Vulnerability record · CVE-2026-64217 · published 24 July 2026

CVE-2026-64217: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.13% · top 97.9% CWE-787 · Out-of-bounds write

7.8CVSS 3.1 base score

0.13%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References

11 Aug 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux

References

Link	Tags
https://git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204	Patch
https://git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39d	Patch
https://git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9	Patch
https://git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94d	Patch
https://git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12	Patch

Track CVE-2026-64217 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-39682Linux kernel TLS zero-length record handling flaw on rx_listThe Linux kernel TLS receive path mishandles zero-length records that arrive from the rx_list, breaking the assumption that a record type change cann…KEVEPSS 2.9%analysed5 Sep 2025 8.8CVE-2026-53266Linux kernel ebtables SNAT out-of-bounds write in ARP rewriteThe ebtables SNAT target rewrites the ARP sender hardware address via skb_store_bits() without first making that range writable. When the ARP SHA byt…KEVEPSS 0.65%analysed25 Jun 2026 8.8CVE-2023-3079Google Chrome V8 type confusion enables heap corruptionCVE-2023-3079 is a type confusion flaw in the V8 JavaScript engine in Google Chrome before 114.0.5735.110. A crafted HTML page can trigger the confus…KEVEPSS 32%analysed5 Jun 2023 8.8CVE-2013-6282Linux kernel ARM get_user/put_user missing address validationThe get_user and put_user API functions in the Linux kernel before 3.5.5 on v6k and v7 ARM platforms fail to validate certain addresses, allowing cra…KEVEPSS 40%analysed20 Nov 2013 8.4CVE-2022-0185Linux Kernel Filesystem Context Heap Buffer OverflowThe legacy_parse_param function in the Linux kernel's Filesystem Context functionality fails to properly verify supplied parameter lengths, causing a…KEVEPSS 25%analysed11 Feb 2022 8.4CVE-2013-2094Linux Kernel perf_swevent_init Integer Type Flaw Enables Local Privilege EscalationThe perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, allowing a local user to…KEVEPSS 48%analysed14 May 2013 7.8CVE-2026-53362Linux kernel IPv6 UDP paged allocation out-of-bounds write__ip6_append_data() in the Linux kernel mis-accounts fraggap on the paged-allocation path, leaving the linear skb area undersized while pagedlen is o…KEVEPSS 0.71%analysed4 Jul 2026 7.8CVE-2026-31431Linux kernel algif_aead in-place crypto operation flawThe Linux kernel's algif_aead AF_ALG AEAD interface operated in-place on buffers that come from different mappings, a flaw the fix resolves by revert…KEVEPSS 3.4%analysed22 Apr 2026

Source: NIST National Vulnerability Database (record CVE-2026-64217), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.