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CVE-2022-50403 has been rejected or withdrawn by its CVE Numbering Authority and does not represent an active CVE record. The associated Linux ext4 code issue involved undefined behavior in ext4_check_flag_values, where a signed 32-bit value was shifted left by 31 bits during ext4 initialization, causing a UBSAN shift-out-of-bounds warning. The upstream code correction uses an unsigned value for the significant-bit operation.
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No public exploit code observed for this vulnerability.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Undefined behavior in a bit-shift operation in the Linux kernel ext4 filesystem's flag-value validation.
Linux kernel ext4 undefined-behavior flaw involving a bit shift in ext4_check_flag_values.
A Linux kernel ext4 vulnerability involving undefined bit-shift behavior in ext4_check_flag_values.
Linux kernel ext4 flaw caused by undefined bit-shift behavior in ext4_check_flag_values.
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.