5.5

CVE-2024-42244: USB: serial: mos7840: fix crash on resume

Modified
AliasesUBUNTU-CVE-2024-42244DEBIAN-CVE-2024-42244
Published 07-08-2024Last modified 11-05-2026

Vulnerability summary

CVE-2024-42244 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 36
DLA-4008-1DSA-5747-1RHSA-2024:10274RHSA-2024:10771RHSA-2024:8856RHSA-2024:8870

Timeline

  1. 07-08-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: mos7840: fix crash on resume Since commit c49cfa917025 ("USB: serial: use generic method if no alternative is provided in usb serial layer"), USB serial core calls the generic resume implementation when the driver has not provided one. This can trigger a crash on resume with mos7840 since support for multiple read URBs was added back in 2011. Specifically, both port read URBs are now submitted on resume for open ports, but the context pointer of the second URB is left set to the core rather than mos7840 port structure. Fix this by implementing dedicated suspend and resume functions for mos7840. Tested with Delock 87414 USB 2.0 to 4x serial adapter. [ johan: analyse crash and rewrite commit message; set busy flag on resume; drop bulk-in check; drop unnecessary usb_kill_urb() ]

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu129 products
  • linuxAll versions (No fix recorded) | < 4.4.0-261.295 | < 4.15.0-230.242 | < 5.4.0-200.220 | < 5.15.0-121.131 | < 6.8.0-48.48
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1138.144 | < 4.4.0-1176.191 | < 4.15.0-1174.187 | < 5.4.0-1135.145 | < 5.15.0-1069.75 | < 6.8.0-1018.20
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d83b405383c965498923f3561c3321e2b5df5727, < 932a86a711c722b45ed47ba2103adca34d225b33 | ≥ d83b405383c965498923f3561c3321e2b5df5727, < b14aa5673e0a8077ff4b74f0bb260735e7d5e6a4 | ≥ d83b405383c965498923f3561c3321e2b5df5727, < 1094ed500987e67a9d18b0f95e1812f1cc720856 | ≥ d83b405383c965498923f3561c3321e2b5df5727, < 5ae6a64f18211851c8df6b4221381c438b9a7348 | ≥ d83b405383c965498923f3561c3321e2b5df5727, < 553e67dec846323b5575e78a776cf594c13f98c4 | ≥ d83b405383c965498923f3561c3321e2b5df5727, < c15a688e49987385baa8804bf65d570e362f8576 | 3.3
  • linux_kernel≥ 3.3, < 5.10.222 | ≥ 5.11, < 5.15.163 | ≥ 5.16, < 6.1.100 | ≥ 6.2, < 6.6.41 | ≥ 6.7, < 6.9.10
Debian1 product
  • linux< 6.1.106-1 | < 6.9.10-1

3 vendors · 132 products

References

37 links
Show all 37 references