AZL-100892
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-100892.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-100892
- Upstream
- Published
- 2026-09-11T20:19:41Z
- Modified
- 2026-09-13T06:06:36Z
- Summary
- CVE-2026-89576 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
dm-era: fix shadowed superblock leak on take-snap failure
metadata_take_snap() bumps the live superblock refcount and then dm_tm_shadow_block() allocates a new block for the metadata snapshot. If the subsequent dm_sm_inc_block() of writeset_tree_root or era_array_root fails, the function only unlocks the clone and returns. The newly allocated shadow block is never returned to the metadata space map, so each failed take-snap permanently leaks one metadata block.
Free the clone with dm_sm_dec_block() on those error paths, matching the final step of metadata_drop_snap().
- References