curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://curl.se/docs/CVE-2022-42915.html Vendor Advisory
- https://curl.se/docs/CVE-2022-42915.html Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.1 · haxx, fedoraproject, netappNVD modified 2026-10-14 19:16
Affected (CPE criteria) 12
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
References 22
- http://seclists.org/fulldisclosure/2023/Jan/19 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/20 Mailing List, Third Party Advisory
- https://curl.se/docs/CVE-2022-42915.html Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37YEVVC6NAF6H7UHH6YAUY5QEVY6LIH2/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVU3IMZCKR4VE6KJ4GCWRL2ILLC6OV76/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q27V5YYMXUVI6PRZQVECON32XPVWTKDK/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221209-0010/ Third Party Advisory
- https://support.apple.com/kb/HT213604 Third Party Advisory
- https://support.apple.com/kb/HT213605 Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/19 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/20 Mailing List, Third Party Advisory
- https://curl.se/docs/CVE-2022-42915.html Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37YEVVC6NAF6H7UHH6YAUY5QEVY6LIH2/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVU3IMZCKR4VE6KJ4GCWRL2ILLC6OV76/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q27V5YYMXUVI6PRZQVECON32XPVWTKDK/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221209-0010/ Third Party Advisory
- https://support.apple.com/kb/HT213604 Third Party Advisory
- https://support.apple.com/kb/HT213605 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-892048.html