CVE-2023-52732 ceph: blocklist the kclient when receiving corrupted snap trace

2024-05-2115:22:57

Linux

www.cve.org

linux

kernel

fix

corrupted

snap

trace

blocklist

kclient

mds

ios

access

evict

vulnerability

AI Score

6.4

Confidence

Low

EPSS

Percentile

9.0%

JSON

In the Linux kernel, the following vulnerability has been resolved:

ceph: blocklist the kclient when receiving corrupted snap trace

When received corrupted snap trace we don’t know what exactly has
happened in MDS side. And we shouldn’t continue IOs and metadatas
access to MDS, which may corrupt or get incorrect contents.

This patch will just block all the further IO/MDS requests
immediately and then evict the kclient itself.

The reason why we still need to evict the kclient just after
blocking all the further IOs is that the MDS could revoke the caps
faster.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ceph/addr.c",
      "fs/ceph/caps.c",
      "fs/ceph/file.c",
      "fs/ceph/mds_client.c",
      "fs/ceph/snap.c",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "66ec619e4591",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "a68e564adcaa",
        "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/ceph/addr.c",
      "fs/ceph/caps.c",
      "fs/ceph/file.c",
      "fs/ceph/mds_client.c",
      "fs/ceph/snap.c",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "6.1.13",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]