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A vulnerability in the Linux kernel's TCP stack allowed for stream corruption when serving HTTP requests from an Apache web server using a CIFS mount-point with memory-mapped files. The issue arises from nested access to the task page fragment (sk_page_frag) due to a page fault on a memory-mapped user-space buffer from a CIFS file. The page fault handler could perform an SMB transaction on a different socket within the same process context, leading to a nested allocation that corrupts the page fragment in use by the outer sendmsg call, resulting in TCP stream corruption.
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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.
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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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel vulnerability addressed by this advisory; technical details are not provided in the content.
A CVE referenced by the Red Hat kernel security advisory; the content does not describe its technical impact.
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.