USB: serial: mos7840: fix crash on resume
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 14 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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() ]
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.222, 5.15.163, 6.1.100 +3Red Hat: 4 advisoriesRed Hat: 14 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.3 and later | 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 3.3 and later Fixed in 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.3 to before 5.10.222; 5.11 to before 5.15.163; 5.16 to before 6.1.100; 6.2 to before 6.6.41; 6.7 to before 6.9.10 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.3 to before 5.10.222; 5.11 to before 5.15.163; 5.16 to before 6.1.100; 6.2 to before 6.6.41; 6.7 to before 6.9.10 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.222, 5.15.163, 6.1.100, 6.6.41, 6.9.10, 6.10
Red Hat 4 advisories
- RHSA-2024:10771 Released 2024-12-04 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.47.1.el9_4, libperf-5.14.0-427.47.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.47.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.47.1.el9_4, kernel-64k-devel-5.14.0-427.47.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.47.1.el9_4, kernel-5.14.0-427.47.1.el9_4, kernel-64k-5.14.0-427.47.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.47.1.el9_4, kernel-rt-core-5.14.0-427.47.1.el9_4, kernel-rt-debug-5.14.0-427.47.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.47.1.el9_4, kernel-rt-core-5.14.0-427.47.1.el9_4, kernel-rt-debug-5.14.0-427.47.1.el9_4 +11
- RHSA-2024:10274 Released 2024-11-26 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-503.15.1.el9_5, libperf-5.14.0-503.15.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.15.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.15.1.el9_5, kernel-64k-devel-5.14.0-503.15.1.el9_5 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.15.1.el9_5, kernel-5.14.0-503.15.1.el9_5, kernel-64k-5.14.0-503.15.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.15.1.el9_5, kernel-rt-core-5.14.0-503.15.1.el9_5, kernel-rt-debug-5.14.0-503.15.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.15.1.el9_5, kernel-rt-core-5.14.0-503.15.1.el9_5, kernel-rt-debug-5.14.0-503.15.1.el9_5 +11
- RHSA-2024:8856 Released 2024-11-05 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.27.1.el8_10, kernel-4.18.0-553.27.1.el8_10, kernel-abi-stablelists-4.18.0-553.27.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.27.1.el8_10
Show 1 more Red Hat advisories
- RHSA-2024:8870 Released 2024-11-05 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-core-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-debug-4.18.0-553.27.1.rt7.368.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-core-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-debug-4.18.0-553.27.1.rt7.368.el8_10 +7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:10274 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2024:10771 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:10274 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2024:10771 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:8856 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:10274 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2024:10771 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:8856 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:8870 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:8870 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:10274 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2024:10771 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:10274 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2024:10771 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-42244
- 2026-10-03 Alias added: GHSA-g9q3-4xq5-wqcj
References
Patch 6
- https://git.kernel.org/stable/c/932a86a711c722b45ed47ba2103adca34d225b33
- https://git.kernel.org/stable/c/b14aa5673e0a8077ff4b74f0bb260735e7d5e6a4
- https://git.kernel.org/stable/c/1094ed500987e67a9d18b0f95e1812f1cc720856
- https://git.kernel.org/stable/c/5ae6a64f18211851c8df6b4221381c438b9a7348
- https://git.kernel.org/stable/c/553e67dec846323b5575e78a776cf594c13f98c4
- https://git.kernel.org/stable/c/c15a688e49987385baa8804bf65d570e362f8576
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Sources
- CVE-2024-42244 · CVE Program
- CVE-2024-42244 · NVD
- FIRST EPSS
- GHSA-g9q3-4xq5-wqcj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-42244 · Red Hat security data · CC BY 4.0
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