5.5

CVE-2026-31687: linux Improper Locking

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-31687DEBIAN-CVE-2026-31687
Published 27-04-2026Last modified 23-05-2026
Open JSON

Vulnerability summary

CVE-2026-31687 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.4% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 37 · Related 37
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 27-04-2026
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: gpio: omap: do not register driver in probe() Commit 11a78b794496 ("ARM: OMAP: MPUIO wake updates") registers the omap_mpuio_driver from omap_mpuio_init(), which is called from omap_gpio_probe(). However, it neither makes sense to register drivers from probe() callbacks of other drivers, nor does the driver core allow registering drivers with a device lock already being held. The latter was revealed by commit dc23806a7c47 ("driver core: enforce device_lock for driver_match_device()") leading to a potential deadlock condition described in [1]. Additionally, the omap_mpuio_driver is never unregistered from the driver core, even if the module is unloaded. Hence, register the omap_mpuio_driver from the module initcall and unregister it in module_exit().

CVSS metrics

3 scores · 3 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

+0.04 pp

From 0.10% on 19-09-2026

19-09-202619-10-2026
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

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 57bcd3feffa79544c73a1a1872472389a391cc79 | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 86588916e1887a5edb8a9161cd7ae81e47a7ed25 | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < a29215961d833f4de33a09c3964d31ebc6083033 | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 1c04c3a4de8d4bcb9202f94c44f26c57c2572308 | ≥ adc1796eced46b48e23ec200a219d635f33a38ee, < 673dafb9a86349a12a93151fd467625614dc7e12 | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 2211d77892913804d16c28c7415b82804ab1e54c | ≥ cd0e0a76e40c2e77bcfc88291d00dca22b00158e, < a7fa9460b86f810913b6779461d0448e7c11214c | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 32f08c3ddd6dda6cbb6c9d715de10f21dccde50f | ≥ 8d76b2488eb3cc0717ab81b60622cff4a5f90f79, < 53a76425e0764421ba93bb9045d2e454667d5687 | ≥ 11a78b7944963a8b052be46108d07a3ced9e2762, < 730e5ebff40c852e3ea57b71bf02a4b89c69435f | ≥ bc82e5f4d7dc8237ae8cabc73aa46fc93c85d98c, < 03db4dc9ad6eb91e640b517e00373ce877682854 | ≥ 6.6.125, < 6.6.126 | ≥ 6.12.72, < 6.12.73 | ≥ 6.18.11, < 6.18.12 | ≥ 6.19.1, < 6.19.2 | 2.6.22
  • linux_kernel≥ 2.6.22, < 5.10.251 | ≥ 5.11, < 5.15.201 | ≥ 5.16, < 6.1.164 | ≥ 6.2, < 6.6.125 | ≥ 6.7, < 6.12.72 | ≥ 6.13, < 6.18.11 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7
Debian1 product
  • linux< 6.1.164-1 | < 6.12.73-1 | < 6.18.12-1

3 vendors · 160 products

References

40 links
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