kernel: use-after-free in net/sctp/socket.c for a held lock after a peel off
Published Jun 7, 2021
7.8
HIGHCVSS 3.1
EPSS 0.57%
Description
An issue was discovered in the Linux kernel before 4.14.16. There is a use-after-free in net/sctp/socket.c for a held lock after a peel off, aka CID-a0ff660058b8.
Affected products
No data.
Configuration 1
- < 4.14.16
Configuration 2
- n/a
Configuration 3
- n/a
Configuration 4
- n/a
Configuration 5
- n/a
Configuration 6
- n/a
Configuration 7
- n/a
Configuration 8
- n/a
Configuration 9
- n/a
No data.
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 Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/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 2, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.57% (0.00569) | 45.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.57% (0.00569) | 42.43th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00054) | 14.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00074) | 34.12th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.07% (0.00074) | 32.15th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00074) | 30.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Jun 13, 2021 | 1.04% (0.01040) | 0.00th | v1 |
| Jun 8, 2021 | 4.50% (0.04504) | 0.00th | v1 |
References (9)
- https://access.redhat.com/security/cve/CVE-2018-25015 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1969529 Issue Tracking
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.16 x_refsource_MISCMailing ListRelease NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0ff660058b88d12625a783ce9e5c1371c87951f x_refsource_MISCMailing ListPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-25015
- https://security.netapp.com/advisory/ntap-20210720-0002/ x_refsource_CONFIRMThird Party Advisory
- https://sites.google.com/view/syzscope/warning-held-lock-freed x_refsource_MISCExploitThird Party Advisory
- https://syzkaller.appspot.com/bug?id=a8d38d1b68ffc744c53bd9b9fc1dbd6c86b1afe2 x_refsource_MISCExploitMailing ListThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-25015
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2018-25015 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1969529 | Issue Tracking | |
| https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.16 | x_refsource_MISCMailing ListRelease NotesVendor Advisory | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0ff660058b88d12625a783ce9e5c1371c87951f | x_refsource_MISCMailing ListPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-25015 | ||
| https://security.netapp.com/advisory/ntap-20210720-0002/ | x_refsource_CONFIRMThird Party Advisory | |
| https://sites.google.com/view/syzscope/warning-held-lock-freed | x_refsource_MISCExploitThird Party Advisory | |
| https://syzkaller.appspot.com/bug?id=a8d38d1b68ffc744c53bd9b9fc1dbd6c86b1afe2 | x_refsource_MISCExploitMailing ListThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-25015 |
Change history (0)
No recorded changes yet.