CVE-2025-68243Improper Certificate Validation in Linux

Severity
4.7MEDIUM
No vector
EPSS
0.0%
top 94.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedDec 16
Latest updateFeb 24

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Check the TLS certificate fields in nfs_match_client() If the TLS security policy is of type RPC_XPRTSEC_TLS_X509, then the cert_serial and privkey_serial fields need to match as well since they define the client's identity, as presented to the server.

Affected Packages5 packages

Linuxlinux/linux_kernel6.17.06.17.9
Debianlinux/linux_kernel< 6.17.9-1
Ubuntulinux/linux_kernel< 6.17.0-14.14
CVEListV5linux/linux90c9550a8d65fb9b1bf87baf97a04ed91bf61b33b8fa37219074811c04d4ecb742c73e2b296da6a8+2
debiandebian/linux< linux 6.17.9-1 (forky)

🔴Vulnerability Details

8
OSV
linux-azure vulnerabilities2026-02-24
OSV
linux-oem-6.17 vulnerabilities2026-02-17
OSV
linux-aws, linux-oracle vulnerabilities2026-02-17
OSV
linux-gcp vulnerabilities2026-02-12
OSV
linux, linux-raspi, linux-realtime vulnerabilities2026-02-12

📋Vendor Advisories

6
Ubuntu
Linux kernel (Azure) vulnerabilities2026-02-24
Ubuntu
Linux kernel (OEM) vulnerabilities2026-02-17
Ubuntu
Linux kernel (GCP) vulnerabilities2026-02-12
Ubuntu
Linux kernel vulnerabilities2026-02-12
Red Hat
kernel: NFS: Check the TLS certificate fields in nfs_match_client()2025-12-16

🕵️Threat Intelligence

1
Wiz
CVE-2025-68243 Impact, Exploitability, and Mitigation Steps | Wiz