Bug 2506805 (CVE-2026-64217) - CVE-2026-64217 kernel: Linux kernel netfs: Memory corruption leading to denial of service and potential privilege escalation
Summary: CVE-2026-64217 kernel: Linux kernel netfs: Memory corruption leading to denia...
Keywords:
Status: NEW
Alias: CVE-2026-64217
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-24 16:04 UTC by OSIDB Bzimport
Modified: 2026-08-13 15:03 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-24 16:04:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfs: Fix overrun check in netfs_extract_user_iter()

Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills
pages[], then those pages don't get included in the iterator constructed at
the end of the function.  If there was an overfill, memory corruption has
already happened.
Comment 1 Mauro Matteo Cascella 2026-07-28 11:06:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072415-CVE-2026-64217-889e@gregkh/T
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