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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2025-21726

padata: avoid UAF for reorder_work

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: padata: avoid UAF for reorder_work Although the previous patch can avoid ps and ps UAF for _do_serial, it can not avoid potential UAF issue for reorder_work. This issue can happen just as below: crypto_request crypto_request crypto_del_alg padata_do_serial ... padata_reorder // processes all remaining // requests then breaks while (1) { if (!padata) break; ... } padata_do_serial // new request added list_add // sees the new request queue_work(reorder_work) padata_reorder queue_work_on(squeue->work) ... <kworker context> padata_serial_worker // completes new request, // no more outstanding // requests crypto_del_alg // free pd <kworker context> invoke_padata_reorder // UAF of pd To avoid UAF for 'reorder_work', get 'pd' ref before put 'reorder_work' into the 'serial_wq' and put 'pd' ref until the 'serial_wq' finish.

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

  • bbefa1dd6a6d53537c11624752219e39959d04fb to < f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0affected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < 4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1affected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < 7000507bb0d2ceb545c0a690e0c707c897d102c2affected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < 6f45ef616775b0ce7889b0f6077fc8d681ab30bcaffected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < 8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cacaffected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < a54091c24220a4cd847d5b4f36d678edacddbaf0affected
  • bbefa1dd6a6d53537c11624752219e39959d04fb to < dd7d37ccf6b11f3d95e797ebe4e9e886d0332600affected
  • b4c8ed0bf977760a206997b6429a7ac91978f440affected
  • e43d65719527043f1ef79ecba9d4ede58cbc7ffeaffected
  • 5.4.19 to < 5.5affected
  • 5.5.3 to < 5.6affected

Linux Linux

Default version status: affected

  • 5.6affected
  • 0 to < 5.6unaffected
  • 5.10.235 to ≤ 5.10.*unaffected
  • 5.15.179 to ≤ 5.15.*unaffected
  • 6.1.129 to ≤ 6.1.*unaffected
  • 6.6.76 to ≤ 6.6.*unaffected
  • 6.12.13 to ≤ 6.12.*unaffected
  • 6.13.2 to ≤ 6.13.*unaffected
  • 6.14 to ≤ *unaffected

References