CVE-2026-74299 (GCVE-0-2026-74299)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:16
VLAI
Title
RDMA/core: Fix FRMR aging push to queue error flow
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix FRMR aging push to queue error flow Aging pools with pinned handles requires moving handles from the active queue to a non-empty inactive queue that might fail on new page allocation, we are currently not handling the fault and leaking any mkey that fails the push. Fix by Introducing push_queue_to_queue_locked() that fills the destination's partial tail page from the source and then splices the remaining source pages onto the destination, performing no allocation. Replace the per-handle move loop in age_pinned_pool() and the open-coded splice in pool_aging_work() with calls to the helper. As the helper cannot fail under memory pressure, removing a class of GFP_ATOMIC allocations under the pool lock and simplifying the error flow.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 020d189d16a62ed56115cce7e255459cf0eeb4e6 , < edf133d28fc43f7f8b0da43a8d5b93fdf8073d35 (git)
Affected: 020d189d16a62ed56115cce7e255459cf0eeb4e6 , < c6936506ed556ce3ccad36ab999baf2764dd7d25 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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        }
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    "datePublished": "2026-08-15T05:58:02.688Z",
    "dateReserved": "2026-08-15T05:44:03.882Z",
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    "state": "PUBLISHED"
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          {
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix FRMR aging push to queue error flow\n\nAging pools with pinned handles requires moving handles from the\nactive queue to a non-empty inactive queue that might fail on new page\nallocation, we are currently not handling the fault and leaking any mkey\nthat fails the push.\n\nFix by Introducing push_queue_to_queue_locked() that fills the\ndestination\u0027s partial tail page from the source and then splices the\nremaining source pages onto the destination, performing no allocation.\n\nReplace the per-handle move loop in age_pinned_pool() and the\nopen-coded splice in pool_aging_work() with calls to the helper.\nAs the helper cannot fail under memory pressure, removing a class of\nGFP_ATOMIC allocations under the pool lock and simplifying the error\nflow."
          }
        ],
        "id": "CVE-2026-74299",
        "lastModified": "2026-08-17T06:19:24.010",
        "metrics": {},
        "published": "2026-08-15T06:22:29.517",
        "references": [
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      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/core: Fix FRMR aging push to queue error flow",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74299.json",
      "version": "3"
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}



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