kernel: randomness degradation due to bug in net_get_random_once()
Published Oct 13, 2014
6.4
MEDIUMCVSS 2.0
EPSS 3.75%
Description
The net_get_random_once implementation in net/core/utils.c in the Linux kernel 3.13.x and 3.14.x before 3.14.5 on certain Intel processors does not perform the intended slow-path operation to initialize random seeds, which makes it easier for remote attackers to spoof or disrupt IP communication by leveraging the predictability of TCP sequence numbers, TCP and UDP port numbers, and IP ID values.
Affected products
No data.
- 3.13.1
- 3.13.2
- 3.13.3
- 3.13.4
- 3.13.5
- 3.13.6
- 3.13.7
- 3.13.8
- 3.13.9
- 3.13.10
- 3.13.11
- 3.14.1
- 3.14.2
- 3.14.3
- 3.14.4
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.75% (0.03751) | 89.53th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.75% (0.03751) | 88.43th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.01% (0.01011) | 75.08th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.05% (0.03048) | 77.74th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.01% (0.01011) | 75.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.47% (0.02472) | 90.45th | v3 (v2023.03.01) |
| May 25, 2024 | 2.47% (0.02472) | 90.06th | v3 (v2023.03.01) |
| Apr 8, 2024 | 2.68% (0.02677) | 90.23th | v3 (v2023.03.01) |
| Nov 8, 2023 | 2.88% (0.02883) | 89.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.67% (0.03671) | 90.29th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (9)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3d4405226d27b3a215e4d03cfa51f536244e5de7 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.5 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2014/10/01/19 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2014-7284 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1148788 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/3d4405226d27b3a215e4d03cfa51f536244e5de7 x_refsource_CONFIRMExploit
- https://nvd.nist.gov/vuln/detail/CVE-2014-7284
- https://web.archive.org/web/20141002163852/http://secondlookforensics.com/ngro-linux-kernel-bug/ x_refsource_MISCExploit
- https://www.cve.org/CVERecord?id=CVE-2014-7284
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3d4405226d27b3a215e4d03cfa51f536244e5de7 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.5 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2014/10/01/19 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2014-7284 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1148788 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/3d4405226d27b3a215e4d03cfa51f536244e5de7 | x_refsource_CONFIRMExploit | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-7284 | ||
| https://web.archive.org/web/20141002163852/http://secondlookforensics.com/ngro-linux-kernel-bug/ | x_refsource_MISCExploit | |
| https://www.cve.org/CVERecord?id=CVE-2014-7284 |
Change history (0)
No recorded changes yet.