The compat_sys_mount function in fs/compat.c in Linux kernel 2.6.20 and earlier allows…
Priority LOW 19Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The compat_sys_mount function in fs/compat.c in Linux kernel 2.6.20 and earlier allows local users to cause a denial of service (NULL pointer dereference and oops) by mounting a smbfs file system in compatibility mode ("mount -t smbfs").
Why it matters now
EPSS 0.00479 41st percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
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
Remediation
Red Hat 2 advisories
- RHSA-2007:0488 Released 2007-06-25 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AS version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-2.6.9-55.0.2.EL.ppc64iseries +14
- Red Hat Enterprise Linux Desktop version 4 kernel-2.6.9-55.0.2.EL, kernel-devel-2.6.9-55.0.2.EL, kernel-doc-2.6.9-55.0.2.EL +8
- Red Hat Enterprise Linux ES version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-devel-2.6.9-55.0.2.EL +12
- Red Hat Enterprise Linux WS version 4 kernel-2.6.9-55.0.2.EL, kernel-2.6.9-55.0.2.EL.ia64, kernel-devel-2.6.9-55.0.2.EL +12
- RHSA-2007:0376 Released 2007-06-14 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-8.1.6.el5, kernel-2.6.18-8.1.6.el5.ia64, kernel-PAE-2.6.18-8.1.6.el5 +14
- Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-8.1.6.el5, kernel-PAE-2.6.18-8.1.6.el5, kernel-PAE-devel-2.6.18-8.1.6.el5 +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2007:0376 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2007:0376 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2007:0488 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2007:0488 |
Timeline
- 2026-10-02 Threatist record created from CVE-2006-7203
- 2026-10-03 Alias added: GHSA-wxqc-7fg4-9cvw
References
Advisory 9
More Linux Kernel vulnerabilities
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2006-7203 · CVE Program
- CVE-2006-7203 · NVD
- FIRST EPSS
- GHSA-wxqc-7fg4-9cvw · GitHub Advisory Database · CC BY 4.0
- CVE-2006-7203 · 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