CVE-2022-50346 (GCVE-0-2022-50346)

Vulnerability from cvelistv5 – Published: 2025-09-16 16:11 – Updated: 2026-05-11 19:17
VLAI
Title
ext4: init quota for 'old.inode' in 'ext4_rename'
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: init quota for 'old.inode' in 'ext4_rename' Syzbot found the following issue: ext4_parse_param: s_want_extra_isize=128 ext4_inode_info_init: s_want_extra_isize=32 ext4_rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828 new.inode=ffff88823869d7e8 new.dir=ffff888238699828 __ext4_mark_inode_dirty: inode=ffff888238699828 ea_isize=32 want_ea_size=128 __ext4_mark_inode_dirty: inode=ffff88823869a2c8 ea_isize=32 want_ea_size=128 ext4_xattr_block_set: inode=ffff88823869a2c8 ------------[ cut here ]------------ WARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980 Modules linked in: RIP: 0010:ext4_xattr_block_set.cold+0x22/0x980 RSP: 0018:ffff888227d3f3b0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff88823007a000 RCX: 0000000000000000 RDX: 0000000000000a03 RSI: 0000000000000040 RDI: ffff888230078178 RBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e R10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000 R13: ffff88823869a2c8 R14: ffff8881012e0460 R15: dffffc0000000000 FS: 00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f350a6ed6a0 CR3: 0000000237456000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? ext4_xattr_set_entry+0x3b7/0x2320 ? ext4_xattr_block_set+0x0/0x2020 ? ext4_xattr_set_entry+0x0/0x2320 ? ext4_xattr_check_entries+0x77/0x310 ? ext4_xattr_ibody_set+0x23b/0x340 ext4_xattr_move_to_block+0x594/0x720 ext4_expand_extra_isize_ea+0x59a/0x10f0 __ext4_expand_extra_isize+0x278/0x3f0 __ext4_mark_inode_dirty.cold+0x347/0x410 ext4_rename+0xed3/0x174f vfs_rename+0x13a7/0x2510 do_renameat2+0x55d/0x920 __x64_sys_rename+0x7d/0xb0 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc As 'ext4_rename' will modify 'old.inode' ctime and mark inode dirty, which may trigger expand 'extra_isize' and allocate block. If inode didn't init quota will lead to warning. To solve above issue, init 'old.inode' firstly in 'ext4_rename'.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:20 UTC
CWE
  • CWE-908 - Use of Uninitialized Resource
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 67f6d5a4043f3db0c6bb0e14a0d97a7be8bfb8b5 (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 33fd7031d634f3b46e59f61adfbb0ea9fe514fef (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 7dfb8259f66faafa68d23a261b284d2c2c67649b (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < f263e349bacc2f303526dcfa61c4bc50132418b1 (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 84a2f2ed49d6a4d92b354219077434c57d334620 (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < def7a39091e60e1c4a2f623629082a00092602be (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 135ba9146f4d38abed48a540ef8a8770ff0bd34f (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < 13271fbbe85d73a7c47058f56a52f2a7f00d6e39 (git)
Affected: 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e , < fae381a3d79bb94aa2eb752170d47458d778b797 (git)
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Linux Linux Affected: 2.6.23
Unaffected: 0 , < 2.6.23 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.18 , ≤ 6.0.* (semver)
Unaffected: 6.1.4 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: init quota for \u0027old.inode\u0027 in \u0027ext4_rename\u0027\n\nSyzbot found the following issue:\next4_parse_param: s_want_extra_isize=128\next4_inode_info_init: s_want_extra_isize=32\next4_rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828 new.inode=ffff88823869d7e8 new.dir=ffff888238699828\n__ext4_mark_inode_dirty: inode=ffff888238699828 ea_isize=32 want_ea_size=128\n__ext4_mark_inode_dirty: inode=ffff88823869a2c8 ea_isize=32 want_ea_size=128\next4_xattr_block_set: inode=ffff88823869a2c8\n------------[ cut here ]------------\nWARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980\nModules linked in:\nRIP: 0010:ext4_xattr_block_set.cold+0x22/0x980\nRSP: 0018:ffff888227d3f3b0 EFLAGS: 00010202\nRAX: 0000000000000001 RBX: ffff88823007a000 RCX: 0000000000000000\nRDX: 0000000000000a03 RSI: 0000000000000040 RDI: ffff888230078178\nRBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e\nR10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000\nR13: ffff88823869a2c8 R14: ffff8881012e0460 R15: dffffc0000000000\nFS:  00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f350a6ed6a0 CR3: 0000000237456000 CR4: 00000000000006e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? ext4_xattr_set_entry+0x3b7/0x2320\n ? ext4_xattr_block_set+0x0/0x2020\n ? ext4_xattr_set_entry+0x0/0x2320\n ? ext4_xattr_check_entries+0x77/0x310\n ? ext4_xattr_ibody_set+0x23b/0x340\n ext4_xattr_move_to_block+0x594/0x720\n ext4_expand_extra_isize_ea+0x59a/0x10f0\n __ext4_expand_extra_isize+0x278/0x3f0\n __ext4_mark_inode_dirty.cold+0x347/0x410\n ext4_rename+0xed3/0x174f\n vfs_rename+0x13a7/0x2510\n do_renameat2+0x55d/0x920\n __x64_sys_rename+0x7d/0xb0\n do_syscall_64+0x3b/0xa0\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nAs \u0027ext4_rename\u0027 will modify \u0027old.inode\u0027 ctime and mark inode dirty,\nwhich may trigger expand \u0027extra_isize\u0027 and allocate block. If inode\ndidn\u0027t init quota will lead to warning.  To solve above issue, init\n\u0027old.inode\u0027 firstly in \u0027ext4_rename\u0027."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/67f6d5a4043f3db0c6bb0e14a0d97a7be8bfb8b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/33fd7031d634f3b46e59f61adfbb0ea9fe514fef"
        },
        {
          "url": "https://git.kernel.org/stable/c/7dfb8259f66faafa68d23a261b284d2c2c67649b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f263e349bacc2f303526dcfa61c4bc50132418b1"
        },
        {
          "url": "https://git.kernel.org/stable/c/84a2f2ed49d6a4d92b354219077434c57d334620"
        },
        {
          "url": "https://git.kernel.org/stable/c/def7a39091e60e1c4a2f623629082a00092602be"
        },
        {
          "url": "https://git.kernel.org/stable/c/135ba9146f4d38abed48a540ef8a8770ff0bd34f"
        },
        {
          "url": "https://git.kernel.org/stable/c/13271fbbe85d73a7c47058f56a52f2a7f00d6e39"
        },
        {
          "url": "https://git.kernel.org/stable/c/fae381a3d79bb94aa2eb752170d47458d778b797"
        }
      ],
      "title": "ext4: init quota for \u0027old.inode\u0027 in \u0027ext4_rename\u0027",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50346",
    "datePublished": "2025-09-16T16:11:39.179Z",
    "dateReserved": "2025-09-16T16:03:27.882Z",
    "dateUpdated": "2026-05-11T19:17:45.342Z",
    "state": "PUBLISHED"
  },
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: init quota for \u0027old.inode\u0027 in \u0027ext4_rename\u0027\n\nSyzbot found the following issue:\next4_parse_param: s_want_extra_isize=128\next4_inode_info_init: s_want_extra_isize=32\next4_rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828 new.inode=ffff88823869d7e8 new.dir=ffff888238699828\n__ext4_mark_inode_dirty: inode=ffff888238699828 ea_isize=32 want_ea_size=128\n__ext4_mark_inode_dirty: inode=ffff88823869a2c8 ea_isize=32 want_ea_size=128\next4_xattr_block_set: inode=ffff88823869a2c8\n------------[ cut here ]------------\nWARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980\nModules linked in:\nRIP: 0010:ext4_xattr_block_set.cold+0x22/0x980\nRSP: 0018:ffff888227d3f3b0 EFLAGS: 00010202\nRAX: 0000000000000001 RBX: ffff88823007a000 RCX: 0000000000000000\nRDX: 0000000000000a03 RSI: 0000000000000040 RDI: ffff888230078178\nRBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e\nR10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000\nR13: ffff88823869a2c8 R14: ffff8881012e0460 R15: dffffc0000000000\nFS:  00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f350a6ed6a0 CR3: 0000000237456000 CR4: 00000000000006e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? ext4_xattr_set_entry+0x3b7/0x2320\n ? ext4_xattr_block_set+0x0/0x2020\n ? ext4_xattr_set_entry+0x0/0x2320\n ? ext4_xattr_check_entries+0x77/0x310\n ? ext4_xattr_ibody_set+0x23b/0x340\n ext4_xattr_move_to_block+0x594/0x720\n ext4_expand_extra_isize_ea+0x59a/0x10f0\n __ext4_expand_extra_isize+0x278/0x3f0\n __ext4_mark_inode_dirty.cold+0x347/0x410\n ext4_rename+0xed3/0x174f\n vfs_rename+0x13a7/0x2510\n do_renameat2+0x55d/0x920\n __x64_sys_rename+0x7d/0xb0\n do_syscall_64+0x3b/0xa0\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nAs \u0027ext4_rename\u0027 will modify \u0027old.inode\u0027 ctime and mark inode dirty,\nwhich may trigger expand \u0027extra_isize\u0027 and allocate block. If inode\ndidn\u0027t init quota will lead to warning.  To solve above issue, init\n\u0027old.inode\u0027 firstly in \u0027ext4_rename\u0027."
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            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: init quota for \u0027old.inode\u0027 in \u0027ext4_rename\u0027\n\nSyzbot found the following issue:\next4_parse_param: s_want_extra_isize=128\next4_inode_info_init: s_want_extra_isize=32\next4_rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828 new.inode=ffff88823869d7e8 new.dir=ffff888238699828\n__ext4_mark_inode_dirty: inode=ffff888238699828 ea_isize=32 want_ea_size=128\n__ext4_mark_inode_dirty: inode=ffff88823869a2c8 ea_isize=32 want_ea_size=128\next4_xattr_block_set: inode=ffff88823869a2c8\n------------[ cut here ]------------\nWARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980\nModules linked in:\nRIP: 0010:ext4_xattr_block_set.cold+0x22/0x980\nRSP: 0018:ffff888227d3f3b0 EFLAGS: 00010202\nRAX: 0000000000000001 RBX: ffff88823007a000 RCX: 0000000000000000\nRDX: 0000000000000a03 RSI: 0000000000000040 RDI: ffff888230078178\nRBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e\nR10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000\nR13: ffff88823869a2c8 R14: ffff8881012e0460 R15: dffffc0000000000\nFS:  00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f350a6ed6a0 CR3: 0000000237456000 CR4: 00000000000006e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? ext4_xattr_set_entry+0x3b7/0x2320\n ? ext4_xattr_block_set+0x0/0x2020\n ? ext4_xattr_set_entry+0x0/0x2320\n ? ext4_xattr_check_entries+0x77/0x310\n ? ext4_xattr_ibody_set+0x23b/0x340\n ext4_xattr_move_to_block+0x594/0x720\n ext4_expand_extra_isize_ea+0x59a/0x10f0\n __ext4_expand_extra_isize+0x278/0x3f0\n __ext4_mark_inode_dirty.cold+0x347/0x410\n ext4_rename+0xed3/0x174f\n vfs_rename+0x13a7/0x2510\n do_renameat2+0x55d/0x920\n __x64_sys_rename+0x7d/0xb0\n do_syscall_64+0x3b/0xa0\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nAs \u0027ext4_rename\u0027 will modify \u0027old.inode\u0027 ctime and mark inode dirty,\nwhich may trigger expand \u0027extra_isize\u0027 and allocate block. If inode\ndidn\u0027t init quota will lead to warning.  To solve above issue, init\n\u0027old.inode\u0027 firstly in \u0027ext4_rename\u0027."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-12-23T13:29:01.356Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/67f6d5a4043f3db0c6bb0e14a0d97a7be8bfb8b5"
            },
            {
              "url": "https://git.kernel.org/stable/c/33fd7031d634f3b46e59f61adfbb0ea9fe514fef"
            },
            {
              "url": "https://git.kernel.org/stable/c/7dfb8259f66faafa68d23a261b284d2c2c67649b"
            },
            {
              "url": "https://git.kernel.org/stable/c/f263e349bacc2f303526dcfa61c4bc50132418b1"
            },
            {
              "url": "https://git.kernel.org/stable/c/84a2f2ed49d6a4d92b354219077434c57d334620"
            },
            {
              "url": "https://git.kernel.org/stable/c/def7a39091e60e1c4a2f623629082a00092602be"
            },
            {
              "url": "https://git.kernel.org/stable/c/135ba9146f4d38abed48a540ef8a8770ff0bd34f"
            },
            {
              "url": "https://git.kernel.org/stable/c/13271fbbe85d73a7c47058f56a52f2a7f00d6e39"
            },
            {
              "url": "https://git.kernel.org/stable/c/fae381a3d79bb94aa2eb752170d47458d778b797"
            }
          ],
          "title": "ext4: init quota for \u0027old.inode\u0027 in \u0027ext4_rename\u0027",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-50346",
        "datePublished": "2025-09-16T16:11:39.179Z",
        "dateReserved": "2025-09-16T16:03:27.882Z",
        "dateUpdated": "2026-01-14T18:22:58.321Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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