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CVE-2026-53176 is a Linux kernel iSER target vulnerability in login-PDU processing. The login receive-completion handler subtracts the 76-byte iSER header length from a received work-completion byte length without first enforcing a minimum length. An undersized login PDU therefore produces a negative signed payload length. Subsequent processing preserves the negative value and passes it to memcpy(), where conversion to size_t yields a multi-gigabyte effective copy length. This causes memory access far beyond the fixed-size login request buffer and can fault the kernel.
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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.
36 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the Rocky Linux 9 kernel update; technical details are not provided.
A vulnerability addressed in Huawei EulerOS UVP 2.10.1 kernel-related packages.
A specific vulnerability addressed by the AlmaLinux 10 kernel update; no per-CVE technical detail is supplied.
A vulnerability addressed by Alma Linux advisory RHSA-2026:68531; no technical details are supplied.
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.