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CVE-2022-50341 is an out-of-bounds write vulnerability in the Linux kernel CIFS/SMB client encryption path. During encrypted SMB request processing, scatterwalk_copychunks() can write to a buffer supplied by crypt_message() without correctly handling a vmalloc-backed buffer's page mapping and offset. When the final eight bytes cross a page boundary, the copy can write to read-only memory, causing a kernel oops. The fix updates cifs_sg_set_buf() to map the correct pages and offsets for vmalloc-backed buffers.
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What an attacker gets, and what they’ve been doing with it.
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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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel CIFS encryption flaw that could trigger an oops by writing across a page boundary when handling a vmalloc-backed buffer.
A Linux kernel CIFS vulnerability causing an oops during encryption.
A Linux kernel CIFS vulnerability that can cause a kernel oops during encryption handling.
Linux kernel CIFS flaw that can cause a kernel oops during encryption operations.
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.