net/smc: fix UAF on lgr list traversal in smcr_port_err()
CVE-2026-98559 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98559, released October 19, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.190-1 | DEBIAN-CVE-2026-98559 | Oct 19, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.113-1 | DEBIAN-CVE-2026-98559 | Oct 19, 2026 |
| linux · Debian 14 | 7.2.9-1 | DEBIAN-CVE-2026-98559 | Oct 19, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.113-1~deb12u1 | DEBIAN-CVE-2026-98559 | Oct 19, 2026 |
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