The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 2.6.37-rc7…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- 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-400.
Summary
The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 2.6.37-rc7 allows local users to cause a denial of service (panic) via a zero-length I/O request in a device ioctl to a SCSI device, related to an unaligned map. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4163.
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 · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 2.6.37 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:-:*:*:*:*:*:* | 2.6.37 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc1:*:*:*:*:*:* | 2.6.37 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc2:*:*:*:*:*:* | 2.6.37 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc3:*:*:*:*:*:* | 2.6.37 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc4:*:*:*:*:*:* | 2.6.37 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc5:*:*:*:*:*:* | 2.6.37 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.37:rc6:*:*:*:*:*:* | 2.6.37 rc6 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 2.6.37 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:-:*:*:*:*:*:* Versions 2.6.37 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc1:*:*:*:*:*:* Versions 2.6.37 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc2:*:*:*:*:*:* Versions 2.6.37 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc3:*:*:*:*:*:* Versions 2.6.37 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc4:*:*:*:*:*:* Versions 2.6.37 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc5:*:*:*:*:*:* Versions 2.6.37 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.37:rc6:*:*:*:*:*:* Versions 2.6.37 rc6 Vulnerable ·Linux
Remediation
Red Hat 2 advisories
- RHSA-2011:0330 Released 2011-03-10 · Red Hat rating Importantkernel-rt security and bug fix update
- MRG Realtime for RHEL 5 Server kernel-rt-2.6.33.7-rt29.55.el5rt, kernel-rt-debug-2.6.33.7-rt29.55.el5rt, kernel-rt-debug-devel-2.6.33.7-rt29.55.el5rt +7
- RHSA-2011:0007 Released 2011-01-11 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-71.14.1.el6, kernel-bootwrapper-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6 +8
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-71.14.1.el6, kernel-debug-2.6.32-71.14.1.el6, kernel-debug-devel-2.6.32-71.14.1.el6 +5
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| MRG Realtime for RHEL 5 Server | Fixed | RHSA-2011:0330 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:0007 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2011:0007 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-4668
- 2026-10-03 Alias added: GHSA-rpp2-qjhg-737g
References
Patch 5
- [oss-security] 20101130 Re: CVE request: kernel: Multiple DoS issues in block layer
- [oss-security] 20101130 Re: CVE request: kernel: Multiple DoS issues in block layer
- [oss-security] 20101129 Re: CVE request: kernel: Multiple DoS issues in block layer
- [linux-kernel] 20101129 [PATCH] block: check for proper length of iov entries earlier in blk_rq_map_user_iov()
- https://patchwork.kernel.org/patch/363282/
Advisory 2
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-2010-4668 · CVE Program
- CVE-2010-4668 · NVD
- FIRST EPSS
- GHSA-rpp2-qjhg-737g · GitHub Advisory Database · CC BY 4.0
- CVE-2010-4668 · 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