cve-2022-48821
Vulnerability from cvelistv5
Published
2024-07-16 11:44
Modified
2024-12-19 08:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: avoid double fput() on failed usercopy If the copy back to userland fails for the FASTRPC_IOCTL_ALLOC_DMA_BUFF ioctl(), we shouldn't assume that 'buf->dmabuf' is still valid. In fact, dma_buf_fd() called fd_install() before, i.e. "consumed" one reference, leaving us with none. Calling dma_buf_put() will therefore put a reference we no longer own, leading to a valid file descritor table entry for an already released 'file' object which is a straight use-after-free. Simply avoid calling dma_buf_put() and rely on the process exit code to do the necessary cleanup, if needed, i.e. if the file descriptor is still valid.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d
Impacted products
Vendor Product Version
Linux Linux Version: 6cffd79504ce040f460831030d3069fa1c99bb71
Version: 6cffd79504ce040f460831030d3069fa1c99bb71
Version: 6cffd79504ce040f460831030d3069fa1c99bb71
Version: 6cffd79504ce040f460831030d3069fa1c99bb71
Version: 6cffd79504ce040f460831030d3069fa1c99bb71
 Create a notification for this product.
   Linux Linux Version: 5.1
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
   containers: {
      adp: [
         {
            providerMetadata: {
               dateUpdated: "2024-08-03T15:25:01.487Z",
               orgId: "af854a3a-2127-422b-91ae-364da2661108",
               shortName: "CVE",
            },
            references: [
               {
                  tags: [
                     "x_transferred",
                  ],
                  url: "https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215",
               },
               {
                  tags: [
                     "x_transferred",
                  ],
                  url: "https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5",
               },
               {
                  tags: [
                     "x_transferred",
                  ],
                  url: "https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d",
               },
               {
                  tags: [
                     "x_transferred",
                  ],
                  url: "https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc",
               },
               {
                  tags: [
                     "x_transferred",
                  ],
                  url: "https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34",
               },
            ],
            title: "CVE Program Container",
         },
         {
            metrics: [
               {
                  other: {
                     content: {
                        id: "CVE-2022-48821",
                        options: [
                           {
                              Exploitation: "none",
                           },
                           {
                              Automatable: "no",
                           },
                           {
                              "Technical Impact": "partial",
                           },
                        ],
                        role: "CISA Coordinator",
                        timestamp: "2024-09-10T16:57:59.542299Z",
                        version: "2.0.3",
                     },
                     type: "ssvc",
                  },
               },
            ],
            providerMetadata: {
               dateUpdated: "2024-09-11T17:34:12.159Z",
               orgId: "134c704f-9b21-4f2e-91b3-4a467353bcc0",
               shortName: "CISA-ADP",
            },
            title: "CISA ADP Vulnrichment",
         },
      ],
      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "drivers/misc/fastrpc.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     lessThan: "4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215",
                     status: "affected",
                     version: "6cffd79504ce040f460831030d3069fa1c99bb71",
                     versionType: "git",
                  },
                  {
                     lessThan: "a5ce7ee5fcc07583159f54ab4af5164de00148f5",
                     status: "affected",
                     version: "6cffd79504ce040f460831030d3069fa1c99bb71",
                     versionType: "git",
                  },
                  {
                     lessThan: "e4382d0a39f9a1e260d62fdc079ddae5293c037d",
                     status: "affected",
                     version: "6cffd79504ce040f460831030d3069fa1c99bb71",
                     versionType: "git",
                  },
                  {
                     lessThan: "76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc",
                     status: "affected",
                     version: "6cffd79504ce040f460831030d3069fa1c99bb71",
                     versionType: "git",
                  },
                  {
                     lessThan: "46963e2e0629cb31c96b1d47ddd89dc3d8990b34",
                     status: "affected",
                     version: "6cffd79504ce040f460831030d3069fa1c99bb71",
                     versionType: "git",
                  },
               ],
            },
            {
               defaultStatus: "affected",
               product: "Linux",
               programFiles: [
                  "drivers/misc/fastrpc.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     status: "affected",
                     version: "5.1",
                  },
                  {
                     lessThan: "5.1",
                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.4.*",
                     status: "unaffected",
                     version: "5.4.180",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.10.*",
                     status: "unaffected",
                     version: "5.10.101",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.15.*",
                     status: "unaffected",
                     version: "5.15.24",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.16.*",
                     status: "unaffected",
                     version: "5.16.10",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "5.17",
                     versionType: "original_commit_for_fix",
                  },
               ],
            },
         ],
         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.",
            },
         ],
         providerMetadata: {
            dateUpdated: "2024-12-19T08:08:22.751Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            shortName: "Linux",
         },
         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-5f407fcff5a0",
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2022-48821",
      datePublished: "2024-07-16T11:44:07.965Z",
      dateReserved: "2024-07-16T11:38:08.901Z",
      dateUpdated: "2024-12-19T08:08:22.751Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2022-48821\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:06.010\",\"lastModified\":\"2024-11-21T07:34:09.053\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: fastrpc: evitar doble fput() en copia de usuario fallida. Si la copia al área de usuario falla para FASTRPC_IOCTL_ALLOC_DMA_BUFF ioctl(), no debemos asumir que 'buf->dmabuf' aun es válido. De hecho, dma_buf_fd() llamó a fd_install() antes, es decir, \\\"consumió\\\" una referencia, dejándonos sin ninguna. Por lo tanto, llamar a dma_buf_put() colocará una referencia que ya no poseemos, lo que conducirá a una entrada válida en la tabla de descripción de archivos para un objeto 'archivo' ya publicado que es un use-after-free directo. Simplemente evite llamar a dma_buf_put() y confíe en el código de salida del proceso para realizar la limpieza necesaria, si es necesario, es decir, si el descriptor del archivo aún es válido.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
      vulnrichment: {
         containers: "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a5ce7ee5fcc07583159f54ab4af5164de00148f5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e4382d0a39f9a1e260d62fdc079ddae5293c037d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/46963e2e0629cb31c96b1d47ddd89dc3d8990b34\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T15:25:01.487Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48821\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T16:57:59.542299Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:21.325Z\"}}], \"cna\": {\"title\": \"misc: fastrpc: avoid double fput() on failed usercopy\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6cffd79504ce040f460831030d3069fa1c99bb71\", \"lessThan\": \"4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6cffd79504ce040f460831030d3069fa1c99bb71\", \"lessThan\": \"a5ce7ee5fcc07583159f54ab4af5164de00148f5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6cffd79504ce040f460831030d3069fa1c99bb71\", \"lessThan\": \"e4382d0a39f9a1e260d62fdc079ddae5293c037d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6cffd79504ce040f460831030d3069fa1c99bb71\", \"lessThan\": \"76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6cffd79504ce040f460831030d3069fa1c99bb71\", \"lessThan\": \"46963e2e0629cb31c96b1d47ddd89dc3d8990b34\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/misc/fastrpc.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.1\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.1\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.180\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.101\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/misc/fastrpc.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:08:22.751Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2022-48821\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:08:22.751Z\", \"dateReserved\": \"2024-07-16T11:38:08.901Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T11:44:07.965Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


Log in or create an account to share your comment.

Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.