CVE-2026-99126
s390/ctcm: Prevent XID null dereference
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: s390/ctcm: Prevent XID null dereference The mpc_validate_xid() function sets grp->saved_xid2->xid2_flag2 to 0x40 to signal XID validation error. If peer XID is NULL or r/w channel pairing mismatch happens, grp->saved_xid2 is never initialized. An attempt to set the flag in such case leads to NULL dereference. Fix this by using the always available priv->xid->xid2_flag2 instead of grp->saved_xid2->xid2_flag2 for validation errors.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 28, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
293d984f0e3604c04dcdbf00117ddc1e5d4b1909 < 34fa3607b7604b3052b19cec8b0ad644818cdd2a 293d984f0e3604c04dcdbf00117ddc1e5d4b1909 < 8a2f7a4ad1d81612fa65bfa4d392ba1bb2f5eeab 293d984f0e3604c04dcdbf00117ddc1e5d4b1909 < b264d8422779d69febce914efc47a92a85cc382c
Linux / Linux
2.6.26