AZL-90506
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90506.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-90506
- Upstream
- Published
- 2026-06-25T09:16:45Z
- Modified
- 2026-09-02T06:51:55Z
- Summary
- CVE-2026-53272 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
erofs: fix use-after-free on sbi->sync_decompress
zerofsdecompresskickoff() can race with filesystem unmount, causing a use-after-free on sbi->syncdecompress.
When I/O completes, zerofsendio() calls zerofsdecompresskickoff() to queue zerofsdecompressqueuework() 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 queuework zerofsdecompressqueuework (all folios are unlocked) cleanupmnt .. erofskillsb erofssbfree kfree(sbi) access sbi->syncdecompress // UAF!!
- References