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TI-2015-03494 Aliases CVE-2015-4170GHSA-mqxq-v3w5-xvj4

Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux…

Priority LOW 22CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 13 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.

Why it matters now

EPSS 0.00326 25th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 13 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 3.13.3VulnerableLinux
cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.1:*:*:*:*:*:*:*7.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.1_s390x:*:*:*:*:*:*:*7.1_s390xVulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.1_ppc64:*:*:*:*:*:*:*7.1_ppc64VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.1_ppc64le:*:*:*:*:*:*:*7.1_ppc64leVulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*7.1VulnerableRed Hat
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 3.13.3 Vulnerable ·Linux
  • cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.1_s390x:*:*:*:*:*:*:* Versions 7.1_s390x Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.1_ppc64:*:*:*:*:*:*:* Versions 7.1_ppc64 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.1_ppc64le:*:*:*:*:*:*:* Versions 7.1_ppc64le Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2016:1395 Released 2016-07-12 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) kernel-3.10.0-229.38.1.el7, kernel-abi-whitelists-3.10.0-229.38.1.el7, kernel-debug-3.10.0-229.38.1.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) kernel-tools-libs-devel-3.10.0-229.38.1.el7, python-perf-3.10.0-229.38.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.1) kernel-3.10.0-229.38.1.ael7b, kernel-3.10.0-229.38.1.el7, kernel-abi-whitelists-3.10.0-229.38.1.ael7b +20
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.1) kernel-debug-devel-3.10.0-229.38.1.ael7b, kernel-tools-libs-devel-3.10.0-229.38.1.ael7b, kernel-tools-libs-devel-3.10.0-229.38.1.el7 +2
  • RHSA-2015:2152 Released 2015-11-19 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-bootwrapper-3.10.0-327.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-327.el7, kernel-tools-libs-devel-3.10.0-327.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
  • RHSA-2015:2411 Released 2015-11-19 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-327.rt56.204.el7, kernel-rt-debug-3.10.0-327.rt56.204.el7, kernel-rt-debug-devel-3.10.0-327.rt56.204.el7 +4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise MRG 2AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux ComputeNode EUS (v. 7.1)Fixed RHSA-2016:1395
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1)Fixed RHSA-2016:1395
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux Server EUS (v. 7.1)Fixed RHSA-2016:1395
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux Server Optional EUS (v. 7.1)Fixed RHSA-2016:1395
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2015:2152
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2015:2411
Not affected: 4 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-4170
  2. 2026-10-03 Alias added: GHSA-mqxq-v3w5-xvj4

References

Patch 1

Advisory 2

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences