CVE-2026-97585 - afs: Fix double-unmap of directory block

afs: Fix double-unmap of directory block

Published Sep 25, 2026

No CVSS score

EPSS 0.20%

Description

Fix afs_edit_dir_remove() to use a cleanup function to unmap the block pointed to by afs_dir_iter::block if it's left pointing to something rather than manually kunmapping the blocks. Manually kunmapping without clearing iter.blocks can result in a double-kunmap if afs_dir_find_block() is called twice in a row (which would be the case if the block being modified is not first in the hash chain).

Affected products

Vendor Linux Product Linux Default
unaffected
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
- Version
  
  Status
  affected
  Constraints
Vendor Linux Product Linux Default
affected
- Version
  6.14
  Status
  affected
  Constraints
  -
- Version
  0
  Status
  unaffected
  Constraints
  <6.14
- Version
  6.18.53
  Status
  unaffected
  Constraints
  <=6.18.*
- Version
  7.2.7
  Status
  unaffected
  Constraints
  <=7.2.*
- Version
  7.3-rc3
  Status
  unaffected
  Constraints
  <=*

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Linux

unaffected

Version	Status	Constraints
	affected
	affected
	affected

Linux

affected

Version	Status	Constraints
6.14	affected	-
0	unaffected	<6.14
6.18.53	unaffected	<=6.18.*
7.2.7	unaffected	<=7.2.*
7.3-rc3	unaffected	<=*

Remediation

No remediation recorded yet.

Weaknesses (0)

No CWE recorded.

References (4)

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86893		Advisory
https://git.kernel.org/stable/c/9d6c703e24da3d39067e3c75f4ac2f6001c2472f
https://git.kernel.org/stable/c/b60f51e4ad0f6f940899788ccc2762db1e3b69e6
https://git.kernel.org/stable/c/e3cfd3eb7d5be7787cc69530b423f788f14d084f