{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52908","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.366Z","datePublished":"2026-06-19T14:00:35.971Z","dateUpdated":"2026-06-28T06:36:24.208Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:36:24.208Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: During rereg_mr ensure that REREG_ACCESS is compatible\n\nIf IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be\nre-evaluated to ensure it is properly pinned as RW. Since the umem is\nhidden inside each driver's mr struct add a ib_umem_check_rereg() function\nthat each driver has to call before processing IB_MR_REREG_ACCESS.\n\nmlx4 has to retain its duplicate ib_access_writable check because it\nimplements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items\nin place sequentially while the MR is live, so it will continue to not\nsupport this combination."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/core/umem.c","drivers/infiniband/hw/hns/hns_roce_mr.c","drivers/infiniband/hw/irdma/verbs.c","drivers/infiniband/hw/mlx4/mr.c","drivers/infiniband/hw/mlx5/mr.c","drivers/infiniband/sw/rxe/rxe_verbs.c","include/rdma/ib_umem.h"],"versions":[{"version":"b40656aa7d559adc1fe689396dc58b92a9a27286","lessThan":"09dc18894148381d3bfc550083b1236043870dce","status":"affected","versionType":"git"},{"version":"b40656aa7d559adc1fe689396dc58b92a9a27286","lessThan":"eba5df21eda0fe7418efbea2f799f8ea1b8ca94c","status":"affected","versionType":"git"},{"version":"b40656aa7d559adc1fe689396dc58b92a9a27286","lessThan":"2904e985a2917b5dac65df82733065e78a65fc9d","status":"affected","versionType":"git"},{"version":"b40656aa7d559adc1fe689396dc58b92a9a27286","lessThan":"50334a05a950840b39a1ce3d2a173b4183db9b3e","status":"affected","versionType":"git"},{"version":"b40656aa7d559adc1fe689396dc58b92a9a27286","lessThan":"badad6fad60def1b9805559dd81dbab3d97b82aa","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/core/umem.c","drivers/infiniband/hw/hns/hns_roce_mr.c","drivers/infiniband/hw/irdma/verbs.c","drivers/infiniband/hw/mlx4/mr.c","drivers/infiniband/hw/mlx5/mr.c","drivers/infiniband/sw/rxe/rxe_verbs.c","include/rdma/ib_umem.h"],"versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.94","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.36","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.13","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/09dc18894148381d3bfc550083b1236043870dce"},{"url":"https://git.kernel.org/stable/c/eba5df21eda0fe7418efbea2f799f8ea1b8ca94c"},{"url":"https://git.kernel.org/stable/c/2904e985a2917b5dac65df82733065e78a65fc9d"},{"url":"https://git.kernel.org/stable/c/50334a05a950840b39a1ce3d2a173b4183db9b3e"},{"url":"https://git.kernel.org/stable/c/badad6fad60def1b9805559dd81dbab3d97b82aa"}],"title":"RDMA: During rereg_mr ensure that REREG_ACCESS is compatible","x_generator":{"engine":"bippy-1.2.0"}}}}