TI-2026-50717 Aliases CVE-2026-72438 GHSA-cxhw-2fw5-695j

md/raid10: fix writes_pending and barrier reference leaks on discard failures

LOW 39Published 2026-08-15 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 4 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: md/raid10: fix writes_pending and barrier reference leaks on discard failures raid10_make_request() acquires a writes_pending reference with md_write_start() before calling raid10_handle_discard(). Several failure paths in raid10_handle_discard() complete the bio and return without releasing the corresponding reference, causing md_write_end() to be skipped. Call md_write_end() before returning from these failure paths to keep writes_pending accounting balanced. Additionally, discard split allocation failures can occur after wait_barrier() succeeds. Those paths return without calling allow_barrier(), leaking the associated barrier reference. Release the barrier before returning from those paths.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.005 43rd percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.16, 6.1.191, 6.6.160 +4Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.15.111 to before 5.16	5.16	Patch available	CNA
Linux	Linux	5.17 and later	6.1.191, 6.6.160, 6.12.111, 6.18.53, 7.1.5, 7.2	Patch available	CNA

Linux VendorLinux Affected 5.15.111 to before 5.16 Fixed in 5.16 Patch available CNA
Linux VendorLinux Affected 5.17 and later Fixed in 6.1.191, 6.6.160, 6.12.111, 6.18.53, 7.1.5, 7.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	—	—	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.16
Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.111, 6.18.53, 7.1.5, 7.2

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Not affected: 1 product

Red Hat Enterprise Linux 7

Timeline

2026-10-02 Threatist record created from CVE-2026-72438
2026-10-03 Alias added: GHSA-cxhw-2fw5-695j
2026-10-16 CISA SSVC decision points changed
2026-10-21 Fix available: Linux/[email protected], Linux/Linux@80ac31cce55432034a9eb98262c92ace7866e494 · CNA
2026-10-21 1 new reference · CNA
2026-10-30 Fix available: Linux/Linux@2d264c00beadcc67f16d683ab27eed28c047ba2e, Linux/[email protected] · CNA
2026-10-30 1 new reference · CNA

References

Other 6

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-2021-02452 Incorrect authorization in Ubuntu linux kernel 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

See all 21741 →

Sources

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