kernel: use-after-free in keyring key revocation
Published Mar 31, 2017
7.8
HIGHCVSS 3.1
EPSS 0.80%
Description
Use-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer dereference) or possibly gain privileges by revoking keyring keys being used for ext4, f2fs, or ubifs encryption, causing cryptographic transform objects to be freed prematurely.
Affected products
No data.
- ≥ 4.2 · < 4.4.59
- ≥ 4.5 · < 4.9.20
- ≥ 4.10 · < 4.10.7
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-rt
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-rt | 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 Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2 as the code where the flaw was found is not present in these products.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:C/I:C/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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.80% (0.00799) | 54.94th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.80% (0.00799) | 51.58th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.32% (0.00315) | 52.35th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.67% (0.01669) | 76.02th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.67% (0.01669) | 75.98th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.67% (0.01669) | 73.93th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.67% (0.01669) | 53.27th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.62% (0.03615) | 68.44th | v1 |
| Jan 6, 2022 | 3.62% (0.03615) | 68.14th | v1 |
| Sep 1, 2021 | 3.62% (0.03615) | 82.12th | v1 |
| Apr 14, 2021 | 3.62% (0.03615) | 0.00th | v1 |
References (9)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1b53cf9815bb4744958d41f3795d5d5a1d365e2d x_refsource_CONFIRMPatchThird Party Advisory
- http://www.securityfocus.com/bid/97308 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-7374 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1438394 Issue Tracking
- https://github.com/torvalds/linux/commit/1b53cf9815bb4744958d41f3795d5d5a1d365e2d x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-7374
- https://source.android.com/security/bulletin/2017-10-01 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-7374
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.7 x_refsource_CONFIRMRelease NotesVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1b53cf9815bb4744958d41f3795d5d5a1d365e2d | x_refsource_CONFIRMPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/97308 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-7374 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1438394 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/1b53cf9815bb4744958d41f3795d5d5a1d365e2d | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-7374 | ||
| https://source.android.com/security/bulletin/2017-10-01 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-7374 | ||
| https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.7 | x_refsource_CONFIRMRelease NotesVendor Advisory |
Change history (0)
No recorded changes yet.