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CVE-2023-52653 is a memory-leak vulnerability in the Linux kernel SUNRPC GSS/Kerberos security-context import implementation. Memory allocated by kmemdup for ctx->mech_used.data is not freed by gss_import_v2_context or its sole caller, gss_krb5_import_sec_context. When context import fails, the caller frees the context structure without releasing the associated allocation. This leaks kernel memory and creates an availability risk. The issue was introduced in Linux kernel 2.6.35.
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No public exploit code observed for this vulnerability.
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16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A memory leak in the Linux kernel SUNRPC GSS context-import handling. Allocated memory is not properly freed on an error path, potentially affecting availability. The advisory rates it medium severity, with a CVSS v3 base score of 5.5 and a local, low-privilege attack vector.
A Unity Linux/UOS Server locally exploitable vulnerability with low attack complexity and low privileges required, whose stated impact is limited to high availability impact (denial of service).
Linux kernel SUNRPC memory leak in gss_import_v2_context.
A Linux kernel SUNRPC memory-leak vulnerability in gss_import_v2_context.
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.