CVE-2026-89576
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
dm-era: fix shadowed superblock leak on take-snap failure
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().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | 54dd21ca945ecc07885012b9f3e8197f091cfba0 | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | ef00efb6fcaee88f50891279ceced17c614e97f7 | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | e9fa68b89214bc65af0ef963af7ec3cce9f866e0 | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | dc731d7fddfd6149f5e88ea080475d18c36d3c64 | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | d66ceeefb87ddb097b0546bafc581380b816b048 | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | 36ff918637e3517f732188a3c39dbeae5b9cfb1b | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | 6876ca330e741fb8886d12070cb6a7f9cb67257e | Unavailable | None listed |
| eec40579d84873dfb7021eb24c50360f073237c5 | affected | git | 39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.15 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |