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CVE-2026-72440— md/raid1: fix writes_pending and barrier reference leaks on write failures

CVSS 7.1 · High EPSS 0.36% · P29

Possible ATT&CK Techniques 1AI

T1564.002 · Hidden Users

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux5aa705039c4fca84575539bfa2b8a28454a3d2ca< bffbbfcbd9393e315a7a4286dcd70e875265db9aaffected
5aa705039c4fca84575539bfa2b8a28454a3d2ca< 8e065a1602511282fc0da2dc89445e0eb71a681caffected
5.17affected
< 5.17unaffected
7.1.5≤ 7.1.*unaffected
7.2≤ *unaffected
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I. Basic Information for CVE-2026-72440

Vulnerability Information
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Vulnerability Title
md/raid1: fix writes_pending and barrier reference leaks on write failures
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix writes_pending and barrier reference leaks on write failures raid1_make_request() acquires a writes_pending reference with md_write_start() before calling raid1_write_request(). Several failure paths in raid1_write_request() complete the bio and return without reaching the normal write completion path, causing the corresponding md_write_end() to be skipped. Make raid1_write_request() return a status indicating whether the write request was successfully queued. This allows raid1_make_request() to call md_write_end() when raid1_write_request() fails. Additionally, if wait_blocked_rdev() fails after wait_barrier() succeeds, the associated barrier reference is not released. Call allow_barrier() before returning from that path to keep the barrier accounting balanced.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 5aa705039c4fca84575539bfa2b8a28454a3d2ca ~ bffbbfcbd9393e315a7a4286dcd70e875265db9a -
LinuxLinux 5.17 -

II. Public POCs for CVE-2026-72440

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III. Intelligence Information for CVE-2026-72440

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Patches & Fixes for CVE-2026-72440 (2)

Same Patch Batch · Linux · 2026-08-15 · 846 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-724639.8 CRITICALxfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-722489.8 CRITICALnetfilter: flowtable: support IPIP tunnel with direct xmit
CVE-2026-723819.8 CRITICALksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-724779.8 CRITICALfs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion
CVE-2026-724729.8 CRITICALnfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-744069.8 CRITICALvxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-722219.8 CRITICALsunrpc: wait for in-flight TLS handshake callback when cancel loses race
CVE-2026-721379.8 CRITICALxfrm: nat_keepalive: avoid double free on send error
CVE-2026-743769.8 CRITICALmd/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-744019.8 CRITICALdlm: fix add msg handle in send_queue ordered
CVE-2026-722349.8 CRITICALbatman-adv: access unicast_ttvn skb->data only after skb realloc

Showing top 20 of 846 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72440

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