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
linux: linux kernel
References5
- git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204 Patch
- git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39d Patch
- git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9 Patch
- git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94d Patch
- git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 14 November 2026
- CWE
- CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.