CVE-2026-98559
N/AIn 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.
NO EXPLOITATION SIGNALS
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 10th percentile
○ In CISA KEV
○ Public exploit / PoC
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-98559/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-98559/poc.json
References
Technical & other
- https://git.kernel.org/stable/c/34bcf11cd2528ae00bb6d764d808083c66824277
- https://git.kernel.org/stable/c/0edcc4284392b28826b5d37532b366b291e6e0fa
- https://git.kernel.org/stable/c/00a59600ae72d24859d0ad1783a78bc921bc2599
- https://git.kernel.org/stable/c/3d35f069e1c119992000d51236dbe54da2d4e61e
- https://git.kernel.org/stable/c/3d65a2eb4449fc9658fb860dea893025d028d90e
- https://git.kernel.org/stable/c/a9b968e42690d784c241a0761c10253271f7df5d
- https://git.kernel.org/stable/c/61cb282fe97b3b0ba32ca09417a693162bf4ae3f