7.8

CVE-2026-80952: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-80952DEBIAN-CVE-2026-80952
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80952 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:11805-1USN-8800-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix info leak and UAF in device unregister path i3c_master_unregister_i3c_devs() clears i3cdev->dev->desc before calling device_unregister(). During device_unregister(), device_del() emits a KOBJ_REMOVE uevent and unbinds the driver while the device descriptor is still expected to be valid. As a result, i3c_device_uevent() and a racing modalias_show() can observe a NULL desc and fall back to an uninitialized stack struct i3c_device_info, leaking kernel stack contents in the generated modalias. Driver .remove() callbacks may also encounter an unexpected NULL desc during unbind. Keep desc valid until device_unregister() has completed. Since device_unregister() drops the device reference and may free the device, take an extra reference with get_device() before unregistering. Clear desc afterwards and release the extra reference with put_device(). This preserves the release-time invariant that desc must be NULL while avoiding both the information leak and a potential use-after-free from writing desc after the device has been released.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.13%

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

Ubuntu165 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 109995153898454c7795c2c299fd0a0b57456a4b | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < c64daaaba08e490c8347ff60aacac4dd51249f91 | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < ef72ff6650c4ebf2b444708d84df66db42f262d9 | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49 | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 94fb9786d67a8f8b899e77381620f86bad94fdf7 | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < 4837be0f9ac2efe5e83b35a696b6242c473d280c | ≥ 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0, < d2c743efd2d1ee64e94324664808f623dd865872 | 5.0

3 vendors · 168 products

References

14 links
Show all 14 references