In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix null deref on srq->rq.queue after resize failure A NULL pointer… (CVE-2025-68379)
A null pointer dereference vulnerability in the Linux kernel's RDMA rxe driver was resolved. The issue occurs when ibv_modify_srq() is called twice consecutively under certain error conditions, leading to a null dereference and kernel crash. This happens because a failed resize sets srq->rq.queue to NULL, and the subsequent call dereferences this null pointer. The vulnerability could cause denial of service due to kernel crashes.
AI Analysis
Technical Summary
CVE-2025-68379 is a vulnerability in the Linux kernel's RDMA rxe driver where a null pointer dereference occurs in rxe_srq_chk_attr() when ibv_modify_srq() is invoked twice in succession under specific error conditions. The first call may fail in rxe_queue_resize(), causing srq->rq.queue to be set to NULL. The second call then attempts to access srq->rq.queue->buf->index_mask, triggering a null pointer dereference and kernel crash. This vulnerability leads to denial of service by crashing the kernel.
Potential Impact
The vulnerability allows an attacker with local privileges to cause a kernel crash (denial of service) by triggering a null pointer dereference in the RDMA rxe driver. This impacts system availability but does not indicate direct confidentiality or integrity compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel vulnerability, monitor official Linux kernel security advisories for patches addressing CVE-2025-68379 and apply updates promptly once available.
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix null deref on srq->rq.queue after resize failure A NULL pointer… (CVE-2025-68379)
Description
A null pointer dereference vulnerability in the Linux kernel's RDMA rxe driver was resolved. The issue occurs when ibv_modify_srq() is called twice consecutively under certain error conditions, leading to a null dereference and kernel crash. This happens because a failed resize sets srq->rq.queue to NULL, and the subsequent call dereferences this null pointer. The vulnerability could cause denial of service due to kernel crashes.
CVSS v3.1
Score 7.8high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-68379 is a vulnerability in the Linux kernel's RDMA rxe driver where a null pointer dereference occurs in rxe_srq_chk_attr() when ibv_modify_srq() is invoked twice in succession under specific error conditions. The first call may fail in rxe_queue_resize(), causing srq->rq.queue to be set to NULL. The second call then attempts to access srq->rq.queue->buf->index_mask, triggering a null pointer dereference and kernel crash. This vulnerability leads to denial of service by crashing the kernel.
Potential Impact
The vulnerability allows an attacker with local privileges to cause a kernel crash (denial of service) by triggering a null pointer dereference in the RDMA rxe driver. This impacts system availability but does not indicate direct confidentiality or integrity compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel vulnerability, monitor official Linux kernel security advisories for patches addressing CVE-2025-68379 and apply updates promptly once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-57j5-pvpx-j5rm
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68379"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d39c2644c7f8477fc1
Added to database: 07/30/2026, 15:50:43 UTC
Last enriched: 07/30/2026, 18:41:17 UTC
Last updated: 09/10/2026, 19:38:48 UTC
Views: 8
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