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Vulnerability · Published Sep 24, 2026 · Assigned by Linux

CVE-2026-93269ext4: fix circular lock dependency in ext4_ext_migrate

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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.5% 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: ext4: fix circular lock dependency in ext4_ext_migrate Move iput(tmp_inode) after ext4_writepages_up_write() to avoid a circular lock dependency between s_writepages_rwsem and sb_internal (freeze protection). The deadlock scenario: CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount) ---- ---- ext4_ext_migrate() ext4_writepages_down_write() s_writepages_rwsem (write) ext4_evict_inode() sb_start_intwrite() [sb_internal] ... ext4_writepages() s_writepages_rwsem (read) [BLOCKED] iput(tmp_inode) ext4_evict_inode() sb_start_intwrite() [BLOCKED] The tmp_inode is a temporary inode with nlink=0 created solely for building the extent tree. Its eviction does not require s_writepages_rwsem protection, so deferring iput() until after releasing the rwsem is safe.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-93269
Debian:13linux6.12.111-1DEBIAN-CVE-2026-93269
Debian:14linux7.2.6-1DEBIAN-CVE-2026-93269
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-93269
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93269
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-93269
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-93269
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-93269

Affected products (as reported)

VendorProductVersions
Linux Linux cb85f4d23f794e24127f3e562cb3b54b0803f456 – before f204882d5eaca09f7848f081c9c9b5bbf2234895cb85f4d23f794e24127f3e562cb3b54b0803f456 – before 452950461241dfed8b1d32e94b227db38c99c5afcb85f4d23f794e24127f3e562cb3b54b0803f456 – before ada23457d4748d6e9c36c6f871fc29a6f558c48ccb85f4d23f794e24127f3e562cb3b54b0803f456 – before e4223231b6860141813637a6413c2371ae4d6fa8cb85f4d23f794e24127f3e562cb3b54b0803f456 – before 32f7ab52875ec7f800ca67e7176e5743a84baddfcb85f4d23f794e24127f3e562cb3b54b0803f456 – before a897682793eba5de51ee6f3152760374afa629cfeb799e163dc2bc1ea0a4820b66f79d32a5e907dfbcc1eab71a67c46b9e24544ac7923f44444174ce
Linux Linux 5.6

References