fkie_cve-2024-47733
Vulnerability from fkie_nvd
Published
2024-10-21 13:15
Modified
2024-10-23 17:11
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: Delete subtree of 'fs/netfs' when netfs module exits In netfs_init() or fscache_proc_init(), we create dentry under 'fs/netfs', but in netfs_exit(), we only delete the proc entry of 'fs/netfs' without deleting its subtree. This triggers the following WARNING: ================================================================== remove_proc_entry: removing non-empty directory 'fs/netfs', leaking at least 'requests' WARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0 Modules linked in: netfs(-) CPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860 RIP: 0010:remove_proc_entry+0x160/0x1c0 Call Trace: <TASK> netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ================================================================== Therefore use remove_proc_subtree() instead of remove_proc_entry() to fix the above problem.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c58a9575e02c2b90a3180007d57105ceaa7c246Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/603f95cefbee06a31b03137b777f03e3c2163d72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a9eaf97d56625e55b31a7beb558e1ee185ca461Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "C22AF5AC-7F54-4360-A603-8A032CC9087A",
                     versionEndExcluding: "6.10.13",
                     versionStartIncluding: "6.8",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "AB755D26-97F4-43B6-8604-CD076811E181",
                     versionEndExcluding: "6.11.2",
                     versionStartIncluding: "6.11",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Delete subtree of 'fs/netfs' when netfs module exits\n\nIn netfs_init() or fscache_proc_init(), we create dentry under 'fs/netfs',\nbut in netfs_exit(), we only delete the proc entry of 'fs/netfs' without\ndeleting its subtree. This triggers the following WARNING:\n\n==================================================================\nremove_proc_entry: removing non-empty directory 'fs/netfs', leaking at least 'requests'\nWARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0\nModules linked in: netfs(-)\nCPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860\nRIP: 0010:remove_proc_entry+0x160/0x1c0\nCall Trace:\n <TASK>\n netfs_exit+0x12/0x620 [netfs]\n __do_sys_delete_module.isra.0+0x14c/0x2e0\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n==================================================================\n\nTherefore use remove_proc_subtree() instead of remove_proc_entry() to\nfix the above problem.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfs: Eliminar subárbol de 'fs/netfs' cuando el módulo netfs sale En netfs_init() o fscache_proc_init(), creamos una dentry bajo 'fs/netfs', pero en netfs_exit(), solo eliminamos la entrada de procedimiento de 'fs/netfs' sin eliminar su subárbol. Esto activa la siguiente ADVERTENCIA: == ... netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ======================================================================= Por lo tanto, utilice remove_proc_subtree() en lugar de remove_proc_entry() para solucionar el problema anterior.",
      },
   ],
   id: "CVE-2024-47733",
   lastModified: "2024-10-23T17:11:29.537",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 5.5,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "NONE",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-10-21T13:15:03.450",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/3c58a9575e02c2b90a3180007d57105ceaa7c246",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/603f95cefbee06a31b03137b777f03e3c2163d72",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/7a9eaf97d56625e55b31a7beb558e1ee185ca461",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-772",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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