Use after free in FreeBSD
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
In FreeBSD 12.1-STABLE before r364644, 11.4-STABLE before r364651, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, improper handling in the kernel causes a use-after-free bug by sending large user messages from multiple threads on the same SCTP socket. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | FreeBSD | FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13 | — | No fix listed | CNA |
- FreeBSD Vendor— Affected FreeBSD 12.1-RELEASE before p9, 11.4-RELEASE before p3, 11.3-RELEASE before p13 Fixed in — No fix listed CNA
CPE configurations NVD · 34
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:* | 11.3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:* | 11.3 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:* | 11.3 p10 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p11:*:*:*:*:*:* | 11.3 p11 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p12:*:*:*:*:*:* | 11.3 p12 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:* | 11.3 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:* | 11.3 p3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:* | 11.3 p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:* | 11.3 p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:* | 11.3 p6 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:* Versions 11.3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:* Versions 11.3 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:* Versions 11.3 p10 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p11:*:*:*:*:*:* Versions 11.3 p11 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p12:*:*:*:*:*:* Versions 11.3 p12 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:* Versions 11.3 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:* Versions 11.3 p3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:* Versions 11.3 p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:* Versions 11.3 p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:* Versions 11.3 p6 Vulnerable ·FreeBSD
Show 24 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:* | 11.3 p7 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:* | 11.3 p8 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:* | 11.3 p9 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* | 11.4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* | 11.4 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* | 11.4 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:* | 12.1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:* | 12.1 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:* | 12.1 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:* | 12.1 p3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:* | 12.1 p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:* | 12.1 p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:* | 12.1 p6 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p7:*:*:*:*:*:* | 12.1 p7 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.1:p8:*:*:*:*:*:* | 12.1 p8 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* | 12.2 | Vulnerable | FreeBSD |
| cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* | before 12.3 | Vulnerable | Apple |
| cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* | before 12.11.3 | Vulnerable | Apple |
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 14.1 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 14.5 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 14.5 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | 11.0 to before 11.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 14.5 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 7.4 | Vulnerable | Apple |
- cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:* Versions 11.3 p7 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:* Versions 11.3 p8 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:* Versions 11.3 p9 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* Versions 11.4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* Versions 11.4 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* Versions 11.4 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:* Versions 12.1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:* Versions 12.1 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:* Versions 12.1 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:* Versions 12.1 p3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:* Versions 12.1 p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:* Versions 12.1 p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:* Versions 12.1 p6 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p7:*:*:*:*:*:* Versions 12.1 p7 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.1:p8:*:*:*:*:*:* Versions 12.1 p8 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* Versions 12.2 Vulnerable ·FreeBSD
- cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* Versions before 12.3 Vulnerable ·Apple
- cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* Versions before 12.11.3 Vulnerable ·Apple
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 14.1 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.5 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.5 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.3 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 14.5 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 7.4 Vulnerable ·Apple
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7463
- 2026-10-03 Alias added: GHSA-j8c4-54pw-h2vw
References
Advisory 13
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.asc
- https://support.apple.com/kb/HT212317
- https://support.apple.com/kb/HT212319
- https://support.apple.com/kb/HT212325
- https://support.apple.com/kb/HT212323
- https://support.apple.com/kb/HT212324
- https://support.apple.com/kb/HT212321
- https://support.apple.com/kb/HT212318
- 20210427 APPLE-SA-2021-04-26-1 iOS 14.5 and iPadOS 14.5
- 20210427 APPLE-SA-2021-04-26-2 macOS Big Sur 11.3
- 20210427 APPLE-SA-2021-04-26-9 iTunes 12.11.3 for Windows
- 20210427 APPLE-SA-2021-04-26-8 iCloud for Windows 12.3
- 20210427 APPLE-SA-2021-04-26-7 Safari 14.1
Sources
- CVE-2020-7463 · CVE Program
- CVE-2020-7463 · NVD
- FIRST EPSS
- GHSA-j8c4-54pw-h2vw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences