nasm: Buffer over-read in function crc64ib in crc64.c resulting in denial of service
Published Jan 29, 2019
5.5
MEDIUMCVSS 3.0
EPSS 0.75%
Description
A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) 2.14rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.
Affected products
No data.
- 2.14
No data.
Red Hat Enterprise Linux 5
nasm
Not affected
Red Hat Enterprise Linux 6
nasm
Not affected
Red Hat Enterprise Linux 7
nasm
Not affected
Red Hat Enterprise Linux 8
nasm
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | nasm | Not affected | n/a |
| Red Hat Enterprise Linux 6 | nasm | Not affected | n/a |
| Red Hat Enterprise Linux 7 | nasm | Not affected | n/a |
| Red Hat Enterprise Linux 8 | nasm | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of nasm as shipped with Red Hat Enterprise Linux 5, 6, and 7.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AV:N/AC:M/Au:N/C:N/I:N/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.75% (0.00748) | 53.20th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.75% (0.00748) | 53.39th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00056) | 24.01th | v3 (v2023.03.01) |
| Jun 18, 2024 | 0.06% (0.00056) | 23.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00056) | 21.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (5)
- https://access.redhat.com/security/cve/CVE-2019-7147 Vendor Advisory
- https://bugzilla.nasm.us/show_bug.cgi?id=3392544 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1670704 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-7147
- https://www.cve.org/CVERecord?id=CVE-2019-7147
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-7147 | Vendor Advisory | |
| https://bugzilla.nasm.us/show_bug.cgi?id=3392544 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1670704 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-7147 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-7147 |
Change history (0)
No recorded changes yet.