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CVE-2026-98559

net/smc: fix UAF on lgr list traversal in smcr_port_err()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 34bcf11cd2528ae00bb6d764d808083c66824277; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 0edcc4284392b28826b5d37532b366b291e6e0fa; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 00a59600ae72d24859d0ad1783a78bc921bc2599; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 3d35f069e1c119992000d51236dbe54da2d4e61e; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 3d65a2eb4449fc9658fb860dea893025d028d90e; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in a9b968e42690d784c241a0761c10253271f7df5d; From 541afa10c126b6c22c2a805a559c70cc41fd156e · fixed in 61cb282fe97b3b0ba32ca09417a693162bf4ae3f

  • Linux Linux

    5.8

  • KernelLinux

    From 5.8.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.55; From 6.19.0 · fixed in 7.2.9

References 7

git.kernel.org