VulnerabilityModified
CVE-2021-29627
Additional operations on the socket can lead to a double free or use after free.
HIGH 7.8EPSS 0.75%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In FreeBSD 13.0-STABLE before n245050, 12.2-STABLE before r369525, 13.0-RC4 before p0, and 12.2-RELEASE before p6, listening socket accept filters implementing the accf_create callback incorrectly freed a process supplied argument string. Additional operations on the socket can lead to a double free or use after free.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.75% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415, CWE-416
- Affected
- freebsd/freebsd
- Source
- secteam@freebsd.org
References
- https://security.FreeBSD.org/advisories/FreeBSD-SA-21:09.accept_filter.ascVendor Advisory
- https://security.netapp.com/advisory/ntap-20210423-0007/Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-21:09.accept_filter.ascVendor Advisory
- https://security.netapp.com/advisory/ntap-20210423-0007/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.