CVE-2026-52908 (GCVE-0-2026-52908)
Vulnerability from cvelistv5
Published
2026-06-19 14:00
Modified
2026-10-19 19:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_REREG_ACCESS. mlx4 has to retain its duplicate ib_access_writable check because it implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items in place sequentially while the MR is live, so it will continue to not support this combination.
References
Impacted products
Vendor Product Version
Linux Linux Version: b40656aa7d559adc1fe689396dc58b92a9a27286
Version: b40656aa7d559adc1fe689396dc58b92a9a27286
Version: b40656aa7d559adc1fe689396dc58b92a9a27286
Version: b40656aa7d559adc1fe689396dc58b92a9a27286
Version: b40656aa7d559adc1fe689396dc58b92a9a27286
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