kernel: NULL pointer dereference in hfs_ext_read_extent in hfs.ko
Published Jun 28, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.43%
Description
In the Linux kernel 4.15.0, a NULL pointer dereference was discovered in hfs_ext_read_extent in hfs.ko. This can occur during a mount of a crafted hfs filesystem.
Affected products
No data.
Configuration 1
- 4.15
Configuration 2
- 16.04.4
No data.
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Will not fix | 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-alt | 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 | realtime-kernel | 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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
AV:L/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.43% (0.00427) | 34.64th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.43% (0.00427) | 36.58th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.05% (0.00052) | 21.27th | v3 (v2023.03.01) |
| Jun 1, 2024 | 0.05% (0.00052) | 20.51th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.05% (0.00052) | 18.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.60th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (7)
- http://www.securityfocus.com/bid/104593 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-12928 Vendor Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763384 x_refsource_MISCIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1597826 Issue Tracking
- https://marc.info/?l=linux-fsdevel&m=152407263325766&w=2 x_refsource_MISCMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-12928
- https://www.cve.org/CVERecord?id=CVE-2018-12928
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104593 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-12928 | Vendor Advisory | |
| https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763384 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1597826 | Issue Tracking | |
| https://marc.info/?l=linux-fsdevel&m=152407263325766&w=2 | x_refsource_MISCMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-12928 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-12928 |
Change history (0)
No recorded changes yet.