7.8

CVE-2026-53400: linux Race Condition

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-53400DEBIAN-CVE-2026-53400
Published 19-07-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-53400 is a high (CVSS 7.8) Race Condition vulnerability in linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.1% 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
0.11%
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 36 · Related 35
MGASA-2026-0312OPENSUSE-SU-2026:11339-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23221-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix adapter registration race Adapters can be looked up based on their id using i2c_get_adapter() which takes a reference to the embedded struct device. Make sure that the adapter (including its struct device) has been initialised before adding it to the IDR to avoid accessing uninitialised data which could, for example, lead to NULL-pointer dereferences or use-after-free. Note that the i2c-dev chardev, which is registered from a bus notifier, currently uses i2c_get_adapter() so the adapter needs to be added to the IDR before registration.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

0.00 pp

From 0.10% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.11%

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

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < 2e57c788e71f1763445f812eba4e0b4a2fbd0646 | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < a4365bc41baaf67f3a5aa8556d23544e6ec7480a | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < 1febb174815bcae56d73587e99e8f87e02f0784d | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < da9d8d9711f78deebc202d0cffcf577e45ee8621 | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < 78793c75dc6d0ff2e4d50ad617349b328a99054e | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < 6a946038f2a5a8c29048c6af369d4e391448a5c5 | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0 | ≥ 6e13e641841833cc2aa5baefe89bb04bc388801b, < ba14d7cf2fe7284610a29854bdff22b2537d3ce6 | 2.6.22
  • linux_kernel≥ 2.6.22, < 5.10.261 | ≥ 5.11, < 5.15.212 | ≥ 5.16, < 6.1.178 | ≥ 6.2, < 6.6.145 | ≥ 6.7, < 6.12.95 | ≥ 6.13, < 6.18.38 | ≥ 6.19, < 7.1.3
Debian1 product
  • linux< 6.1.180-1 | < 6.12.95-1 | < 7.1.3-1

3 vendors · 172 products

References

35 links
Show all 35 references