{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48821", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-16T11:38:08.901Z", "datePublished": "2024-07-16T11:44:07.965Z", "dateUpdated": "2026-05-11T18:47:47.442Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:47:47.442Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: avoid double fput() on failed usercopy\n\nIf the copy back to userland fails for the FASTRPC_IOCTL_ALLOC_DMA_BUFF\nioctl(), we shouldn't assume that 'buf->dmabuf' is still valid. In fact,\ndma_buf_fd() called fd_install() before, i.e. \"consumed\" one reference,\nleaving us with none.\n\nCalling dma_buf_put() will therefore put a reference we no longer own,\nleading to a valid file descritor table entry for an already released\n'file' object which is a straight use-after-free.\n\nSimply avoid calling dma_buf_put() and rely on the process exit code to\ndo the necessary cleanup, if needed, i.e. if the file descriptor is\nstill valid." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/misc/fastrpc.c" ], "versions": [ { "version": "6cffd79504ce040f460831030d3069fa1c99bb71", "lessThan": "4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215", "status": "affected", "versionType": "git" }, { "version": "6cffd79504ce040f460831030d3069fa1c99bb71", "lessThan": "a5ce7ee5fcc07583159f54ab4af5164de00148f5", "status": "affected", "versionType": "git" }, { "version": "6cffd79504ce040f460831030d3069fa1c99bb71", "lessThan": "e4382d0a39f9a1e260d62fdc079ddae5293c037d", "status": "affected", "versionType": "git" }, { "version": "6cffd79504ce040f460831030d3069fa1c99bb71", "lessThan": "76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc", "status": "affected", "versionType": "git" }, { "version": "6cffd79504ce040f460831030d3069fa1c99bb71", "lessThan": "46963e2e0629cb31c96b1d47ddd89dc3d8990b34", "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/misc/fastrpc.c" ], "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.180", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.101", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.24", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.16.10", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17", "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": "5.1", "versionEndExcluding": "5.4.180" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.10.101" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.15.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.16.10" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.1", "versionEndExcluding": "5.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215" }, { "url": "https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5" }, { "url": "https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d" }, { "url": "https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc" }, { "url": "https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34" } ], "title": "misc: fastrpc: avoid double fput() on failed usercopy", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:25:01.487Z" }, "title": "CVE Program Container", "references": [ { "url": 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