock, to prevent from being freed. This problem can be fixed the same way, however, the code will be complex. Hence switch to use list_for_each_entry, in this case mddev_put() can free the mddev1 and it's not safe as well. Refer to md_seq_show(), also factor out a helper mddev_put_locked() to fix this problem.

Why it matters now

EPSS 0.00198 9th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.135, 6.6.88, 6.12.25 +2Red Hat: 4 advisoriesRed Hat: 14 fixed, 3 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.0 and later6.1.135, 6.6.88, 6.12.25, 6.14.2, 6.15Patch availableCNA
  • Linux VendorLinux Affected 6.0 and later Fixed in 6.1.135, 6.6.88, 6.12.25, 6.14.2, 6.15 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.0 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.25; 6.13 to before 6.14.2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.0 to before 6.1.135; 6.2 to before 6.6.88; 6.7 to before 6.12.25; 6.13 to before 6.14.2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.135, 6.6.88, 6.12.25, 6.14.2, 6.15

Red Hat 4 advisories

  • RHSA-2025:10701 Released 2025-07-09 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.76.1.el9_4, libperf-5.14.0-427.76.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.76.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.76.1.el9_4, kernel-64k-devel-5.14.0-427.76.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.76.1.el9_4, kernel-5.14.0-427.76.1.el9_4, kernel-64k-5.14.0-427.76.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.76.1.el9_4, kernel-rt-core-5.14.0-427.76.1.el9_4, kernel-rt-debug-5.14.0-427.76.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.76.1.el9_4, kernel-rt-core-5.14.0-427.76.1.el9_4, kernel-rt-debug-5.14.0-427.76.1.el9_4 +11
  • RHSA-2025:10547 Released 2025-07-08 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.122.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.122.1.el9_2, kernel-64k-devel-5.14.0-284.122.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.122.1.el9_2, kernel-5.14.0-284.122.1.el9_2, kernel-64k-5.14.0-284.122.1.el9_2 +29
  • RHSA-2025:10536 Released 2025-07-08 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-core-5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-5.14.0-284.122.1.rt14.407.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-core-5.14.0-284.122.1.rt14.407.el9_2, kernel-rt-debug-5.14.0-284.122.1.rt14.407.el9_2 +11
Show 1 more Red Hat advisories
  • RHSA-2025:9080 Released 2025-06-16 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.22.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.22.1.el9_6, kernel-64k-devel-5.14.0-570.22.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.22.1.el9_6, kernel-64k-5.14.0-570.22.1.el9_6, kernel-64k-core-5.14.0-570.22.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.22.1.el9_6, libperf-5.14.0-570.22.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.22.1.el9_6, kernel-rt-64k-5.14.0-570.22.1.el9_6, kernel-rt-64k-core-5.14.0-570.22.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.22.1.el9_6, kernel-rt-core-5.14.0-570.22.1.el9_6, kernel-rt-debug-5.14.0-570.22.1.el9_6 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:10701
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:9080
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:10547
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:10701
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:9080
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:10547
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:10701
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:9080
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:9080
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2025:10536
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:10701
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:9080
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2025:10536
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:10701
Not affected: 2 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-22126
  2. 2026-10-03 Alias added: GHSA-mg7c-mfqw-jg72

References

Patch 5

  • 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