{"id":"CVE-2026-90308","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold QP references for AE and CM processing\n\nAE QP fatal events and iWARP CM paths load QPs from dev->qp_xa\nand then use or reference them outside the xarra…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold QP references for AE and CM processing\n\nAE QP fatal events and iWARP CM paths load QPs from dev->qp_xa\nand then use or reference them outside the xarra…","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 >= 155055771704f8cbb5c176a4309b7dc30a50450c < 6e32f84b63c054e09392153125d7202abab2d14b","Linux >= 155055771704f8cbb5c176a4309b7dc30a50450c < ec987c0654651036dad6a42f7fa2a6d7c16a3687","Linux >= 155055771704f8cbb5c176a4309b7dc30a50450c < c92686867638cda954fdb2bdbac8a75e3aa6eaae","Linux >= 155055771704f8cbb5c176a4309b7dc30a50450c < a52eeff32024f190b3bdc99088c7becccd4fa60b","Linux 6.0"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:52.833","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90308","references":[{"url":"https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00163,"epssPercentile":0.05945,"ingestedAt":"2026-09-17T16:21:47.827Z","slug":"CVE-2026-90308","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold QP references for AE and CM processing\n\nAE QP fatal events and iWARP CM paths load QPs from dev->qp_xa\nand then use or reference them outside the xarray lock.\nerdma_destroy_qp() can drop the destroy-path reference and free QP\nresources while such a lookup is in flight.\n\nAdd erdma_qp_get_by_qpn() to acquire a kref under the xarray\nlock with kref_get_unless_zero(). Remove the QP from the xarray\nbefore dropping the destroy-path reference so no new lookup can acquire\nit while destruction waits for existing users.\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":207241,"id":"CVE-2026-90308","ts":1789757339837,"field":"cvss","old":null,"new":"7.8"},{"seq":207240,"id":"CVE-2026-90308","ts":1789757339837,"field":"severity","old":"none","new":"high"}]}