{"id":"CVE-2026-92510","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_srq_user()\n\nWhen accessing a SRQ via the netlink path the only synchronization\nmechanism for the said SRQ is rdma_…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_srq_user()\n\nWhen accessing a SRQ via the netlink path the only synchronization\nmechanism for the said SRQ is rdma_…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9","Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < d3d0eabe6e39b024deb3e085e2d408d037e967c3","Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < 9c704383529044c02122f85a2a9a42cbf14a07a6","Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < bedd7dee72588c838f5b67197ea8b387e7beb918","Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < 95c992c869df54a6a7061f5f3fb6400244f2af8f","Linux >= 48f8a70e899fa4d9c8f00369f482f0382173ece9 < 88244ecc71cc0b3ed200f5ef7ddea6686adfd730","Linux 5.13"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:18:13.660","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92510","references":[{"url":"https://git.kernel.org/stable/c/88244ecc71cc0b3ed200f5ef7ddea6686adfd730","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/95c992c869df54a6a7061f5f3fb6400244f2af8f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9c704383529044c02122f85a2a9a42cbf14a07a6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bedd7dee72588c838f5b67197ea8b387e7beb918","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d3d0eabe6e39b024deb3e085e2d408d037e967c3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00126,"epssPercentile":0.02592,"ingestedAt":"2026-09-17T16:21:47.780Z","slug":"CVE-2026-92510","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_srq_user()\n\nWhen accessing a SRQ via the netlink path the only synchronization\nmechanism for the said SRQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_srq_user(), which is too late, since by that point\nvendor-specific resources associated with the SRQ might already be\nfreed. This can leave a short window where the SRQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_destroy_srq_user(), ensuring that the SRQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a SRQ that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207339,"id":"CVE-2026-92510","ts":1789757340991,"field":"cvss","old":null,"new":"7.8"},{"seq":207338,"id":"CVE-2026-92510","ts":1789757340991,"field":"severity","old":"none","new":"high"}]}