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

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

https://cvefeed.io/rssfeed/latest.atom / Thu, 06/25/2026 - 16:01
CVE ID :CVE-2026-53272
Published : June 25, 2026, 8:39 a.m. | 5 hours, 1 minute ago
Description :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!!
Severity: 0.0 | NA
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