kernel: a bug in ip_frag_reasm() can cause a crash in ip_do_fragment()
Published Sep 18, 2018
6.5
MEDIUMCVSS 3.0
EPSS 2.86%
Description
A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3 inclusive, which can cause a later system crash in ip_do_fragment(). With certain non-default, but non-rare, configuration of a victim host, an attacker can trigger this crash remotely, thus leading to a remote denial-of-service.
Affected products
-
- Version from 4.19-rc1 to 4.19-rc3 inclusiveStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Linux Foundation | Kernel | n/a |
|
- 4.19
- 4.19
- 4.19
No data.
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.el7a
Fixed · RHSA-2018:2948
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 Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.el7a | Fixed | RHSA-2018:2948 |
| 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 Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:M/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.86% (0.02861) | 86.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.86% (0.02861) | 84.88th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.49% (0.01486) | 79.28th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.43% (0.04428) | 81.35th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.24% (0.00241) | 62.48th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.24% (0.00241) | 62.34th | v3 (v2023.03.01) |
| May 7, 2024 | 0.34% (0.00342) | 71.36th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.36% (0.00359) | 71.38th | v3 (v2023.03.01) |
| Sep 12, 2023 | 0.36% (0.00359) | 68.73th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.31% (0.00308) | 65.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.26% (0.00255) | 61.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v1 |
| Jan 6, 2022 | 1.04% (0.01040) | 27.69th | v1 |
| Sep 1, 2021 | 1.04% (0.01040) | 64.49th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (8)
- https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-14641 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1629636 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641 x_refsource_CONFIRMIssue TrackingPatch
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4 x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-14641
- https://seclists.org/oss-sec/2018/q3/248 mailing-listx_refsource_MLISTExploitMailing ListPatchThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-14641
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2018:2948 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-14641 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1629636 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641 | x_refsource_CONFIRMIssue TrackingPatch | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d407b071dc369c26a38398326ee2be53651cfe4 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-14641 | ||
| https://seclists.org/oss-sec/2018/q3/248 | mailing-listx_refsource_MLISTExploitMailing ListPatchThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-14641 |
Change history (0)
No recorded changes yet.