Vulnerability in Linux

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4019

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-98866CVE-2026-98624CVE-2026-98745+326 more CVEs

[ References ]References

• git.kernel.org/stable/c/00a59600ae72d24859d0ad1783a78bc921bc2599
• git.kernel.org/stable/c/0edcc4284392b28826b5d37532b366b291e6e0fa
• git.kernel.org/stable/c/34bcf11cd2528ae00bb6d764d808083c66824277
• git.kernel.org/stable/c/3d35f069e1c119992000d51236dbe54da2d4e61e
• git.kernel.org/stable/c/3d65a2eb4449fc9658fb860dea893025d028d90e
• git.kernel.org/stable/c/61cb282fe97b3b0ba32ca09417a693162bf4ae3f
• git.kernel.org/stable/c/a9b968e42690d784c241a0761c10253271f7df5d