CVE-2020-7463
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…
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.40% probability · 34th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- freebsd/freebsd · apple/icloud · apple/itunes · apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/tvos · apple/watchos
- Source
- secteam@freebsd.org
EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://seclists.org/fulldisclosure/2021/Apr/49Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/50Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/57Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/58Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/59Mailing List, Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.ascVendor Advisory
- https://support.apple.com/kb/HT212317Third Party Advisory
- https://support.apple.com/kb/HT212318Third Party Advisory
- https://support.apple.com/kb/HT212319Third Party Advisory
- https://support.apple.com/kb/HT212321Third Party Advisory
- https://support.apple.com/kb/HT212323Third Party Advisory
- https://support.apple.com/kb/HT212324Third Party Advisory
- https://support.apple.com/kb/HT212325Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/49Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/50Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/57Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/58Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Apr/59Mailing List, Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:25.sctp.ascVendor Advisory
- https://support.apple.com/kb/HT212317Third Party Advisory
- https://support.apple.com/kb/HT212318Third Party Advisory
- https://support.apple.com/kb/HT212319Third Party Advisory
- https://support.apple.com/kb/HT212321Third Party Advisory
- https://support.apple.com/kb/HT212323Third Party Advisory
- https://support.apple.com/kb/HT212324Third Party Advisory
- https://support.apple.com/kb/HT212325Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.