CVE-2026-93269

CVE CVE-2026-93269EUVD EUVD-2026-86141Published 2026-09-24T15:52:09.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux cb85f4d23f794e24127f3e562cb3b54b0803f456 <a897682793eba5de51ee6f3152760374afa629cf; patch: 6.18.52; cb85f4d23f794e24127f3e562cb3b54b0803f456 <452950461241dfed8b1d32e94b227db38c99c5af; cb85f4d23f794e24127f3e562cb3b54b0803f456 <ada23457d4748d6e9c36c6f871fc29a6f558c48c; eb799e163dc2bc1ea0a4820b66f79d32a5e907df; 4.9.215 <4.10; 5.6; 69f8a7991fd93c49096ddd11574db3e7df238b7b; patch: 7.3-rc1; patch: 0; cb85f4d23f794e24127f3e562cb3b54b0803f456 <e4223231b6860141813637a6413c2371ae4d6fa8; 8cf20fb73e73a4c4df0328b5297842c5ef34fdd9; bcc1eab71a67c46b9e24544ac7923f44444174ce; patch: 6.12.110; cb85f4d23f794e24127f3e562cb3b54b0803f456 <32f7ab52875ec7f800ca67e7176e5743a84baddf; patch: 6.6.157; e5d25003d059649e18a249635ed5ca7a7b1de5ad; 4.19.107 <4.20; 5.5.7 <5.6; 4.14.172 <4.15; patch: 7.2.6; 5.4.23 <5.5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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