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CVE-2023-3212 is a NULL pointer dereference in the Linux kernel GFS2 filesystem inode-eviction path. When processing a corrupted GFS2 filesystem, gfs2_evict_inode() can invoke gfs2_trans_begin() after the associated journal descriptor has been freed and its pointer set to NULL. The subsequent reference to that journal descriptor dereferences NULL and crashes the kernel.
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No public exploit code observed for this vulnerability.
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Linux kernel GFS2 NULL-pointer dereference in gfs2_evict_inode.
Linux kernel GFS2 NULL-pointer dereference vulnerability.
Linux kernel GFS2 NULL-pointer dereference in gfs2_evict_inode().
Linux kernel GFS2 NULL-pointer-dereference vulnerability.
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.