Heap-based buffer overflow in Red Hat kernel
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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-122 and the CVSS impact.
Summary
A heap-based buffer overflow vulnerability was found in the Linux kernel, version kernel-2.6.32, in Marvell WiFi chip driver. A remote attacker could cause a denial of service (system crash) or, possibly execute arbitrary code, when the lbs_ibss_join_existing function is called after a STA connects to an AP.
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 |
|---|---|---|---|---|---|
| Red Hat | kernel | kernel-2.6.32 | — | No fix listed | CNA |
- kernel VendorRed Hat Affected kernel-2.6.32 Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.32 to before 3.16.83; 3.17 to before 4.4.212; 4.5 to before 4.9.212; 4.10 to before 4.14.169; 4.15 to before 4.19.100; 4.20 to before 5.4.16 | Vulnerable | Linux |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 31 | Vulnerable | Fedoraproject |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 19.10 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.32 to before 3.16.83; 3.17 to before 4.4.212; 4.5 to before 4.9.212; 4.10 to before 4.14.169; 4.15 to before 4.19.100; 4.20 to before 5.4.16 Vulnerable ·Linux
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
Remediation
Red Hat 1 advisory
- RHSA-2020:3548 Released 2020-08-25 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
- Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-754.33.1.el6
- Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
- Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-754.33.1.el6
- Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-bootwrapper-2.6.32-754.33.1.el6 +9
- Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-754.33.1.el6
- Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-754.33.1.el6, kernel-abi-whitelists-2.6.32-754.33.1.el6, kernel-debug-2.6.32-754.33.1.el6 +6
- Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-754.33.1.el6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2020:3548 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2020:3548 |
Not affected: 4 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2019-14896
- 2026-10-03 Alias added: GHSA-93c5-v3v3-mpq3
- 2026-10-09 EPSS moved to the 95th–99th percentile
References
Advisory 16
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14896
- FEDORA-2019-91f6e7bb71
- FEDORA-2019-8846a1a5a2
- https://security.netapp.com/advisory/ntap-20200103-0001/
- USN-4228-1
- USN-4227-1
- USN-4226-1
- USN-4225-1
- USN-4228-2
- USN-4227-2
- http://packetstormsecurity.com/files/155879/Kernel-Live-Patch-Security-Notice-LSN-0061-1.html
- [debian-lts-announce] 20200118 [SECURITY] [DLA 2068-1] linux security update
- USN-4225-2
- http://packetstormsecurity.com/files/156185/Kernel-Live-Patch-Security-Notice-LSN-0062-1.html
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security update
- openSUSE-SU-2020:0336
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Sources
- CVE-2019-14896 · CVE Program
- CVE-2019-14896 · NVD
- FIRST EPSS
- GHSA-93c5-v3v3-mpq3 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-14896 · Red Hat security data · CC BY 4.0
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