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Vulnerability · Published Aug 15, 2026 · Assigned by Linux

CVE-2026-72438md/raid10: fix writes_pending and barrier reference leaks on discard failures

High 7.5

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-72438
Debian:13linux6.12.111-1DEBIAN-CVE-2026-72438
Debian:14linux7.1.5-1DEBIAN-CVE-2026-72438
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-72438
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux7.0.0-38.38UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-aws7.0.0-1014.14UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-gcp7.0.0-1014.14UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-gke7.0.0-1008.9UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-38.38~24.04.4UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-ibm7.0.0-1015.15UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1036.39UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1015.15UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-oracle7.0.0-1013.13UBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-realtime7.0.0-38.38.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72438
Ubuntu:26.04:LTSlinux-riscv7.0.0-38.38.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-38.38.1~24.04.1UBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-72438
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-72438
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-72438

Affected products (as reported)

VendorProductVersions
Linux Linux c9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before 2d264c00beadcc67f16d683ab27eed28c047ba2ec9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before 80ac31cce55432034a9eb98262c92ace7866e494c9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before fea33968592559a55a3f5a96a6386bebcaf988a8c9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before 11b35d1906a7277a3d64afe34224133b44327328c9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before d1324b41dabd26787559efaeb430643c627c1eb0c9aa889b035fca4598ae985a0f0c76ebbb547ad2 – before 393d687131d8aa8c7e4de2cb494438e145d20fc239db562b3fedb93978a7e42dd216b306740959f85.15.111 – before 5.16
Linux Linux 5.17

References