CVE-2026-99126
Last modified
CVE-2026-99126 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
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.
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < f9d9e2dadc9fbdfe01aeb6581978c3b59092919e; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < a7c3e1795e4fe5e6680cab7cd7eee0503b00a248; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < c11e435d334e4c311eaaf721e179a5ca6852c221; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < 977dac6cc5531a8e058df05b6af94406b940cb9e; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < 1525fb6e2f9f9a2c8c8723ee0959b1130a6b8213; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < 34fa3607b7604b3052b19cec8b0ad644818cdd2a; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < 8a2f7a4ad1d81612fa65bfa4d392ba1bb2f5eeab; >= 293d984f0e3604c04dcdbf00117ddc1e5d4b1909, < b264d8422779d69febce914efc47a92a85cc382c |
| Linux | Linux | 2.6.26 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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