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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-38031

padata: do not leak refcount in 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: do not leak refcount in reorder_work A recent patch that addressed a UAF introduced a reference count leak: the parallel_data refcount is incremented unconditionally, regardless of the return value of queue_work(). If the work item is already queued, the incremented refcount is never decremented. Fix this by checking the return value of queue_work() and decrementing the refcount when necessary. Resolves: Unreferenced object 0xffff9d9f421e3d80 (size 192): comm "cryptomgr_probe", pid 157, jiffies 4294694003 hex dump (first 32 bytes): 80 8b cf 41 9f 9d ff ff b8 97 e0 89 ff ff ff ff ...A............ d0 97 e0 89 ff ff ff ff 19 00 00 00 1f 88 23 00 ..............#. backtrace (crc 838fb36): __kmalloc_cache_noprof+0x284/0x320 padata_alloc_pd+0x20/0x1e0 padata_alloc_shell+0x3b/0xa0 0xffffffffc040a54d cryptomgr_probe+0x43/0xc0 kthread+0xf6/0x1f0 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30

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

  • f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0 to < b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1affected
  • 4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1 to < 1a426abdf1c86882c9203dd8182f3b8274b89938affected
  • 7000507bb0d2ceb545c0a690e0c707c897d102c2 to < cceb15864e1612ebfbc10ec4e4dcd19a10c0056caffected
  • 6f45ef616775b0ce7889b0f6077fc8d681ab30bc to < 584a729615fa92f4de45480efb7e569d14be1516affected
  • 8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac to < 5300e487487d7a2e3e1e6e9d8f03ed9452e4019eaffected
  • dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 to < 1c65ae4988714716101555fe2b9830e33136d6fbaffected
  • dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 to < d6ebcde6d4ecf34f8495fb30516645db3aea8993affected
  • a54091c24220a4cd847d5b4f36d678edacddbaf0affected
  • 5.10.235 to < 5.10.238affected
  • 5.15.179 to < 5.15.185affected
  • 6.1.129 to < 6.1.141affected
  • 6.6.76 to < 6.6.93affected
  • 6.12.13 to < 6.12.31affected
  • 6.13.2 to < 6.14affected

Linux Linux

Default version status: affected

  • 6.14affected
  • 0 to < 6.14unaffected
  • 5.10.238 to ≤ 5.10.*unaffected
  • 5.15.185 to ≤ 5.15.*unaffected
  • 6.1.141 to ≤ 6.1.*unaffected
  • 6.6.93 to ≤ 6.6.*unaffected
  • 6.12.31 to ≤ 6.12.*unaffected
  • 6.14.9 to ≤ 6.14.*unaffected
  • 6.15 to ≤ *unaffected

References