Skip to content
Heist/ feed
High

libceph: handle rbtree insertion error in decode_choose_args()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). In this function, num_choose_arg_maps is read from the message, and a corresponding number of crush_choose_arg_maps gets decoded afterwards. Each crush_choose_arg_map has a choose_args_index, which serves as the key when inserting it into the choose_args rbtree of the decoded crush_map. If a (potentially corrupted) message contains two crush_choose_arg_maps with the same index, the assertion in insert_choose_arg_map() triggers a kernel BUG when trying to insert the second crush_choose_arg_map. This patch fixes the issue by switching to the non-asserting rbtree insertion function and rejecting the message if the insertion fails. [ idryomov: changelog ]

Announced Source revision 1
Original source ↗

CVE-2026-52954

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-2026-52954

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": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "c7bf7864e2924fa5508ac270b0e9364bc13d5a6c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "f47430fc1f815e87406e2d3b4e476eff1bc7fd9b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "534ebc08df97c47d4c7596f336fa31ecbf91519c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "80c73bd1b2b04355d1d0c29be8ccbd25a380905d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "4d2b37abda9536808655830d683dc491d31741a8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "0a1265a9ab875f92b6a3ffb497404f46cf9d76a3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
        "lessThan": "d289478cfc0bcf81c7914200d6abdcb78bd04ded",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ceph/osdmap.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.258",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.209",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.141",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.91",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.33",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ceph/osdmap.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-52954

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40711 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement