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CVE-2026-89576

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().
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < 54dd21ca945ecc07885012b9f3e8197f091cfba0
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < ef00efb6fcaee88f50891279ceced17c614e97f7
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < e9fa68b89214bc65af0ef963af7ec3cce9f866e0
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < dc731d7fddfd6149f5e88ea080475d18c36d3c64
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < d66ceeefb87ddb097b0546bafc581380b816b048
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < 36ff918637e3517f732188a3c39dbeae5b9cfb1b
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < 6876ca330e741fb8886d12070cb6a7f9cb67257e
Status affected
Version eec40579d84873dfb7021eb24c50360f073237c5
Version < 39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 3.15
Status affected
Version 0
Version < 3.15
Status unaffected
Version <= 5.10.*
Version 5.10.270
Status unaffected
Version <= 5.15.*
Version 5.15.221
Status unaffected
Version <= 6.1.*
Version 6.1.188
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.109
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.1
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d66ceeefb87ddb097b0546bafc581380b816b048
https://git.kernel.org/stable/c/36ff918637e3517f732188a3c39dbeae5b9cfb1b
https://git.kernel.org/stable/c/6876ca330e741fb8886d12070cb6a7f9cb67257e
https://git.kernel.org/stable/c/39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713
https://git.kernel.org/stable/c/54dd21ca945ecc07885012b9f3e8197f091cfba0
https://git.kernel.org/stable/c/dc731d7fddfd6149f5e88ea080475d18c36d3c64
https://git.kernel.org/stable/c/e9fa68b89214bc65af0ef963af7ec3cce9f866e0
https://git.kernel.org/stable/c/ef00efb6fcaee88f50891279ceced17c614e97f7