CVE-2026-80984
CVE CVE-2026-80984EUVD EUVD-2026-76307Published 2026-09-11T19:42:43.000ZLast changed 2026-09-14T11:59:27.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net/smc: do not dereference an unset send buffer on the SMC-D teardown path smc_close_stream_wait() calls smc_tx_prepared_sends() from inside its sk_wait_event() condition, and sk_wait_event() evaluates that condition once with the socket lock released. smcd_buf_detach() clears conn->sndbuf_desc from smc_conn_kill() under lock_sock(), so a link group terminating while a socket waits there leaves the helper dereferencing NULL, faulting out of close(). SIOCOUTQ reads the field by hand, and smc_close_cancel_work() drops the lock across two cancel_*_sync() calls. Sample the pointer once in the helper, report nothing prepared while it is unset, and bound the ioctl the same way. The receive tasklet dereferences the field directly in smc_cdc_msg_recv_action(), not through this helper; 1/2 is what keeps it from running that late.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux ae2be35cbed2c8385e890147ea321a3fcc3ca5fa <f950e1b1f0aad334f9a9ee552c4dd5b794ebdd45; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa <b395dd319cea422239cb45b998fb38d7e373af87; patch: 6.6.157; patch: 6.18.50; 6.10; patch: 7.2.4; 21f6f41e82e59740e26e06e77bdf58dc7f6f08dd <ab26e12dd5d2f43d939fcf456933a816e81d2e51; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa <f517cf02033801a28f98d86ca613a3533cf066b3; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa <e3fcff8d22a6c9540748846cd800443a643553a6; patch: 7.3-rc1; patch: 6.12.109; 6.6.66 <6.6.157; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.