CVE-2026-90309
CVE CVE-2026-90309EUVD EUVD-2026-81970Published 2026-09-17T16:08:30.000ZLast changed 2026-09-18T17:54:28.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Hold CQ references when processing EQ events EQ handlers look up CQs from dev->cq_xa and invoke CQ completion or error callbacks outside the xarray lock. erdma_destroy_cq() can erase the CQ from the xarray and free its queue buffer and doorbell record while a previously scheduled EQ handler is still using the CQ. Add a CQ refcount and take a reference under the xarray lock with refcount_inc_not_zero(). Remove the CQ from the xarray before dropping the destroy-path reference, then wait for in-flight EQ users before releasing CQ resources.
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 patch: 7.2.6; 155055771704f8cbb5c176a4309b7dc30a50450c <98df2aee1459ee1c62c70cbe9b370d2a532aea36; patch: 6.18.52; 155055771704f8cbb5c176a4309b7dc30a50450c <05b8ca493dd02319bca93c640b259c2ba51ef321; patch: 6.12.110; 155055771704f8cbb5c176a4309b7dc30a50450c <610ef81797bb4f709e8675c1d8d093bb9ccdcbd8; patch: 7.3-rc1; 6.0; patch: 6.1.188; 155055771704f8cbb5c176a4309b7dc30a50450c <4545f355654d044d35a31cd01cc46f491a8a7c36; patch: 6.6.157; patch: 0; 155055771704f8cbb5c176a4309b7dc30a50450c <c0a83f29a24c7e7f8516630848ef6db4c174deed; 155055771704f8cbb5c176a4309b7dc30a50450c <1fc9c1933959d2776a1ce7bf424251b8b5b586cd
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
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