High severity7.8NVD Advisory· Published Jul 24, 2026· Updated Aug 11, 2026
CVE-2026-64217
CVE-2026-64217
Description
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.
Affected products
7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.3,<6.6.142
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204nvdPatch
- git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39dnvdPatch
- git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9nvdPatch
- git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94dnvdPatch
- git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12nvdPatch
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