{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: ubifs_symlink: Fix memleak of inode->i_link in error path\n\nFor error handling path in ubifs_symlink(), inode will be marked as\nbad first, then iput() is invoked. If inode->i_link is initialized by\nfscrypt_encrypt_symlink() in encryption scenario, inode->i_link won't\nbe freed by callchain ubifs_free_inode -> fscrypt_free_inode in error\nhandling path, because make_bad_inode() has changed 'inode->i_mode' as\n'S_IFREG'.\nFollowing kmemleak is easy to be reproduced by injecting error in\nubifs_jnl_update() when doing symlink in encryption scenario:\n unreferenced object 0xffff888103da3d98 (size 8):\n  comm \"ln\", pid 1692, jiffies 4294914701 (age 12.045s)\n  backtrace:\n   kmemdup+0x32/0x70\n   __fscrypt_encrypt_symlink+0xed/0x1c0\n   ubifs_symlink+0x210/0x300 [ubifs]\n   vfs_symlink+0x216/0x360\n   do_symlinkat+0x11a/0x190\n   do_syscall_64+0x3b/0xe0\nThere are two ways fixing it:\n 1. Remove make_bad_inode() in error handling path. We can do that\n    because ubifs_evict_inode() will do same processes for good\n    symlink inode and bad symlink inode, for inode->i_nlink checking\n    is before is_bad_inode().\n 2. Free inode->i_link before marking inode bad.\nMethod 2 is picked, it has less influence, personally, I think."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/ubifs/dir.c"
               ],
               "versions": [
                  {
                     "version": "2c58d548f570",
                     "lessThan": "3faea7810e2b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2c58d548f570",
                     "lessThan": "62b5ae00c2b8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2c58d548f570",
                     "lessThan": "6379b44cdcd6",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/ubifs/dir.c"
               ],
               "versions": [
                  {
                     "version": "5.2",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.2",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.55",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.3",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/3faea7810e2b3e9a9a92ef42d7e5feaeb8ff7133"
            },
            {
               "url": "https://git.kernel.org/stable/c/62b5ae00c2b835639002ce898ccb5d82c51073ae"
            },
            {
               "url": "https://git.kernel.org/stable/c/6379b44cdcd67f5f5d986b73953e99700591edfa"
            }
         ],
         "title": "ubifs: ubifs_symlink: Fix memleak of inode->i_link in error path",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26972",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}