kernel: Incorrect integer signedness in sbuslibc:sbusfb_ioctl_helper() allows for information leakage
Published Jan 31, 2018
7.5
HIGHCVSS 3.0
EPSS 2.33%
Description
In the function sbusfb_ioctl_helper() in drivers/video/fbdev/sbuslib.c in the Linux kernel through 4.15, an integer signedness error allows arbitrary information leakage for the FBIOPUTCMAP_SPARC and FBIOGETCMAP_SPARC commands.
Affected products
No data.
- ≤ 4.15
No data.
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-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 | 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-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 statement
This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE, as the code with the flaw is not built and is not shipped with the products listed.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.33% (0.02334) | 82.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.38% (0.02379) | 81.63th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.15% (0.00154) | 52.16th | v3 (v2023.03.01) |
| Jul 13, 2024 | 0.15% (0.00154) | 52.13th | v3 (v2023.03.01) |
| May 8, 2023 | 0.15% (0.00153) | 50.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.28% (0.00281) | 63.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v1 |
| Jan 6, 2022 | 0.83% (0.00833) | 23.96th | v1 |
| Sep 1, 2021 | 0.83% (0.00833) | 57.50th | v1 |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (7)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=250c6c49e3b68756b14983c076183568636e2bde x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2018-6412 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1541240 Issue Tracking
- https://github.com/torvalds/linux/commit/250c6c49e3b68756b14983c076183568636e2bde x_refsource_CONFIRMPatchThird Party Advisory
- https://marc.info/?l=linux-fbdev&m=151734425901499&w=2 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-6412
- https://www.cve.org/CVERecord?id=CVE-2018-6412
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=250c6c49e3b68756b14983c076183568636e2bde | x_refsource_CONFIRMPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-6412 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1541240 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/250c6c49e3b68756b14983c076183568636e2bde | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://marc.info/?l=linux-fbdev&m=151734425901499&w=2 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-6412 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-6412 |
Change history (0)
No recorded changes yet.