PatchTheCEVCVE-2026-98124: In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for falloc
26
Routine
MEDIUM 5.5WATCHLISTUPGRADE
CVE-2026-98124 is a medium-severity flaw (CVSS 5.5) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In the Linux kernel, the following vulnerability has been resolved: smb/client: invalidate fscache for fallocate range operations smb3_zero_range(), smb3_punch_hole(), smb3_insert_range(), and smb3_collapse_range() modify file contents through server-side range operations. These operations discard the affected page cache, but leave the FS-Cache cookie valid, so a later read may return data cached before the range operation. Fix this by invalid
Why this priority
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 92%) |
| CISA exploited list | No |
| Weakness | CWE-672 |
| Published | 2026-09-25 |
| Last modified | 2026-10-22 |
Publisher (CNA): kernel.org · Vendor: linux
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
linux linux kernel UPGRADE
Affected: >= 3.17.1 and < 6.6.160 · >= 6.7 and < 6.12.114 · >= 6.13 and < 7.2.7 · 3.17 · 3.17 rc2 · 3.17 rc3 · 3.17 rc4 · 3.17 rc5
Fixed in: 6.6.160, 6.12.114, 7.2.7
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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