CVE-2025-38031None▾ SunlitIn 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 unconditi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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
Linux >= f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0 < b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1Linux >= 4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1 < 1a426abdf1c86882c9203dd8182f3b8274b89938Linux >= 7000507bb0d2ceb545c0a690e0c707c897d102c2 < cceb15864e1612ebfbc10ec4e4dcd19a10c0056cLinux >= 6f45ef616775b0ce7889b0f6077fc8d681ab30bc < 584a729615fa92f4de45480efb7e569d14be1516Linux >= 8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac < 5300e487487d7a2e3e1e6e9d8f03ed9452e4019eLinux >= dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 < 1c65ae4988714716101555fe2b9830e33136d6fbLinux >= dd7d37ccf6b11f3d95e797ebe4e9e886d0332600 < d6ebcde6d4ecf34f8495fb30516645db3aea8993Linux a54091c24220a4cd847d5b4f36d678edacddbaf0Linux >= 5.10.235 < 5.10.238Linux >= 5.15.179 < 5.15.185Linux >= 6.1.129 < 6.1.141Linux >= 6.6.76 < 6.6.93Linux >= 6.12.13 < 6.12.31Linux >= 6.13.2 < 6.14Linux 6.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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