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RDMA/rxe: Fix double free in rxe_srq_from_init

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix double free in rxe_srq_from_init In rxe_srq_from_init(), the queue pointer 'q' is assigned to 'srq->rq.queue' before copying the SRQ number to user space. If copy_to_user() fails, the function calls rxe_queue_cleanup() to free the queue, but leaves the now-invalid pointer in 'srq->rq.queue'. The caller of rxe_srq_from_init() (rxe_create_srq) eventually calls rxe_srq_cleanup() upon receiving the error, which triggers a second rxe_queue_cleanup() on the same memory, leading to a double free. The call trace looks like this: kmem_cache_free+0x.../0x... rxe_queue_cleanup+0x1a/0x30 [rdma_rxe] rxe_srq_cleanup+0x42/0x60 [rdma_rxe] rxe_elem_release+0x31/0x70 [rdma_rxe] rxe_create_srq+0x12b/0x1a0 [rdma_rxe] ib_create_srq_user+0x9a/0x150 [ib_core] Fix this by moving 'srq->rq.queue = q' after copy_to_user.

Announced Source revision 1
Original source ↗

CVE-2026-45852

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-2026-45852

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": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "b98ab5494dbd48652561aa0b9c32f10500220745",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "d493e0bfc748a520c349d6c8791b262aa5ad2e4e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "9abff51163aa1bc275ec356f74fe976291860a7f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "26793db60925df1e88a29466813d586cbc190b8c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "ce6f8e007682f378279d4cf83b240f12d52c723b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "5c07aef09a121a4cd622a71eb0753a9e135c84a8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "26a9cfe12f4ffdeaa136f252478986fa5f397ddc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "aae0484e15f062ad2c2502e68e15dfb8b8f84608",
        "lessThan": "0beefd0e15d962f497aad750b2d5e9c3570b66d1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "350703fae672d4d649c3562c199eab5ec9dc7c79",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4.19.86",
        "lessThan": "4.20",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "drivers/infiniband/sw/rxe/rxe_srq.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.20"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.20",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.259",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.128",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.75",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.14",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.4",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/infiniband/sw/rxe/rxe_srq.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-45852

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40087 · Revision 1
Added to Heist Feed
Publisher date
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