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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-98367

RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Clear association under lock if siw_qp_modify fails in siw_accept We need to clear cep before release state_lock as siw_qp_llp_close and siw_qp_modify->siw_qp_llp_close did. Otherwise if siw_qp_modify() fails in siw_accept(), the QP's state_lock is released before the error path cleanup. A concurrent ibv_modify_qp() transitioning the QP to ERROR can race in this window: siw_accept() ibv_modify_qp(ERROR) ---------------------- ---------------------- siw_qp_modify() fails up_write(&qp->state_lock) down_write(&qp->state_lock) nextstate_from_idle(): if (qp->cep) siw_cep_put(qp->cep) <- frees cep qp->cep = NULL goto error cep->qp = NULL <- UAF Clear qp->cep and drop the association reference taken by siw_cep_get(), all under the write lock held from the initial down_write(&qp->state_lock). Thread B therefore sees qp->cep == NULL, skips its own put, and cannot free the cep before siw_accept() is done with it.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < f11e09fe2fc3a11ccdf8f932b68181b0bb1d2078affected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < e3f039082856adab7e195dea1af45d93dd6a3f1caffected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < ad50d19f3d1ce052b3a146143581e930a1efb33eaffected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < 030306bbb9273af80f14d7af20129661964cd9a7affected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < df2584750314336edcbcc21fb388e04b260f35b7affected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < 9dcc0f4e488b70cff81e0e5717a498c929cf5de3affected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < bfdc744bf20ae4c3ef2e470298de5237c5c9a13caffected
  • 6c52fdc244b5ccc468006fd65a504d4ee33743c7 to < 32cd87f54dd1070020e664ccb0312a9f0fea79b4affected

Linux Linux

Default version status: affected

  • 5.3affected
  • 0 to < 5.3unaffected
  • 5.10.271 to ≤ 5.10.*unaffected
  • 5.15.222 to ≤ 5.15.*unaffected
  • 6.1.189 to ≤ 6.1.*unaffected
  • 6.6.158 to ≤ 6.6.*unaffected
  • 6.12.112 to ≤ 6.12.*unaffected
  • 6.18.54 to ≤ 6.18.*unaffected
  • 7.2.8 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References