CVE-2025-39685— comedi: pcl726: Prevent invalid irq number
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | fff46207245cd9e39c05b638afaee2478e64914b< bab220b0bb5af652007e278e8e8357f952b0e1ea | affected |
fff46207245cd9e39c05b638afaee2478e64914b< 5a33d07c94ba91306093e823112a7aa9727549f6 | affected | ||
fff46207245cd9e39c05b638afaee2478e64914b< 0eb4ed2aa261dee228f1668dbfa6d87353e8162d | affected | ||
fff46207245cd9e39c05b638afaee2478e64914b< a3cfcd0c78c80ca7cd80372dc28f77d01be57bf6 | affected | ||
fff46207245cd9e39c05b638afaee2478e64914b< d8992c9a01f81128f36acb7c5755530e21fcd059 | affected | ||
fff46207245cd9e39c05b638afaee2478e64914b< 96cb948408b3adb69df7e451ba7da9d21f814d00 | affected | ||
3.13 | affected | ||
< 3.13 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2025-39685
Vulnerability Information
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Vulnerability Title
comedi: pcl726: Prevent invalid irq number
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: comedi: pcl726: Prevent invalid irq number The reproducer passed in an irq number(0x80008000) that was too large, which triggered the oob. Added an interrupt number check to prevent users from passing in an irq number that was too large. If `it->options[1]` is 31, then `1 << it->options[1]` is still invalid because it shifts a 1-bit into the sign bit (which is UB in C). Possible solutions include reducing the upper bound on the `it->options[1]` value to 30 or lower, or using `1U << it->options[1]`. The old code would just not attempt to request the IRQ if the `options[1]` value were invalid. And it would still configure the device without interrupts even if the call to `request_irq` returned an error. So it would be better to combine this test with the test below.
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comedi/pcl726模块未验证中断号有效性。
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
II. Public POCs for CVE-2025-39685
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-39685 (1)
Same Patch Batch · Linux · 2025-09-05 · 60 CVEs total
| CVE-2025-39726 | 9.8 CRITICAL | s390/ism: fix concurrency management in ism_cmd() |
| CVE-2025-39682 | 9.8 CRITICAL | tls: fix handling of zero-length records on the rx_list |
| CVE-2025-38734 | 9.8 CRITICAL | net/smc: fix UAF on smcsk after smc_listen_out() |
| CVE-2025-39702 | 9.8 CRITICAL | ipv6: sr: Fix MAC comparison to be constant-time |
| CVE-2025-39703 | 9.8 CRITICAL | net, hsr: reject HSR frame if skb can't hold tag |
| CVE-2025-38737 | 9.8 CRITICAL | cifs: Fix oops due to uninitialised variable |
| CVE-2025-39673 | 9.8 CRITICAL | ppp: fix race conditions in ppp_fill_forward_path |
| CVE-2025-39704 | 8.8 HIGH | LoongArch: KVM: Fix stack protector issue in send_ipi_data() |
| CVE-2025-39718 | 8.4 HIGH | vsock/virtio: Validate length in packet header before skb_put() |
| CVE-2025-39711 | 7.8 HIGH | media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls |
| CVE-2025-39710 | 7.8 HIGH | media: venus: Add a check for packet size after reading from shared memory |
| CVE-2025-39697 | 7.8 HIGH | NFS: Fix a race when updating an existing write |
| CVE-2025-39714 | 7.8 HIGH | media: usbtv: Lock resolution while streaming |
| CVE-2025-39717 | 7.8 HIGH | open_tree_attr: do not allow id-mapping changes without OPEN_TREE_CLONE |
| CVE-2025-39698 | 7.8 HIGH | io_uring/futex: ensure io_futex_wait() cleans up properly on failure |
| CVE-2025-38731 | 7.8 HIGH | drm/xe: Fix vm_bind_ioctl double free bug |
| CVE-2025-39696 | 7.8 HIGH | ALSA: hda: tas2781: Fix wrong reference of tasdevice_priv |
| CVE-2025-39691 | 7.8 HIGH | fs/buffer: fix use-after-free when call bh_read() helper |
| CVE-2025-39689 | 7.8 HIGH | ftrace: Also allocate and copy hash for reading of filter files |
| CVE-2025-39677 | 7.8 HIGH | net/sched: Fix backlog accounting in qdisc_dequeue_internal |
Showing top 20 of 60 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
Same vendor: Linux
- CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev - CVE-2026-74575
thunderbolt: Prevent XDomain delayed work use-after-free on
V. Comments for CVE-2025-39685
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