kernel: NULL pointer dereference in fs/hfsplus/dir.c:hfsplus_lookup() when operating on a file in a crafted hfs+ image
Published Jul 27, 2018
5.5
MEDIUMCVSS 3.0
EPSS 2.54%
Description
An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
Affected products
No data.
Configuration 1
- ≤ 4.17.10
Configuration 2
- 8.0
- 9.0
Configuration 3
- 14.04
- 16.04
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
Red Hat mitigation
If the HFS+ filesystem is not in use, this module can be blacklisted and prevented from being loaded. See https://access.redhat.com/solutions/41278 for instructions on how to blacklist the 'hfsplus.ko' kernel module.
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
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/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 v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.54% (0.02544) | 84.43th | v5 (v2026.06.15) |
| Sep 22, 2026 | 2.54% (0.02544) | 84.30th | v5 (v2026.06.15) |
| Sep 21, 2026 | 5.00% (0.04997) | 91.89th | v5 (v2026.06.15) |
| Sep 6, 2026 | 2.54% (0.02544) | 83.95th | v5 (v2026.06.15) |
| Sep 5, 2026 | 5.00% (0.04997) | 91.71th | v5 (v2026.06.15) |
| Aug 30, 2026 | 2.54% (0.02544) | 83.86th | v5 (v2026.06.15) |
| Aug 28, 2026 | 5.00% (0.04997) | 91.66th | v5 (v2026.06.15) |
| Aug 24, 2026 | 2.54% (0.02544) | 83.78th | v5 (v2026.06.15) |
| Aug 23, 2026 | 5.00% (0.04997) | 91.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.52% (0.02523) | 82.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.26% (0.00263) | 47.73th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00096) | 41.96th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.09% (0.00094) | 38.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00079) | 32.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
References (13)
- http://www.securityfocus.com/bid/104917 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-14617 Vendor Advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=200297 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1610110 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-14617
- https://usn.ubuntu.com/3821-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3821-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4094-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4118-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-14617
- https://www.debian.org/security/2018/dsa-4308 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.spinics.net/lists/linux-fsdevel/msg130021.html x_refsource_MISCIssue TrackingPatchThird Party Advisory
Change history (0)
No recorded changes yet.