The __secure_computing function in kernel/seccomp.c in the seccomp subsystem in the Linux…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-264.
Summary
The __secure_computing function in kernel/seccomp.c in the seccomp subsystem in the Linux kernel 2.6.28.7 and earlier on the x86_64 platform, when CONFIG_SECCOMP is enabled, does not properly handle (1) a 32-bit process making a 64-bit syscall or (2) a 64-bit process making a 32-bit syscall, which allows local users to bypass intended access restrictions via crafted syscalls that are misinterpreted as (a) stat or (b) chmod, a related issue to CVE-2009-0342 and CVE-2009-0343.
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 · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:2.6.25:*:x86_64:*:*:*:*:* | 2.6.25 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.1:*:x86_64:*:*:*:*:* | 2.6.25.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.2:*:x86_64:*:*:*:*:* | 2.6.25.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.3:*:x86_64:*:*:*:*:* | 2.6.25.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.4:*:x86_64:*:*:*:*:* | 2.6.25.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.5:*:x86_64:*:*:*:*:* | 2.6.25.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.6:*:x86_64:*:*:*:*:* | 2.6.25.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.7:*:x86_64:*:*:*:*:* | 2.6.25.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.8:*:x86_64:*:*:*:*:* | 2.6.25.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.25.9:*:x86_64:*:*:*:*:* | 2.6.25.9 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:2.6.25:*:x86_64:*:*:*:*:* Versions 2.6.25 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.1:*:x86_64:*:*:*:*:* Versions 2.6.25.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.2:*:x86_64:*:*:*:*:* Versions 2.6.25.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.3:*:x86_64:*:*:*:*:* Versions 2.6.25.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.4:*:x86_64:*:*:*:*:* Versions 2.6.25.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.5:*:x86_64:*:*:*:*:* Versions 2.6.25.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.6:*:x86_64:*:*:*:*:* Versions 2.6.25.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.7:*:x86_64:*:*:*:*:* Versions 2.6.25.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.8:*:x86_64:*:*:*:*:* Versions 2.6.25.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.25.9:*:x86_64:*:*:*:*:* Versions 2.6.25.9 Vulnerable ·Linux
Remediation
Red Hat 1 advisory
- RHSA-2009:0451 Released 2009-04-29 · Red Hat rating Importantkernel-rt security and bug fix update
- MRG Realtime for RHEL 5 Server kernel-rt-2.6.24.7-111.el5rt, kernel-rt-debug-2.6.24.7-111.el5rt, kernel-rt-debug-devel-2.6.24.7-111.el5rt +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| MRG Realtime for RHEL 5 Server | Fixed | RHSA-2009:0451 |
Timeline
- 2026-10-02 Threatist record created from CVE-2009-0835
- 2026-10-03 Alias added: GHSA-x75x-89gj-wfcm
References
Exploit 3
Advisory 8
Other 5
- http://scarybeastsecurity.blogspot.com/2009/02/linux-kernel-minor-seccomp.html
- [oss-security] 20090302 CVE request: kernel: x86-64: seccomp: 32/64 syscall hole
- [linux-kernel] 20090227 Re: [PATCH 2/2] x86-64: seccomp: fix 32/64 syscall hole
- [linux-kernel] 20090228 [PATCH 0/2] x86-64: 32/64 syscall arch holes
- http://scary.beasts.org/security/CESA-2009-004.html
More Linux Kernel vulnerabilities
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- 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-2009-0835 · CVE Program
- CVE-2009-0835 · NVD
- FIRST EPSS
- GHSA-x75x-89gj-wfcm · GitHub Advisory Database · CC BY 4.0
- CVE-2009-0835 · 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