CVE-2025-40070: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-40070DEBIAN-CVE-2025-40070
Published 28-10-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-40070 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.1% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.24%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 52 · Related 47
DLA-4379-1DLA-4404-1DSA-6053-1MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1

Timeline

  1. 28-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: pps: fix warning in pps_register_cdev when register device fail Similar to previous commit 2a934fdb01db ("media: v4l2-dev: fix error handling in __video_register_device()"), the release hook should be set before device_register(). Otherwise, when device_register() return error and put_device() try to callback the release function, the below warning may happen. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4760 at drivers/base/core.c:2567 device_release+0x1bd/0x240 drivers/base/core.c:2567 Modules linked in: CPU: 1 UID: 0 PID: 4760 Comm: syz.4.914 Not tainted 6.17.0-rc3+ #1 NONE RIP: 0010:device_release+0x1bd/0x240 drivers/base/core.c:2567 Call Trace: <TASK> kobject_cleanup+0x136/0x410 lib/kobject.c:689 kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0xe9/0x130 lib/kobject.c:737 put_device+0x24/0x30 drivers/base/core.c:3797 pps_register_cdev+0x2da/0x370 drivers/pps/pps.c:402 pps_register_source+0x2f6/0x480 drivers/pps/kapi.c:108 pps_tty_open+0x190/0x310 drivers/pps/clients/pps-ldisc.c:57 tty_ldisc_open+0xa7/0x120 drivers/tty/tty_ldisc.c:432 tty_set_ldisc+0x333/0x780 drivers/tty/tty_ldisc.c:563 tiocsetd drivers/tty/tty_io.c:2429 [inline] tty_ioctl+0x5d1/0x1700 drivers/tty/tty_io.c:2728 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0x194/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x5f/0x2a0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> Before commit c79a39dc8d06 ("pps: Fix a use-after-free"), pps_register_cdev() call device_create() to create pps->dev, which will init dev->release to device_create_release(). Now the comment is outdated, just remove it. Thanks for the reminder from Calvin Owens, 'kfree_pps' should be removed in pps_register_source() to avoid a double free in the failure case.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

+0.02 pp

From 0.22% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu149 products
  • linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ 785c78ed0d39d1717cca3ef931d3e51337b5e90e, < 38c7bb10aae5118dd48fa7a82f7bf93839bcc320 | ≥ 1a7735ab2cb9747518a7416fb5929e85442dec62, < 2a194707ca27a3b0523023fa8b446e5ec922dc51 | ≥ c4041b6b0a7a3def8cf3f3d6120ff337bc4c40f7, < 125527db41805693208ee1aacd7f3ffe6a3a489c | ≥ 91932db1d96b2952299ce30c1c693d834d10ace6, < 4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8 | ≥ cd3bbcb6b3a7caa5ce67de76723b6d8531fb7f64, < cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e | ≥ 7e5ee3281dc09014367f5112b6d566ba36ea2d49, < f01fa3588e0b3cb1540f56d2c6bd99e5b3810234 | ≥ c79a39dc8d060b9e64e8b0fa9d245d44befeefbe, < 0f97564a1fb62f34b3b498e2f12caffbe99c004a | ≥ c79a39dc8d060b9e64e8b0fa9d245d44befeefbe, < b0531cdba5029f897da5156815e3bdafe1e9b88d | 85241f7de216f8298f6e48540ea13d7dcd100870 | ≥ 5.4.291, < 5.4.301 | ≥ 5.10.235, < 5.10.246 | ≥ 5.15.179, < 5.15.195 | ≥ 6.1.129, < 6.1.156 | ≥ 6.6.76, < 6.6.112 | ≥ 6.12.13, < 6.12.53 | ≥ 6.13.2, < 6.14 | 6.14

3 vendors · 151 products

References

43 links
Show all 43 references