CVE-2026-90309
- Source
- https://cve.org/CVERecord?id=CVE-2026-90309
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90309.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-90309
- Downstream
- Published
- 2026-09-17T16:08:30Z
- Modified
- 2026-09-19T03:47:25Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- RDMA/erdma: Hold CQ references when processing EQ events
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90309.json" }- References
-
- https://git.kernel.org/stable/c/05b8ca493dd02319bca93c640b259c2ba51ef321
- https://git.kernel.org/stable/c/1fc9c1933959d2776a1ce7bf424251b8b5b586cd
- https://git.kernel.org/stable/c/4545f355654d044d35a31cd01cc46f491a8a7c36
- https://git.kernel.org/stable/c/610ef81797bb4f709e8675c1d8d093bb9ccdcbd8
- https://git.kernel.org/stable/c/98df2aee1459ee1c62c70cbe9b370d2a532aea36
- https://git.kernel.org/stable/c/c0a83f29a24c7e7f8516630848ef6db4c174deed
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90309.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-90309
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced155055771704f8cbb5c176a4309b7dc30a50450cFixed610ef81797bb4f709e8675c1d8d093bb9ccdcbd8Fixedc0a83f29a24c7e7f8516630848ef6db4c174deedFixed05b8ca493dd02319bca93c640b259c2ba51ef321Fixed1fc9c1933959d2776a1ce7bf424251b8b5b586cdFixed4545f355654d044d35a31cd01cc46f491a8a7c36Fixed98df2aee1459ee1c62c70cbe9b370d2a532aea36
Linux / Kernel
Package
- Name
- Kernel