{"id":"CVE-2026-43128","revision":null,"records":[{"revision":"c56f6cbfac254c00aa041d77e7f1e353","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43128","aliases":[],"title":"RDMA/umem: Fix double dma_buf_unpin in failure path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Fix double dma_buf_unpin in failure path\n\nIn ib_umem_dmabuf_get_pinned_with_dma_device(), the call to\nib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf\nis immediately unpinned but the umem_dmabuf->pinned flag is still\nset. Then, when ib_umem_release() is called, it calls\nib_umem_dmabuf_revoke() which will call dma_buf_unpin() again.\n\nFix this by removing the immediate unpin upon failure and just let\nthe ib_umem_release/revoke path handle it. This also ensures the\nproper unmap-unpin unwind ordering if the dmabuf_map_pages call\nhappened to fail due to dma_resv_wait_timeout (and therefore has\na non-NULL umem_dmabuf->sgt).","state":0,"publishedAt":"2026-05-06T11:27:17.474+00:00","modifiedAt":"2026-10-19T19:06:14.792+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/infiniband/core/umem_dmabuf.c\"\n ],\n \"versions\": [\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"70542b69abff34d24b11ae0bb200cc7a766d18df\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"b324327ff6f48d8065dca67eb3b91357e72726bd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"ba3bf0f1bf1d5d0404678485e872980532fcc2c4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"40126bcbefa79ea86672e05dae608596bab38319\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"1e4df4a21c5ac722df1099eee30cad9246c889b5\",\n \"lessThan\": \"104016eb671e19709721c1b0048dd912dc2e96be\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/infiniband/core/umem_dmabuf.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.16\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.16\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.165\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.128\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.75\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.16\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19.6\",\n \"lessThanOrEqual\": \"6.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/70542b69abff34d24b11ae0bb200cc7a766d18df","https://git.kernel.org/stable/c/b324327ff6f48d8065dca67eb3b91357e72726bd","https://git.kernel.org/stable/c/ba3bf0f1bf1d5d0404678485e872980532fcc2c4","https://git.kernel.org/stable/c/d3e32e2f3262f1b25d77c085ace38e2cc4ad75cf","https://git.kernel.org/stable/c/40126bcbefa79ea86672e05dae608596bab38319","https://git.kernel.org/stable/c/104016eb671e19709721c1b0048dd912dc2e96be"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43128","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43128","identifiers":["CVE-2026-43128"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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