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TI-2026-31488 Aliases CVE-2026-43309GHSA-v56g-44rc-67wq

md raid: fix hang when stopping arrays with metadata through dm-raid

Priority LOW 24Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 5 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: md raid: fix hang when stopping arrays with metadata through dm-raid When using device-mapper's dm-raid target, stopping a RAID array can cause the system to hang under specific conditions. This occurs when: - A dm-raid managed device tree is suspended from top to bottom (the top-level RAID device is suspended first, followed by its underlying metadata and data devices) - The top-level RAID device is then removed Removing the top-level device triggers a hang in the following sequence: the dm-raid destructor calls md_stop(), which tries to flush the write-intent bitmap by writing to the metadata sub-devices. However, these devices are already suspended, making them unable to complete the write-intent operations and causing an indefinite block. Fix: - Prevent bitmap flushing when md_stop() is called from dm-raid destructor context and avoid a quiescing/unquescing cycle which could also cause I/O - Still allow write-intent bitmap flushing when called from dm-raid suspend context This ensures that RAID array teardown can complete successfully even when the underlying devices are in a suspended state. This second patch uses md_is_rdwr() to distinguish between suspend and destructor paths as elaborated on above.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00122 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.15, 4.20, 5.5 +7Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.14.292 to before 4.15; 4.19.257 to before 4.20; 5.4.212 to before 5.5; 5.10.140 to before 5.11; 5.15.64 to before 5.16; 5.19.6 to before 5.204.15, 4.20, 5.5, 5.11, 5.16, 5.20Patch availableCNA
LinuxLinux6.0 and later6.12.114, 6.18.16, 6.19.6, 7.0Patch availableCNA
  • Linux VendorLinux Affected 4.14.292 to before 4.15; 4.19.257 to before 4.20; 5.4.212 to before 5.5; 5.10.140 to before 5.11; 5.15.64 to before 5.16; 5.19.6 to before 5.20 Fixed in 4.15, 4.20, 5.5, 5.11, 5.16, 5.20 Patch available CNA
  • Linux VendorLinux Affected 6.0 and later Fixed in 6.12.114, 6.18.16, 6.19.6, 7.0 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.14.292 to before 4.15; 4.19.257 to before 4.20; 5.4.212 to before 5.5; 5.10.140 to before 5.11; 5.15.64 to before 5.16; 5.19.6 to before 6.0; 6.0.1 to before 6.18.16; 6.19 to before 6.19.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*6.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*6.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:*6.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*6.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*6.0 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*6.0 rc7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.14.292 to before 4.15; 4.19.257 to before 4.20; 5.4.212 to before 5.5; 5.10.140 to before 5.11; 5.15.64 to before 5.16; 5.19.6 to before 6.0; 6.0.1 to before 6.18.16; 6.19 to before 6.19.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:* Versions 6.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* Versions 6.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* Versions 6.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:* Versions 6.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:* Versions 6.0 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:* Versions 6.0 rc7 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.15, 4.20, 5.5, 5.11, 5.16, 5.20
  • Fix · CNA Linux (Linux) Fixed in 6.12.114, 6.18.16, 6.19.6, 7.0

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43309
  2. 2026-10-03 Alias added: GHSA-v56g-44rc-67wq
  3. 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@63054027d95200b04f3cf624faa7817e0555d56a · CNA
  4. 2026-10-21 1 new reference · CNA
  5. 2026-11-06 CISA SSVC decision points changed

References

Patch 3

Other 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