sctp: validate Adaptation Indication parameter length
In the Linux kernel, the following vulnerability has been resolved: sctp: validate Adaptation Indication parameter length 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.
- Published
- Aug 28, 2026
- Updated
- Aug 29, 2026
- EPSS
- 0.6% · 45th percentile
- CWE
- —
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.6%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.5
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
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Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 2.6.12affected
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before fa7861ddbe3b525b5d541c15c3953d3569e6eb0eaffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 4c92c601c061e5602db2edeea54fef74aa304027affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954aaffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 93942b5772e0eee4147d4799cc1b936ae12fa615affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 5fd7cfc708dfc988ae9920c21075e6121bc89926affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 17b412468c7a44f66a385bda48cdc1e94e39bd6daffected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before bfa28cf99eb4d096c87da939f54233444d209ca5affected · git
- 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17affected · git
- before 2.6.12not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.187-1 | 6.1.187-1 |
| Debian:12 | linux-6.12 | before 6.12.107-1~deb12u1 | 6.12.107-1~deb12u1 |
| Debian:13 | linux | before 6.12.105-1 | 6.12.105-1 |
| Debian:14 | linux | before 7.1.8-1 | 7.1.8-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 17b412468c7a44f66a385bda48cdc1e94e39bd6d | Vendor (CNA) |
| Linux Linux | 4c92c601c061e5602db2edeea54fef74aa304027 | Vendor (CNA) |
| Linux Linux | 5fd7cfc708dfc988ae9920c21075e6121bc89926 | Vendor (CNA) |
| Linux Linux | 74b21f52c5c5a71a05c0ff70e513f4f04ff28b17 | Vendor (CNA) |
| Linux Linux | 7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a | Vendor (CNA) |
| Linux Linux | 93942b5772e0eee4147d4799cc1b936ae12fa615 | Vendor (CNA) |
| Linux Linux | bfa28cf99eb4d096c87da939f54233444d209ca5 | Vendor (CNA) |
| Linux Linux | fa7861ddbe3b525b5d541c15c3953d3569e6eb0e | Vendor (CNA) |
| azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 | 6.6.152.1-1 · Release Notes | Microsoft (MSRC) |
| debian:linux | 6.1.187-1 · Debian:12 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.107-1~deb12u1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
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CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/17b412468c7a44f66a385bda48cdc1e94e39bd6d
- git.kernel.org/stable/c/4c92c601c061e5602db2edeea54fef74aa304027
- git.kernel.org/stable/c/5fd7cfc708dfc988ae9920c21075e6121bc89926
- git.kernel.org/stable/c/74b21f52c5c5a71a05c0ff70e513f4f04ff28b17
- git.kernel.org/stable/c/7b7e4e3640d57bd8857f0052c8b0d8ed4e5e954a
- git.kernel.org/stable/c/93942b5772e0eee4147d4799cc1b936ae12fa615
- git.kernel.org/stable/c/bfa28cf99eb4d096c87da939f54233444d209ca5
- git.kernel.org/stable/c/fa7861ddbe3b525b5d541c15c3953d3569e6eb0e
Vendor advisories and official records. Exploit/PoC links are deliberately left out.