CVE-2021-29627

HighCVSS 7.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-415 CWE-416

Affected software

Vendor	Product	Versions
n/a	FreeBSD	FreeBSD 12.2-RELEASE before p6

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

Timeline

Published: Apr 7, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-296287.5In FreeBSD 13.0-STABLE before n245764-876ffe28796c, 12.2-STABLE before r369857, 13.0-RELEASE before p1, and 12.2-RELEASE before p7, a system CVE-2021-296297.5In FreeBSD 13.0-STABLE before n245765-bec0d2c9c841, 12.2-STABLE before r369859, 11.4-STABLE before r369866, 13.0-RELEASE before p1, 12.2-REL CVE-2021-296308.1In FreeBSD 13.0-STABLE before n246938-0729ba2f49c9, 12.2-STABLE before r370383, 11.4-STABLE before r370381, 13.0-RELEASE before p4, 12.2-REL CVE-2021-296317.8In FreeBSD 13.0-STABLE before n246941-20f96f215562, 12.2-STABLE before r370400, 11.4-STABLE before r370399, 13.0-RELEASE before p4, 12.2-REL CVE-2021-296327.5In FreeBSD 13.0-STABLE before n247428-9352de39c3dc, 12.2-STABLE before r370674, 13.0-RELEASE before p6, and 12.2-RELEASE before p12, certain CVE-2021-296418.8Directus 8 before 8.8.2 allows remote authenticated users to execute arbitrary code because file-upload permissions include the ability to u CVE-2021-296425.3GistPad before 0.2.7 allows a crafted workspace folder to change the URL for the Gist API, which leads to leakage of GitHub access tokens.CVE-2021-296435.4PRTG Network Monitor before 21.3.69.1333 allows stored XSS via an unsanitized string imported from a User Object in a connected Active Direc CVE-2021-296449.8Hitachi JP1/IT Desktop Management 2 Agent 9 through 12 contains a remote code execution vulnerability because of an Integer Overflow. An att CVE-2021-296457.8Hitachi JP1/IT Desktop Management 2 Agent 9 through 12 calls the SendMessageTimeoutW API with arbitrary arguments via a local pipe, leading CVE-2021-296465.5An issue was discovered in the Linux kernel before 5.11.11. tipc_nl_retrieve_key in net/tipc/node.c does not properly validate certain data CVE-2021-296475.5An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows attackers to obtain sensitive information