{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38595","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:24.028Z","datePublished":"2025-08-19T17:03:25.527Z","dateUpdated":"2026-05-11T21:31:17.468Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:31:17.468Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen: fix UAF in dmabuf_exp_from_pages()\n\n[dma_buf_fd() fixes; no preferences regarding the tree it goes through -\nup to xen folks]\n\nAs soon as we'd inserted a file reference into descriptor table, another\nthread could close it.  That's fine for the case when all we are doing is\nreturning that descriptor to userland (it's a race, but it's a userland\nrace and there's nothing the kernel can do about it).  However, if we\nfollow fd_install() with any kind of access to objects that would be\ndestroyed on close (be it the struct file itself or anything destroyed\nby its ->release()), we have a UAF.\n\ndma_buf_fd() is a combination of reserving a descriptor and fd_install().\ngntdev dmabuf_exp_from_pages() calls it and then proceeds to access the\nobjects destroyed on close - starting with gntdev_dmabuf itself.\n\nFix that by doing reserving descriptor before anything else and do\nfd_install() only when everything had been set up."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/xen/gntdev-dmabuf.c"],"versions":[{"version":"a240d6e42e28c34fdc34b3a98ca838a31c939901","lessThan":"e5907885260401bba300d4d18d79875c05b82651","status":"affected","versionType":"git"},{"version":"a240d6e42e28c34fdc34b3a98ca838a31c939901","lessThan":"3edfd2353f301bfffd5ee41066e37320a59ccc2d","status":"affected","versionType":"git"},{"version":"a240d6e42e28c34fdc34b3a98ca838a31c939901","lessThan":"d59d49af4aeed9a81e673e37c26c6a3bacf1a181","status":"affected","versionType":"git"},{"version":"a240d6e42e28c34fdc34b3a98ca838a31c939901","lessThan":"532c8b51b3a8676cbf533a291f8156774f30ea87","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/xen/gntdev-dmabuf.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"6.12.42","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.15.10","lessThanOrEqual":"6.15.*","status":"unaffected","versionType":"semver"},{"version":"6.16.1","lessThanOrEqual":"6.16.*","status":"unaffected","versionType":"semver"},{"version":"6.17","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":"4.19","versionEndExcluding":"6.12.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.15.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.16.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e5907885260401bba300d4d18d79875c05b82651"},{"url":"https://git.kernel.org/stable/c/3edfd2353f301bfffd5ee41066e37320a59ccc2d"},{"url":"https://git.kernel.org/stable/c/d59d49af4aeed9a81e673e37c26c6a3bacf1a181"},{"url":"https://git.kernel.org/stable/c/532c8b51b3a8676cbf533a291f8156774f30ea87"}],"title":"xen: fix UAF in dmabuf_exp_from_pages()","x_generator":{"engine":"bippy-1.2.0"}}}}