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RDMA/core: Fix potential use after free in ib_destroy_srq_user()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix potential use after free in ib_destroy_srq_user() When accessing a SRQ via the netlink path the only synchronization mechanism for the said SRQ is rdma_restrack_get(). Currently, rdma_restrack_del() is invoked at the end of ib_destroy_srq_user(), which is too late, since by that point vendor-specific resources associated with the SRQ might already be freed. This can leave a short window where the SRQ remains accessible through restrack, leading to a potential use-after-free. Fix this by moving the rdma_restrack_begin_del() call to the start of ib_destroy_srq_user(), ensuring that the SRQ is removed from restrack before its internal resources are released. This guarantees that no new users hold references to a SRQ that is in the process of destruction. In addition, this change preserves the intended inverted order between create and destroy routines: resources are added to restrack at the end of successful creation, and hence shall be removed from the restrack first thing during the destruction flow, which keeps the lifecycle management consistent and predictable.

Announced Source revision 1
Original source ↗

CVE-2026-92510

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-92510

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "d3d0eabe6e39b024deb3e085e2d408d037e967c3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "9c704383529044c02122f85a2a9a42cbf14a07a6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "bedd7dee72588c838f5b67197ea8b387e7beb918",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "95c992c869df54a6a7061f5f3fb6400244f2af8f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "48f8a70e899fa4d9c8f00369f482f0382173ece9",
        "lessThan": "88244ecc71cc0b3ed200f5ef7ddea6686adfd730",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/infiniband/core/verbs.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/infiniband/core/verbs.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-92510

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#37759 · Revision 1
Added to Heist Feed
Publisher date
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