The USB subsystem in the Linux kernel before 2.6.36-rc5 does not properly initialize…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.
Summary
The USB subsystem in the Linux kernel before 2.6.36-rc5 does not properly initialize certain structure members, which allows local users to obtain potentially sensitive information from kernel stack memory via vectors related to TIOCGICOUNT ioctl calls, and the (1) mos7720_ioctl function in drivers/usb/serial/mos7720.c and (2) mos7840_ioctl function in drivers/usb/serial/mos7840.c.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 2.6.36 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.36:-:*:*:*:*:*:* | 2.6.36 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.36:rc1:*:*:*:*:*:* | 2.6.36 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.36:rc2:*:*:*:*:*:* | 2.6.36 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.36:rc3:*:*:*:*:*:* | 2.6.36 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.36:rc4:*:*:*:*:*:* | 2.6.36 rc4 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 2.6.36 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.36:-:*:*:*:*:*:* Versions 2.6.36 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.36:rc1:*:*:*:*:*:* Versions 2.6.36 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.36:rc2:*:*:*:*:*:* Versions 2.6.36 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.36:rc3:*:*:*:*:*:* Versions 2.6.36 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.36:rc4:*:*:*:*:*:* Versions 2.6.36 rc4 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian
Remediation
Red Hat 2 advisories
- RHSA-2011:0007 Released 2011-01-11 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-71.14.1.el6, kernel-bootwrapper-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6 +8
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
- RHSA-2010:0958 Released 2010-12-08 · Red Hat rating Importantkernel-rt security and bug fix update
- MRG Realtime for RHEL 5 Server kernel-rt-2.6.33.7-rt29.47.el5rt, kernel-rt-debug-2.6.33.7-rt29.47.el5rt, kernel-rt-debug-devel-2.6.33.7-rt29.47.el5rt +7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| MRG Realtime for RHEL 5 Server | Fixed | RHSA-2010:0958 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2011:0007 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-4074
- 2026-10-03 Alias added: GHSA-fjxv-x673-382q
References
Patch 5
- [oss-security] 20100925 CVE request: multiple kernel stack memory disclosures
- https://bugzilla.redhat.com/show_bug.cgi?id=648659
- [linux-kernel] 20100915 [PATCH] drivers/usb/serial/mos*: prevent reading uninitialized stack memory
- [oss-security] 20101006 Re: CVE request: multiple kernel stack memory disclosures
- [oss-security] 20101025 Re: CVE request: multiple kernel stack memory disclosures
Advisory 4
Sources
- CVE-2010-4074 · CVE Program
- CVE-2010-4074 · NVD
- FIRST EPSS
- GHSA-fjxv-x673-382q · GitHub Advisory Database · CC BY 4.0
- CVE-2010-4074 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences