sctp: validate Adaptation Indication parameter length
Published Aug 28, 2026
7.5
HIGHCVSS 3.1
EPSS 0.33%
Description
The Adaptation Layer Indication parameter contains a fixed 32-bit Adaptation Code Point after its parameter header. However, sctp_verify_param() accepts a header-only parameter because the generic parameter walker only requires the header to be present.
sctp_process_param() then reads adaptation_ind beyond the declared parameter. When the malformed parameter is last in an INIT, the read starts at the receive skb tail, and the value is copied into the state cookie returned in the INIT ACK. This may disclose four receive-buffer tail bytes.
Require the declared parameter length to match the fixed structure size and abort the association through the existing invalid parameter length path otherwise.
Affected products
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 2.6.12StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<2.6.12
- Version 5.10.265StatusunaffectedConstraints<=5.10.*
- Version 5.15.216StatusunaffectedConstraints<=5.15.*
- Version 6.1.183StatusunaffectedConstraints<=6.1.*
- Version 6.12.103StatusunaffectedConstraints<=6.12.*
- Version 6.18.44StatusunaffectedConstraints<=6.18.*
- Version 6.6.151StatusunaffectedConstraints<=6.6.*
- Version 7.1.8StatusunaffectedConstraints<=7.1.*
- Version 7.2StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
Red Hat Enterprise Linux 10
kernel
Fix deferred
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Fix deferred
Red Hat Enterprise Linux 7
kernel-rt
Fix deferred
Red Hat Enterprise Linux 8
kernel
Fix deferred
Red Hat Enterprise Linux 8
kernel-rt
Fix deferred
Red Hat Enterprise Linux 9
kernel
Fix deferred
Red Hat Enterprise Linux 9
kernel-rt
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Fix deferred | 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
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 3, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.33% (0.00329) | 23.76th | v5 (v2026.06.15) |
| Aug 28, 2026 | 0.16% (0.00164) | 5.89th | v5 (v2026.06.15) |
References (13)
- https://access.redhat.com/security/cve/CVE-2026-80717 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2525437 Issue Tracking
- https://git.kernel.org/stable/c/17b412468c7a44f66a385bda48cdc1e94e39bd6d
- https://git.kernel.org/stable/c/4c92c601c061e5602db2edeea54fef74aa304027
- https://git.kernel.org/stable/c/5fd7cfc708dfc988ae9920c21075e6121bc89926
- https://git.kernel.org/stable/c/74b21f52c5c5a71a05c0ff70e513f4f04ff28b17
- https://git.kernel.org/stable/c/7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a
- https://git.kernel.org/stable/c/93942b5772e0eee4147d4799cc1b936ae12fa615
- https://git.kernel.org/stable/c/bfa28cf99eb4d096c87da939f54233444d209ca5
- https://git.kernel.org/stable/c/fa7861ddbe3b525b5d541c15c3953d3569e6eb0e
- https://lore.kernel.org/linux-cve-announce/2026082810-CVE-2026-80717-e0b5@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-80717
- https://www.cve.org/CVERecord?id=CVE-2026-80717
Change history (0)
No recorded changes yet.