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nfsd: return -EINVAL when namelen is 0

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nfsd: return -EINVAL when namelen is 0 When we have a corrupted main.sqlite in /var/lib/nfs/nfsdcld/, it may result in namelen being 0, which will cause memdup_user() to return ZERO_SIZE_PTR. When we access the name.data that has been assigned the value of ZERO_SIZE_PTR in nfs4_client_to_reclaim(), null pointer dereference is triggered. [ T1205] ================================================================== [ T1205] BUG: KASAN: null-ptr-deref in nfs4_client_to_reclaim+0xe9/0x260 [ T1205] Read of size 1 at addr 0000000000000010 by task nfsdcld/1205 [ T1205] [ T1205] CPU: 11 PID: 1205 Comm: nfsdcld Not tainted 5.10.0-00003-g2c1423731b8d #406 [ T1205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014 [ T1205] Call Trace: [ T1205] dump_stack+0x9a/0xd0 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] __kasan_report.cold+0x34/0x84 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] kasan_report+0x3a/0x50 [ T1205] nfs4_client_to_reclaim+0xe9/0x260 [ T1205] ? nfsd4_release_lockowner+0x410/0x410 [ T1205] cld_pipe_downcall+0x5ca/0x760 [ T1205] ? nfsd4_cld_tracking_exit+0x1d0/0x1d0 [ T1205] ? down_write_killable_nested+0x170/0x170 [ T1205] ? avc_policy_seqno+0x28/0x40 [ T1205] ? selinux_file_permission+0x1b4/0x1e0 [ T1205] rpc_pipe_write+0x84/0xb0 [ T1205] vfs_write+0x143/0x520 [ T1205] ksys_write+0xc9/0x170 [ T1205] ? __ia

Announced Source revision 1
Original source ↗

CVE-2024-47692

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2024-47692

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "6d07040ae5c2214e39c7444d898039c9e655a79a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "0f1d007bbea38a61cf9c5392708dc70ae9d84a3d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "b7b7a8df41ef18862dd6b22289fb46c2c12398af",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "84a563d136faf514fdad1ade28d7a142fd313cb8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "318f70857caab3da9a6ada9bc8c1f4f7591b695e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "766d5fbd78f7a52b3888449a0358760477b74602",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "1ff8be8d008b9ddc8e7043fbddd37d5d451b271b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "74725959c33c14114fdce1e36e3504d106584d53",
        "lessThan": "22451a16b7ab7debefce660672566be887db1637",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/nfsd/nfs4recover.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.285",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.227",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.168",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.113",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.54",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.10.13",
        "versionType": "semver",
        "lessThanOrEqual": "6.10.*"
      },
      {
        "status": "unaffected",
        "version": "6.11.2",
        "versionType": "semver",
        "lessThanOrEqual": "6.11.*"
      },
      {
        "status": "unaffected",
        "version": "6.12",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/nfsd/nfs4recover.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-47692

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#26725 · Revision 1
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Publisher date
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