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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-68251

erofs: avoid infinite loops due to corrupted subpage compact indexes

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: avoid infinite loops due to corrupted subpage compact indexes Robert reported an infinite loop observed by two crafted images. The root cause is that `clusterofs` can be larger than `lclustersize` for !NONHEAD `lclusters` in corrupted subpage compact indexes, e.g.: blocksize = lclustersize = 512 lcn = 6 clusterofs = 515 Move the corresponding check for full compress indexes to `z_erofs_load_lcluster_from_disk()` to also cover subpage compact compress indexes. It also fixes the position of `m->type >= Z_EROFS_LCLUSTER_TYPE_MAX` check, since it should be placed right after `z_erofs_load_{compact,full}_lcluster()`.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 3f691aa676f29586e83e6c032713554a290418c3 to < b18a82503a67a530d48f5a5b429e162749fe2c89affected
  • 8d2517aaeea3ab8651bb517bca8f3c8664d318ea to < dbfac1b85d0753996ddfef636934d431b588dd1faffected
  • 8d2517aaeea3ab8651bb517bca8f3c8664d318ea to < 8675447a8794983f2b7e694b378112772c17635eaffected
  • 8d2517aaeea3ab8651bb517bca8f3c8664d318ea to < e13d315ae077bb7c3c6027cc292401bc0f4ec683affected
  • 22438a34d383ec2789eaf450728e38abc53051f8affected
  • 6.6.16 to < 6.6.160affected
  • 6.7.4 to < 6.8affected

Linux Linux

Default version status: affected

  • 6.8affected
  • 0 to < 6.8unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.91 to ≤ 6.12.*unaffected
  • 6.17.6 to ≤ 6.17.*unaffected
  • 6.18 to ≤ *unaffected

References