{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-38722", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.033Z", "datePublished": "2025-09-04T15:33:15.641Z", "dateUpdated": "2025-09-29T05:56:47.269Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-29T05:56:47.269Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhabanalabs: fix UAF in export_dmabuf()\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().\nhabanalabs export_dmabuf() calls it and then proceeds to access the\nobjects destroyed on close. In particular, it grabs an extra reference to\nanother struct file that will be dropped as part of ->release() for ours;\nthat \"will be\" is actually \"might have already been\".\n\nFix that by reserving descriptor before anything else and do fd_install()\nonly when everything had been set up. As a side benefit, we no longer\nhave the failure exit with file already created, but reference to\nunderlying file (as well as ->dmabuf_export_cnt, etc.) not grabbed yet;\nunlike dma_buf_fd(), fd_install() can't fail."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/accel/habanalabs/common/memory.c"], "versions": [{"version": "db1a8dd916aac986871f6b873a3aefad906f383a", "lessThan": "c07886761fd6251db6938d4e747002e3d150d231", "status": "affected", "versionType": "git"}, {"version": "db1a8dd916aac986871f6b873a3aefad906f383a", "lessThan": "40deceb38f9db759772d1c289c28fd2a543f57fc", "status": "affected", "versionType": "git"}, {"version": "db1a8dd916aac986871f6b873a3aefad906f383a", "lessThan": "55c232d7e0241f1d5120b595e7a9de24c75ed3d8", "status": "affected", "versionType": "git"}, {"version": "db1a8dd916aac986871f6b873a3aefad906f383a", "lessThan": "33927f3d0ecdcff06326d6e4edb6166aed42811c", "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/accel/habanalabs/common/memory.c"], "versions": [{"version": "5.16", "status": "affected"}, {"version": "0", "lessThan": "5.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.2", "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": "5.16", "versionEndExcluding": "6.12.43"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c07886761fd6251db6938d4e747002e3d150d231"}, {"url": "https://git.kernel.org/stable/c/40deceb38f9db759772d1c289c28fd2a543f57fc"}, {"url": "https://git.kernel.org/stable/c/55c232d7e0241f1d5120b595e7a9de24c75ed3d8"}, {"url": "https://git.kernel.org/stable/c/33927f3d0ecdcff06326d6e4edb6166aed42811c"}], "title": "habanalabs: fix UAF in export_dmabuf()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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