kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and…
Priority LOW 18Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · Partial
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and pid of a signal sender via a sigqueueinfo system call.
Why it matters now
EPSS 0.00485 42nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 3 advisoriesRed Hat: 3 fixed, 1 without a fix
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 2.6.39 | Vulnerable | Linux |
| cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_aus:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 2.6.39 Vulnerable ·Linux
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_aus:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
Remediation
Red Hat 3 advisories
- RHSA-2011:1189 Released 2011-08-23 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-131.12.1.el6, kernel-bootwrapper-2.6.32-131.12.1.el6, kernel-debug-2.6.32-131.12.1.el6 +8
- RHSA-2011:0927 Released 2011-07-15 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux (v. 5.6.z server) kernel-2.6.18-238.19.1.el5, kernel-2.6.18-238.19.1.el5.ia64, kernel-PAE-2.6.18-238.19.1.el5 +14
- RHSA-2011:0883 Released 2011-06-21 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Server EUS (v. 6.0) kernel-2.6.32-71.31.1.el6, kernel-bootwrapper-2.6.32-71.31.1.el6, kernel-debug-2.6.32-71.31.1.el6 +8
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise MRG 1 | Affected | No fix yet |
| Red Hat Enterprise Linux (v. 5.6.z server) | Fixed | RHSA-2011:0927 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:1189 |
| Red Hat Enterprise Linux Server EUS (v. 6.0) | Fixed | RHSA-2011:0883 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-1182
- 2026-10-03 Alias added: GHSA-r2p8-xfjx-qrfg
References
Advisory 4
Sources
- CVE-2011-1182 · CVE Program
- CVE-2011-1182 · NVD
- FIRST EPSS
- GHSA-r2p8-xfjx-qrfg · GitHub Advisory Database · CC BY 4.0
- CVE-2011-1182 · Red Hat security data · CC BY 4.0
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