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CVE-2025-40319— bpf: Sync pending IRQ work before freeing ring buffer

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，该漏洞源于未同步挂起的IRQ工作，可能导致内存损坏。

CVSS 7.8 · High EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 457f44363a8894135c85b7a9afd2bd8196db24ab< 47626748a2a00068dbbd5836d19076637b4e235b affected
457f44363a8894135c85b7a9afd2bd8196db24ab< de2ce6b14bc3e565708a39bdba3ef9162aeffc72 affected
457f44363a8894135c85b7a9afd2bd8196db24ab< e1828c7a8d8135e21ff6adaaa9458c32aae13b11 affected
457f44363a8894135c85b7a9afd2bd8196db24ab< 6451141103547f4efd774e912418a3b4318046c6 affected
457f44363a8894135c85b7a9afd2bd8196db24ab< 10ca3b2eec384628bc9f5d8190aed9427ad2dde6 affected
457f44363a8894135c85b7a9afd2bd8196db24ab< 430e15544f11f8de26b2b5109c7152f71b78295e affected
457f44363a8894135c85b7a9afd2bd8196db24ab< 4e9077638301816a7d73fa1e1b4c1db4a7e3b59c affected
5.8 affected
… +8 more rows
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I. Basic Information for CVE-2025-40319

Vulnerability Information
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Vulnerability Title
bpf: Sync pending IRQ work before freeing ring buffer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Sync pending IRQ work before freeing ring buffer Fix a race where irq_work can be queued in bpf_ringbuf_commit() but the ring buffer is freed before the work executes. In the syzbot reproducer, a BPF program attached to sched_switch triggers bpf_ringbuf_commit(), queuing an irq_work. If the ring buffer is freed before this work executes, the irq_work thread may accesses freed memory. Calling `irq_work_sync(&rb->work)` ensures that all pending irq_work complete before freeing the buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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，该漏洞源于未同步挂起的IRQ工作，可能导致内存损坏。
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 457f44363a8894135c85b7a9afd2bd8196db24ab ~ 47626748a2a00068dbbd5836d19076637b4e235b -
Linux Linux 5.8 -

II. Public POCs for CVE-2025-40319

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III. Intelligence Information for CVE-2025-40319

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Same Patch Batch · Linux · 2025-12-08 · 82 CVEs total

CVE-2023-53751 9.8 CRITICAL cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
CVE-2025-40320 9.8 CRITICAL smb: client: fix potential cfid UAF in smb2_query_info_compound
CVE-2023-53769 9.3 CRITICAL virt/coco/sev-guest: Double-buffer messages
CVE-2025-40318 8.8 HIGH Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once
CVE-2023-53764 8.8 HIGH wifi: ath12k: Handle lock during peer_id find
CVE-2023-53762 8.8 HIGH Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
CVE-2025-40292 8.4 HIGH virtio-net: fix received length check in big packets
CVE-2025-40309 8.0 HIGH Bluetooth: SCO: Fix UAF on sco_conn_free
CVE-2025-40302 7.8 HIGH media: videobuf2: forbid remove_bufs when legacy fileio is active
CVE-2023-53763 7.8 HIGH Revert "f2fs: fix to do sanity check on extent cache correctly"
CVE-2023-53768 7.8 HIGH regmap-irq: Fix out-of-bounds access when allocating config buffers
CVE-2025-40297 7.8 HIGH net: bridge: fix use-after-free due to MST port state bypass
CVE-2022-50630 7.8 HIGH mm: hugetlb: fix UAF in hugetlb_handle_userfault
CVE-2022-50623 7.8 HIGH fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()
CVE-2023-53759 7.8 HIGH HID: hidraw: fix data race on device refcount
CVE-2025-40317 7.8 HIGH regmap: slimbus: fix bus_context pointer in regmap init calls
CVE-2023-53747 7.8 HIGH vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF
CVE-2025-40323 7.8 HIGH fbcon: Set fb_display[i]->mode to NULL when the mode is released
CVE-2023-53753 7.8 HIGH drm/amd/display: fix mapping to non-allocated address
CVE-2023-53752 7.8 HIGH net: deal with integer overflows in kmalloc_reserve()

Showing top 20 of 82 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40319

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