Loading vulnerability…
CVE-2023-52458 affects Linux kernel block-layer partition addition and resizing, which fail to validate that partition lengths are aligned to the disk's logical block size. On disks with logical blocks larger than 512 bytes, a misaligned partition can cause bio_truncate() to reduce a final-sector read below the logical block size, producing an I/O error. When integrity data is supported, the condition can additionally trigger a null-pointer dereference in bio_integrity_free().
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel block subsystem NULL pointer dereference involving misaligned length and logical block size. Listed as fixed by the updated rhel9/support-tools image.
Linux kernel block-layer null-pointer dereference in ioctl handling when length and logical block size are misaligned.
Linux kernel block-layer null-pointer dereference caused by misaligned ioctl length and logical block size.
Linux kernel block-layer null-pointer dereference in ioctl handling when length and logical block size are misaligned.
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.