Kernel: net: tcp: potential DoS via SYN+FIN messages
Published Feb 15, 2014
7.8
HIGHCVSS 2.0
EPSS 3.34%
Description
The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets, a different vulnerability than CVE-2012-2663.
Affected products
No data.
- < 3.0.38
- ≥ 3.1 · < 3.2.24
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-371.8.1.el5
Fixed · RHSA-2014:0433
Red Hat Enterprise Linux 5.9 Extended Update Support
kernel-0:2.6.18-348.27.1.el5
Fixed · RHSA-2014:0772
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-0:2.6.18-371.8.1.el5 | Fixed | RHSA-2014:0433 |
| Red Hat Enterprise Linux 5.9 Extended Update Support | kernel-0:2.6.18-348.27.1.el5 | Fixed | RHSA-2014:0772 |
| 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
This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 6 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:N/A:C
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.34% (0.03336) | 88.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.34% (0.03336) | 87.02th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.59% (0.00586) | 66.53th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.15% (0.02151) | 73.73th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.59% (0.00586) | 67.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.74% (0.00742) | 81.55th | v3 (v2023.03.01) |
| May 24, 2024 | 0.53% (0.00535) | 77.12th | v3 (v2023.03.01) |
| May 10, 2024 | 0.45% (0.00450) | 74.95th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.38% (0.00380) | 72.67th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.27% (0.00275) | 67.35th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.25% (0.00249) | 63.85th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.74% (0.00742) | 78.68th | v3 (v2023.03.01) |
| May 8, 2023 | 0.65% (0.00645) | 76.22th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00565) | 74.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fdf5af0daf8019cec2396cdef8fb042d80fe71fa x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24 x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2012-6638 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1066055 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=826702 x_refsource_MISCIssue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/fdf5af0daf8019cec2396cdef8fb042d80fe71fa x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2012-6638
- https://www.cve.org/CVERecord?id=CVE-2012-6638
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fdf5af0daf8019cec2396cdef8fb042d80fe71fa | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24 | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2012-6638 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1066055 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=826702 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://github.com/torvalds/linux/commit/fdf5af0daf8019cec2396cdef8fb042d80fe71fa | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-6638 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-6638 |
Change history (0)
No recorded changes yet.