CVE-2026-98685smb: client: discard post-EOF pagecache when extending a file via clone range
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: smb: client: discard post-EOF pagecache when extending a file via clone range cifs_remap_file_range() discarded the pagecache only for the folios overlapping the destination region, so when a clone extends the file the folio straddling the old EOF - which may hold data dirtied past EOF through an mmap - was never dropped and became visible as file content once the file was extended. Start the discard at the smaller of fstart and the old EOF. i_size is still old here, so nothing past the old EOF is flushed to the server.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from c54fc3a4f375663f2361a9cbb2955fb4ef912879 before 15bb9f1d3e967e328649e92a1451e60a0dc66118; from c54fc3a4f375663f2361a9cbb2955fb4ef912879 before 4721587f96cb8de8164f3fd203093a0875560999; 358bd5f436d820bb758833050aae065b35d6986c; 43801359c8971cc49b4a4db5015fba77fbd09c32; from 6.1.68 before 6.2; from 6.6.7 before 6.7 | CNA record |
References
- https://git.kernel.org/stable/c/15bb9f1d3e967e328649e92a1451e60a0dc66118
- https://git.kernel.org/stable/c/4721587f96cb8de8164f3fd203093a0875560999
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.