Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel…
Priority LOW 20CWE-362Published · 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
Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted application.
Why it matters now
EPSS 0.00541 45th 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
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | up to 2.6.39.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:*:*:*:*:*:*:* | 2.6.39 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc1:*:*:*:*:*:* | 2.6.39 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc2:*:*:*:*:*:* | 2.6.39 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc3:*:*:*:*:*:* | 2.6.39 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc4:*:*:*:*:*:* | 2.6.39 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc5:*:*:*:*:*:* | 2.6.39 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc6:*:*:*:*:*:* | 2.6.39 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39:rc7:*:*:*:*:*:* | 2.6.39 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.39.1:*:*:*:*:*:*:* | 2.6.39.1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 2.6.39.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:*:*:*:*:*:*:* Versions 2.6.39 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc1:*:*:*:*:*:* Versions 2.6.39 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc2:*:*:*:*:*:* Versions 2.6.39 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc3:*:*:*:*:*:* Versions 2.6.39 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc4:*:*:*:*:*:* Versions 2.6.39 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc5:*:*:*:*:*:* Versions 2.6.39 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc6:*:*:*:*:*:* Versions 2.6.39 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39:rc7:*:*:*:*:*:* Versions 2.6.39 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.39.1:*:*:*:*:*:*:* Versions 2.6.39.1 Vulnerable ·Linux
Remediation
Red Hat 2 advisories
- RHSA-2011:1253 Released 2011-09-12 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-2.6.33.9-rt31.75.el6rt, kernel-rt-debug-2.6.33.9-rt31.75.el6rt, kernel-rt-debug-devel-2.6.33.9-rt31.75.el6rt +7
- 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
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:1189 |
| Red Hat MRG Realtime for RHEL 6 Server v.2 | Fixed | RHSA-2011:1253 |
Not affected: 2 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2183
- 2026-10-03 Alias added: GHSA-cx72-f838-ppm8
References
Other 4
- [oss-security] 20110606 Re: CVE request: kernel: ksm: race between ksmd and exiting task
- https://bugzilla.redhat.com/show_bug.cgi?id=710338
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b472611a32a72f4a118c069c2d62a1a3f087afd
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.3
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- 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-2011-2183 · CVE Program
- CVE-2011-2183 · NVD
- FIRST EPSS
- GHSA-cx72-f838-ppm8 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2183 · Red Hat security data · CC BY 4.0
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