CVE-2026-74377
- Source
- https://cve.org/CVERecord?id=CVE-2026-74377
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-74377.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-74377
- Downstream
- Published
- 2026-08-15T05:58:55Z
- Modified
- 2026-08-18T04:17:19Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path
For non-SRQ QPs, the responder reads WQE fields directly from the shared queue buffer mapped into userspace. This allows a malicious user to modify fields like num_sge or sge entries while the kernel is processing the WQE, leading to out-of-bounds reads in rxe_resp_check_length() and copy_data().
Introduce get_recv_wqe() that validates num_sge and copies the WQE to a kernel-local buffer before processing, matching the approach already used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is reused since SRQ and non-SRQ paths are mutually exclusive per QP.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74377.json" }- References
-
- https://git.kernel.org/stable/c/2e60378fb3c8b51c94103bb40014c4fe38fa5033
- https://git.kernel.org/stable/c/5420eebf3b3c162bfaf965f30e61cd1d689e5732
- https://git.kernel.org/stable/c/9fa785137303f7109c23dea779b8dedc67c9b531
- https://git.kernel.org/stable/c/a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b
- https://git.kernel.org/stable/c/d6ab440240a04b8737ee4c7bb21af9182e451733
- https://git.kernel.org/stable/c/fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74377.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74377
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced8700e3e7c4857d28ebaa824509934556da0b3e76Fixed2e60378fb3c8b51c94103bb40014c4fe38fa5033Fixedfc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78Fixed9fa785137303f7109c23dea779b8dedc67c9b531Fixed5420eebf3b3c162bfaf965f30e61cd1d689e5732Fixeda211b7904aed365e4e4f08a48ec6e6dd1ea7b16bFixedd6ab440240a04b8737ee4c7bb21af9182e451733
Linux / Kernel
Package
- Name
- Kernel