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Vulnerability · Published Aug 10, 2026 · Assigned by Linux

CVE-2026-68424mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins()

Unrated

In plain English

A 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 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins() mtd_concat_destroy() frees item->concat so calling mtd_virt_concat_put_mtd_devices(item->concat) leads to a use after free. Fix this by moving mtd_virt_concat_put_mtd_devices() before mtd_concat_destroy()

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:14linux7.1.6-1DEBIAN-CVE-2026-68424
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-68424
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-68424
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-68424

Affected products (as reported)

VendorProductVersions
Linux Linux 43db6366fc2de02050e66389f5628d3fdc9af10a – before 4d91d783f93430c0efa834daff6640c07d87ebbc43db6366fc2de02050e66389f5628d3fdc9af10a – before 75c0c09541b49daa08fddbc2c18c2232f4eab7d8
Linux Linux 7.1

References