CVE-2024-40967: serial: imx: Introduce timeout when waiting on transmitter empty
Vulnerability summary
CVE-2024-40967 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.8% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 34 · Related 31Timeline
- 12-07-2024PublishedVulnerability first disclosed.
- 23-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: serial: imx: Introduce timeout when waiting on transmitter empty By waiting at most 1 second for USR2_TXDC to be set, we avoid a potential deadlock. In case of the timeout, there is not much we can do, so we simply ignore the transmitter state and optimistically try to continue.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu124 products
- linux< 5.4.0-205.225 | < 5.15.0-121.131 | < 6.8.0-44.44
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1139.149 | < 5.15.0-1069.75 | < 6.8.0-1015.16
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 9ec1882df244c4ee1baa692676fef5e8b0f5487d, < 7f2b9ab6d0b26f16cd38dd9fd91d51899635f7c7 | ≥ 9ec1882df244c4ee1baa692676fef5e8b0f5487d, < 7f9e70c68b7ace0141fe3bc94bf7b61296b71916 | ≥ 9ec1882df244c4ee1baa692676fef5e8b0f5487d, < 982ae3376c4c91590d38dc8a676c10f7df048a44 | ≥ 9ec1882df244c4ee1baa692676fef5e8b0f5487d, < 53b2c95547427c358f45515a9f144efee95e3701 | ≥ 9ec1882df244c4ee1baa692676fef5e8b0f5487d, < e533e4c62e9993e62e947ae9bbec34e4c7ae81c2 | c096552004244868391b29f319ea8889d55abe19 | 86236252d2449313bdbac790023cbc957bf6e426 | 34d4dda865d8174f4a437f313c457c42a8fa9535 | ≥ 3.2.30, < 3.3 | ≥ 3.4.12, < 3.5 | ≥ 3.5.5, < 3.6 | 3.6
- linux_kernel< 5.15.162 | ≥ 5.16, < 6.1.96 | ≥ 6.2, < 6.6.36 | ≥ 6.7, < 6.9.7
Debian1 product
- linux< 6.1.99-1 | < 6.9.7-1
3 vendors · 127 products
