Memory leak in the __key_link_end function in security/keys/keyring.c in the Linux kernel…
Priority LOW 23CWE-119Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- 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-119 and the CVSS impact.
Summary
Memory leak in the __key_link_end function in security/keys/keyring.c in the Linux kernel before 4.1.4 allows local users to cause a denial of service (memory consumption) via many add_key system calls that refer to existing keys.
Why it matters now
EPSS 0.0048 41st percentileScored 2026-11-07
Fix Fixed Red Hat: 3 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
Remediation
Red Hat 3 advisories
- RHSA-2015:1778 Released 2015-09-15 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-229.14.1.el7, kernel-abi-whitelists-3.10.0-229.14.1.el7, kernel-debug-3.10.0-229.14.1.el7 +7
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-229.14.1.el7, python-perf-3.10.0-229.14.1.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-229.14.1.el7, kernel-abi-whitelists-3.10.0-229.14.1.el7, kernel-debug-3.10.0-229.14.1.el7 +7
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-229.14.1.el7, python-perf-3.10.0-229.14.1.el7
- Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-229.14.1.ael7b, kernel-3.10.0-229.14.1.el7, kernel-abi-whitelists-3.10.0-229.14.1.ael7b +20
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-229.14.1.ael7b, kernel-tools-libs-devel-3.10.0-229.14.1.ael7b, kernel-tools-libs-devel-3.10.0-229.14.1.el7 +2
- Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-229.14.1.el7, kernel-abi-whitelists-3.10.0-229.14.1.el7, kernel-debug-3.10.0-229.14.1.el7 +7
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-229.14.1.el7, python-perf-3.10.0-229.14.1.el7
- RHSA-2015:1788 Released 2015-09-15 · Red Hat rating Importantkernel-rt security, bug fix, and enhancement update
- Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-229.14.1.rt56.141.13.el7_1, kernel-rt-debug-3.10.0-229.14.1.rt56.141.13.el7_1, kernel-rt-debug-devel-3.10.0-229.14.1.rt56.141.13.el7_1 +4
- RHSA-2015:1787 Released 2015-09-15 · Red Hat rating Importantkernel-rt security, bug fix, and enhancement update
- Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-229.rt56.161.el6rt, kernel-rt-debug-1:3.10.0-229.rt56.161.el6rt, kernel-rt-debug-devel-1:3.10.0-229.rt56.161.el6rt +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux Realtime (v. 7) | Fixed | RHSA-2015:1788 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2015:1778 |
| Red Hat MRG Realtime for RHEL 6 Server v.2 | Fixed | RHSA-2015:1787 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-1333
- 2026-10-03 Alias added: GHSA-wwgx-5rpw-xwxw
References
Advisory 9
Other 6
- https://github.com/torvalds/linux/commit/ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- https://bugzilla.redhat.com/show_bug.cgi?id=1245658
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- [oss-security] 20150727 Security issue in Linux Kernel Keyring (CVE-2015-1333)
- https://support.f5.com/csp/article/K05211147
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Sources
- CVE-2015-1333 · CVE Program
- CVE-2015-1333 · NVD
- FIRST EPSS
- GHSA-wwgx-5rpw-xwxw · GitHub Advisory Database · CC BY 4.0
- CVE-2015-1333 · Red Hat security data · CC BY 4.0
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