High 7.8Published Jun 25, 2026

CVE-2026-53272erofs: fix use-after-free on sbi->sync_decompress

Updated under an hour ago (Oct 27, 2026, 6:23 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: erofs: fix use-after-free on sbi->sync_decompress z_erofs_decompress_kickoff() can race with filesystem unmount, causing a use-after-free on sbi->sync_decompress. When I/O completes, z_erofs_endio() calls z_erofs_decompress_kickoff() to queue z_erofs_decompressqueue_work() asynchronously. Then, after all folios are unlocked, unmount workflow can proceed and sbi will be freed before accessing to sbi->sync_decompress. Thread (unmount) I/O completion kworker queue_work z_erofs_decompressqueue_work (all folios are unlocked) cleanup_mnt .. erofs_kill_sb erofs_sb_free kfree(sbi) access sbi->sync_decompress // UAF!!

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	40452ffca3c1a0f2994e826f9fa213b107f1a2d4 builds before 59db5d8bcc65e04d8598afd81ec3a18edb407470; 40452ffca3c1a0f2994e826f9fa213b107f1a2d4 builds before 86ab00cf81d44b675bb23db62b88fd76c8ac8cea; 40452ffca3c1a0f2994e826f9fa213b107f1a2d4 builds before 00bf6868df65fa95b3854996246d15759fdc7070; 40452ffca3c1a0f2994e826f9fa213b107f1a2d4 builds before 95caf60da33d87ed26c28993620f0d92487b0296; 40452ffca3c1a0f2994e826f9fa213b107f1a2d4 builds before 1aee05e814d292064bf5fa15733741040cdc48ba	CNA record
linux linux_kernel linux:linux_kernel	from 5.17 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; 7.1; 7.1; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/59db5d8bcc65e04d8598afd81ec3a18edb407470
https://git.kernel.org/stable/c/86ab00cf81d44b675bb23db62b88fd76c8ac8cea	patch
https://git.kernel.org/stable/c/00bf6868df65fa95b3854996246d15759fdc7070	patch
https://git.kernel.org/stable/c/95caf60da33d87ed26c28993620f0d92487b0296	patch
https://git.kernel.org/stable/c/1aee05e814d292064bf5fa15733741040cdc48ba	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.