CVE-2026-98559

high

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF on lgr list traversal in smcr_port_err() smcr_port_err() traverses smc_lgr_list.list without holding smc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched() to free an lgr while it is still being dereferenced. Hold smc_lgr_list.lock across the traversal. Update smc_ib_gid_check() to call smcr_port_err() after releasing the lock.

References

https://git.kernel.org/stable/c/a9b968e42690d784c241a0761c10253271f7df5d

https://git.kernel.org/stable/c/61cb282fe97b3b0ba32ca09417a693162bf4ae3f

https://git.kernel.org/stable/c/3d65a2eb4449fc9658fb860dea893025d028d90e

https://git.kernel.org/stable/c/3d35f069e1c119992000d51236dbe54da2d4e61e

https://git.kernel.org/stable/c/34bcf11cd2528ae00bb6d764d808083c66824277

https://git.kernel.org/stable/c/0edcc4284392b28826b5d37532b366b291e6e0fa

https://git.kernel.org/stable/c/00a59600ae72d24859d0ad1783a78bc921bc2599

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103604

Details

Source: Mitre, NVD

Published: 2026-10-18

Updated: 2026-10-19

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00205