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Linux KernelOperating system · Linux

CVE-2024-42244

MEDIUM · 5.5 CVSS v3.1 Published 2024-08-07
Fix available
A fix is available. Upgrade to 5.10.222 / 5.15.163 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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() ]

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 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

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.10.222 / 5.15.163 / 6.1.100 or later
Fixed in 5.10.2225.15.1636.1.100
Vendor patch git.kernel.org →
Recommended fix High confidence

Linux kernel 5.10.222 / 5.15.163 / 6.1.100 / 6.6.41 or later (depending on your distribution's kernel branch)

  1. Upgrade the Linux kernel to one of the following fixed versions: 5.10.222+, 5.15.163+, 6.1.100+, or 6.6.41+
  2. After kernel upgrade, reboot the system to load the fixed kernel
  3. If building from source, apply the upstream patch commit 1094ed500987e67a9d18b0f95e1812f1cc720856 which adds dedicated suspend and resume functions to drivers/usb/serial/mos7840.c
Caveat Kernel upgrades may require driver recompilation for out-of-tree modules; ensure all system dependencies are compatible

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-42244 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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