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CVE-2022-4450 is a double-free vulnerability in OpenSSL PEM_read_bio_ex() and its PEM_read_bio() and PEM_read() wrappers. A PEM file with a zero-byte payload can cause PEM_read_bio_ex() to return failure while leaving its header output argument pointing to memory that has already been freed. If the calling application frees that header pointer, a double free occurs. Indirect callers, including PEM_X509_INFO_read_bio_ex() and SSL_CTX_use_serverinfo_file(), can also be affected when their calling behavior frees the header after the failure path. The OpenSSL asn1parse command-line application is affected.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
41 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the CIQ edk2 security update for Rocky Linux 8.6.
A double-free vulnerability in OpenSSL after calling PEM_read_bio_ex.
Unknown
A vulnerability addressed through the Red Hat Enterprise Linux 9 el9/flatpak-sdk container-image update; no technical flaw details are provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.