Off-by-one error in the iov_iter_advance function in mm/filemap.c in the Linux kernel…
Priority LOW 23CWE-193Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-193 and the CVSS impact.
Summary
Off-by-one error in the iov_iter_advance function in mm/filemap.c in the Linux kernel before 2.6.27-rc2 allows local users to cause a denial of service (system crash) via a certain sequence of file I/O operations with readv and writev, as demonstrated by testcases/kernel/fs/ftest/ftest03 from the Linux Test Project.
Why it matters now
EPSS 0.00532 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory
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 2.6.27 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.27:-:*:*:*:*:*:* | 2.6.27 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.27:rc1:*:*:*:*:*:* | 2.6.27 rc1 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* | 6.06 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:* | 7.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* | 8.04 | Vulnerable | Canonical |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 2.6.27 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.27:-:*:*:*:*:*:* Versions 2.6.27 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.27:rc1:*:*:*:*:*:* Versions 2.6.27 rc1 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* Versions 6.06 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:* Versions 7.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* Versions 8.04 Vulnerable ·Canonical
Remediation
Red Hat 1 advisory
- RHSA-2008:0857 Released 2008-10-07 · Red Hat rating Importantkernel security and bug fix update
- MRG Realtime for RHEL 5 Server kernel-rt-2.6.24.7-81.el5rt, kernel-rt-debug-2.6.24.7-81.el5rt, kernel-rt-debug-devel-2.6.24.7-81.el5rt +6
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-2008:0857 |
Timeline
- 2026-10-02 Threatist record created from CVE-2008-3535
- 2026-10-03 Alias added: GHSA-jcg4-g8qf-7xgh
References
Sources
- CVE-2008-3535 · CVE Program
- CVE-2008-3535 · NVD
- FIRST EPSS
- GHSA-jcg4-g8qf-7xgh · GitHub Advisory Database · CC BY 4.0
- CVE-2008-3535 · Red Hat security data · CC BY 4.0
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