In the Linux kernel, the following vulnerability has been resolved:

md/raid1: free r1_bio when REQ_NOWAIT is set and read would block on retry

When a read is retried, raid1_read_request() may be called with a
pre-allocated r1_bio. If wait_read_barrier() fails for a REQ_NOWAIT
read, the bio is completed and the function returns immediately. In this
case the existing r1_bio is leaked.

This fixes a leak of pre-allocated r1_bio structures for retried reads.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < d1eda529a4bf6b866d02755723ee0eb1f037a5ed
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < c66ed3e6371f5dba8f5d8ab810d6683ddc99201e
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < db58075bc9c2ad2731f9c063859b47104bc2e7ef
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < 6d92dbd73d19a0622f60352ce9d9379f7a760112
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < c6e6354295845698d2fdfa20b71fc404786f7e93
5aa705039c4fca84575539bfa2b8a28454a3d2ca affected < 69ad6ce47f9bf2b9fe0ed69b042db993d33bbf12
Linux Linux affected
Version Status Constraints
5.17 affected —
0 unaffected < 5.17
6.1.178 unaffected ≤ 6.1.*
6.6.145 unaffected ≤ 6.6.*
6.12.97 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2-rc1 unaffected ≤ *

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Fixes

Solution

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Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/69ad6ce47f9bf2b9fe0ed69b042db993d33bbf12 cve-icon cve-icon
https://git.kernel.org/stable/c/6d92dbd73d19a0622f60352ce9d9379f7a760112 cve-icon cve-icon
https://git.kernel.org/stable/c/c66ed3e6371f5dba8f5d8ab810d6683ddc99201e cve-icon cve-icon
https://git.kernel.org/stable/c/c6e6354295845698d2fdfa20b71fc404786f7e93 cve-icon cve-icon
https://git.kernel.org/stable/c/d1eda529a4bf6b866d02755723ee0eb1f037a5ed cve-icon cve-icon
https://git.kernel.org/stable/c/db58075bc9c2ad2731f9c063859b47104bc2e7ef cve-icon cve-icon
History

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: md/raid1: free r1_bio when REQ_NOWAIT is set and read would block on retry When a read is retried, raid1_read_request() may be called with a pre-allocated r1_bio. If wait_read_barrier() fails for a REQ_NOWAIT read, the bio is completed and the function returns immediately. In this case the existing r1_bio is leaked. This fixes a leak of pre-allocated r1_bio structures for retried reads.
Title md/raid1: free r1_bio when REQ_NOWAIT is set and read would block on retry
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-15T05:56:50.732Z

Reserved: 2026-08-09T03:40:39.929Z

Link: CVE-2026-72437

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:22:17.560

Modified: 2026-08-15T06:22:17.560

Link: CVE-2026-72437

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.