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CVE-2025-38031— padata: do not leak refcount in reorder_work

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理引用计数，可能导致内存泄漏。

AI Predicted 5.5 Difficulty: Easy EPSS 0.21% · P10

Affected Version Matrix 23

VendorProduct Version RangeStatus
Linux Linux f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0< b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1 affected
4c6209efea2208597dbd3e52dc87a0d1a8f2dbe1< 1a426abdf1c86882c9203dd8182f3b8274b89938 affected
7000507bb0d2ceb545c0a690e0c707c897d102c2< cceb15864e1612ebfbc10ec4e4dcd19a10c0056c affected
6f45ef616775b0ce7889b0f6077fc8d681ab30bc< 584a729615fa92f4de45480efb7e569d14be1516 affected
8ca38d0ca8c3d30dd18d311f1a7ec5cb56972cac< 5300e487487d7a2e3e1e6e9d8f03ed9452e4019e affected
dd7d37ccf6b11f3d95e797ebe4e9e886d0332600< 1c65ae4988714716101555fe2b9830e33136d6fb affected
dd7d37ccf6b11f3d95e797ebe4e9e886d0332600< d6ebcde6d4ecf34f8495fb30516645db3aea8993 affected
a54091c24220a4cd847d5b4f36d678edacddbaf0 affected
… +15 more rows
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I. Basic Information for CVE-2025-38031

Vulnerability Information
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Vulnerability Title
padata: do not leak refcount in reorder_work
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确处理引用计数，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux f4f1b1169fc3694f9bc3e28c6c68dbbf4cc744c0 ~ b9ad8e50e8589607e68e6c4cefa7f72bf35a2cb1 -
Linux Linux 6.14 -

II. Public POCs for CVE-2025-38031

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III. Intelligence Information for CVE-2025-38031

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Patches & Fixes for CVE-2025-38031 (1)

Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

CVE-2025-38075 9.8 CRITICAL scsi: target: iscsi: Fix timeout on deleted connection
CVE-2022-50098 8.8 HIGH scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2025-38052 8.8 HIGH net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
CVE-2022-49934 8.8 HIGH wifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVE-2022-50164 8.8 HIGH wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
CVE-2025-38074 8.8 HIGH vhost-scsi: protect vq->log_used with vq->mutex
CVE-2025-38016 8.8 HIGH HID: bpf: abort dispatch if device destroyed
CVE-2022-49974 8.8 HIGH HID: nintendo: fix rumble worker null pointer deref
CVE-2022-49968 8.0 HIGH ieee802154/adf7242: defer destroy_workqueue call
CVE-2022-50035 7.8 HIGH drm/amdgpu: Fix use-after-free on amdgpu_bo_list mutex
CVE-2022-49944 7.8 HIGH Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()"
CVE-2022-50028 7.8 HIGH gadgetfs: ep_io - wait until IRQ finishes
CVE-2022-49939 7.8 HIGH binder: fix UAF of ref->proc caused by race condition
CVE-2022-50182 7.8 HIGH media: imx-jpeg: Align upwards buffer size
CVE-2022-49935 7.8 HIGH dma-buf/dma-resv: check if the new fence is really later
CVE-2025-38082 7.8 HIGH gpio: virtuser: fix potential out-of-bound write
CVE-2025-38080 7.8 HIGH drm/amd/display: Increase block_sequence array size
CVE-2025-38060 7.8 HIGH bpf: copy_verifier_state() should copy 'loop_entry' field
CVE-2022-50101 7.8 HIGH video: fbdev: vt8623fb: Check the size of screen before memset_io()
CVE-2025-38062 7.8 HIGH genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie

Showing top 20 of 362 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38031

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