5.5

CVE-2024-38634: linux Improper Locking

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-38634DEBIAN-CVE-2024-38634
Published 21-06-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-38634 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8% 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
0.19%
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 31 · Related 27
DLA-3840-1DSA-5730-1MGASA-2024-0263MGASA-2024-0266SUSE-SU-2024:2372-1SUSE-SU-2024:2394-1

Timeline

  1. 21-06-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Lock port->lock when calling uart_handle_cts_change() uart_handle_cts_change() has to be called with port lock taken, Since we run it in a separate work, the lock may not be taken at the time of running. Make sure that it's taken by explicitly doing that. Without it we got a splat: WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0 ... Workqueue: max3100-0 max3100_work [max3100] RIP: 0010:uart_handle_cts_change+0xa6/0xb0 ... max3100_handlerx+0xc5/0x110 [max3100] max3100_work+0x12a/0x340 [max3100]

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.19%

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

Ubuntu128 products
  • linuxAll versions (No fix recorded) | < 5.4.0-192.212 | < 5.15.0-121.131 | < 6.8.0-44.44
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1130.140 | < 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≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 44b38924135d2093e2ec1812969464845dd66dc9 | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < ea9b35372b58ac2931bfc1d5bc25e839d1221e30 | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < cc121e3722a0a2c8f716ef991e5425b180a5fb94 | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 78dbda51bb4241b88a52d71620f06231a341f9ba | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 8296bb9e5925b6634259c5d4daee88f0cc0884ec | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 93df2fba6c7dfa9a2f08546ea9a5ca4728758458 | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 865b30c8661924ee9145f442bf32cea549faa869 | ≥ 7831d56b0a3544cbb6f82f76c34ca95e24d5b676, < 77ab53371a2066fdf9b895246505f5ef5a4b5d47 | 2.6.30
  • linux_kernel≥ 2.6.31, < 4.19.316 | ≥ 4.20, < 5.4.278 | ≥ 5.5, < 5.10.219 | ≥ 5.11, < 5.15.161 | ≥ 5.16, < 6.1.93 | ≥ 6.2, < 6.6.33 | ≥ 6.7, < 6.9.4 | 2.6.30 | 2.6.30:rc2 | 2.6.30:rc3 | 2.6.30:rc4 | 2.6.30:rc5 | 2.6.30:rc6 | 2.6.30:rc7 | 2.6.30:rc8
Debian1 product
  • linux< 6.1.94-1 | < 6.9.7-1

3 vendors · 131 products

References

32 links
Show all 32 references