CVE-2026-80980Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's SMC (Server Message Block over Remote Direct Memory Access) protocol implementation. A concurrency issue exists where three connection state flags (killed, freed, and out_of_sync) share a single byte …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.8
none → medium
0.2% → 0.6%
— → 4.8
none → medium
— → 9.8
none → critical
Last analysed / modified upstream
9.8 → 4.8
critical → medium
9.8 → 4.8
critical → medium
4.8 → 5.5
A flaw was found in the Linux kernel's SMC (Server Message Block over Remote Direct Memory Access) protocol implementation. A concurrency issue exists where three connection state flags (killed, freed, and out_of_sync) share a single byte in the smc_connection structure without proper locking mechanisms. This allows for a read-modify-write race condition when different functions attempt to modify these flags simultaneously. This could lead to incorrect connection state management, potentially causing unexpected behavior or a denial of service.
kernel: net/smc: stop killed, freed and out_of_sync sharing a byte — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-80947High· 7.0kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop (CVE-2026-80947)
CVE-2026-80981High· 7.0kernel: net/smc: fix use-after-free of the LLC qentry in smc_llc_srv_add_link() (CVE-2026-80981)
CVE-2026-80985High· 7.0kernel: net/smc: carry oversized SMC-Rv2 LLC messages in the queue entry (CVE-2026-80985)
CVE-2026-80986High· 7.0kernel: net/smc: bound the peer rkey counts in SMC-Rv2 LLC messages (CVE-2026-80986)
CVE-2026-81015High· 7.0kernel: platform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails (CVE-2026-81015)