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TI-2017-06333 Aliases CVE-2017-8824GHSA-q4r2-vpw8-hwg5

Use after free in Linux kernel through 4.14.3

Priority LOW 37CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.

Why it matters now

EPSS 0.01344 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed Red Hat: 8 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux kernel through 4.14.3Linux kernel through 4.14.3—No fix listedCNA
  • Linux kernel through 4.14.3 Vendor— Affected Linux kernel through 4.14.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.14 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.95; 3.19 to before 4.1.50; 4.2 to before 4.4.116; 4.5 to before 4.9.82; 4.10 to before 4.14.20VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.14 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.95; 3.19 to before 4.1.50; 4.2 to before 4.4.116; 4.5 to before 4.9.82; 4.10 to before 4.14.20 Vulnerable ·Linux

Remediation

Red Hat 8 advisories

  • RHSA-2018:3822 Released 2018-12-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server (v. 5 ELS) kernel-2.6.18-436.el5, kernel-PAE-2.6.18-436.el5, kernel-PAE-devel-2.6.18-436.el5 +10
  • RHSA-2018:1319 Released 2018-05-08 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-696.28.1.el6, kernel-abi-whitelists-2.6.32-696.28.1.el6, kernel-debug-2.6.32-696.28.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-696.28.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-696.28.1.el6, kernel-abi-whitelists-2.6.32-696.28.1.el6, kernel-debug-2.6.32-696.28.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-696.28.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-696.28.1.el6, kernel-abi-whitelists-2.6.32-696.28.1.el6, kernel-bootwrapper-2.6.32-696.28.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-696.28.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-696.28.1.el6, kernel-abi-whitelists-2.6.32-696.28.1.el6, kernel-debug-2.6.32-696.28.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-696.28.1.el6
  • RHSA-2018:1216 Released 2018-04-24 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.2) kernel-3.10.0-327.66.1.el7, kernel-abi-whitelists-3.10.0-327.66.1.el7, kernel-debug-3.10.0-327.66.1.el7 +8
    • Red Hat Enterprise Linux Server E4S (v. 7.2) kernel-3.10.0-327.66.1.el7, kernel-abi-whitelists-3.10.0-327.66.1.el7, kernel-debug-3.10.0-327.66.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-tools-libs-devel-3.10.0-327.66.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.2) kernel-tools-libs-devel-3.10.0-327.66.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.2) kernel-tools-libs-devel-3.10.0-327.66.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.2) kernel-3.10.0-327.66.1.el7, kernel-abi-whitelists-3.10.0-327.66.1.el7, kernel-debug-3.10.0-327.66.1.el7 +8
Show 5 more Red Hat advisories
  • RHSA-2018:1130 Released 2018-04-17 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) kernel-3.10.0-693.25.2.el7, kernel-abi-whitelists-3.10.0-693.25.2.el7, kernel-debug-3.10.0-693.25.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.25.2.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.4) kernel-3.10.0-693.25.2.el7, kernel-abi-whitelists-3.10.0-693.25.2.el7, kernel-bootwrapper-3.10.0-693.25.2.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debug-devel-3.10.0-693.25.2.el7, kernel-tools-libs-devel-3.10.0-693.25.2.el7
  • RHSA-2018:1170 Released 2018-04-17 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debug-1:3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debug-devel-1:3.10.0-693.25.2.rt56.612.el6rt +7
  • RHSA-2018:1062 Released 2018-04-10 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-bootwrapper-3.10.0-862.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-862.el7, kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
  • RHSA-2018:0676 Released 2018-04-10 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-862.rt56.804.el7, kernel-rt-debug-3.10.0-862.rt56.804.el7, kernel-rt-debug-devel-3.10.0-862.rt56.804.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-862.rt56.804.el7, kernel-rt-debug-3.10.0-862.rt56.804.el7, kernel-rt-debug-devel-3.10.0-862.rt56.804.el7 +7
  • RHSA-2018:0399 Released 2018-03-06 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) kernel-3.10.0-514.44.1.el7, kernel-abi-whitelists-3.10.0-514.44.1.el7, kernel-debug-3.10.0-514.44.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.44.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.3) kernel-3.10.0-514.44.1.el7, kernel-abi-whitelists-3.10.0-514.44.1.el7, kernel-bootwrapper-3.10.0-514.44.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) kernel-debug-devel-3.10.0-514.44.1.el7, kernel-tools-libs-devel-3.10.0-514.44.1.el7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode EUS (v. 7.3)Fixed RHSA-2018:0399
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3)Fixed RHSA-2018:0399
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Server (v. 5 ELS)Fixed RHSA-2018:3822
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server AUS (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Server E4S (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2018:0399
Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server Optional AUS (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Server Optional E4S (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Server Optional EUS (v. 7.3)Fixed RHSA-2018:0399
Red Hat Enterprise Linux Server Optional EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Server Optional TUS (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Server TUS (v. 7.2)Fixed RHSA-2018:1216
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2018:1319
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2018:0676
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:0676
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2018:1170
Not affected: 1 product
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-8824
  2. 2026-10-03 Alias added: GHSA-q4r2-vpw8-hwg5

References

Exploit 1

Advisory 22

  • 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
See all 15278 →

Sources

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