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scsi: target: target_core_configfs: Add length check to avoid buffer overflow

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: scsi: target: target_core_configfs: Add length check to avoid buffer overflow A buffer overflow arises from the usage of snprintf to write into the buffer "buf" in target_lu_gp_members_show function located in /drivers/target/target_core_configfs.c. This buffer is allocated with size LU_GROUP_NAME_BUF (256 bytes). snprintf(...) formats multiple strings into buf with the HBA name (hba->hba_group.cg_item), a slash character, a devicename (dev-> dev_group.cg_item) and a newline character, the total formatted string length may exceed the buffer size of 256 bytes. Since snprintf() returns the total number of bytes that would have been written (the length of %s/%sn ), this value may exceed the buffer length (256 bytes) passed to memcpy(), this will ultimately cause function memcpy reporting a buffer overflow error. An additional check of the return value of snprintf() can avoid this buffer overflow.

Announced Source revision 1
Original source ↗

CVE-2025-39998

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-2025-39998

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": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "e6eeee5dc0d9221ff96d1b229b1d0222c8871b84",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "764a91e2fc9639e07aac93bc70e387e6b1e33084",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "ddc79fba132b807ff775467acceaf48b456e008b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "e73fe0eefac3e15bf88fb5b4afae4c76215ee4d4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "f03aa5e39da7d045615b3951d2a6ca1d7132f881",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "53c6351597e6a17ec6619f6f060d54128cb9a187",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "4b292286949588bd2818e66ff102db278de8dd26",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "a150275831b765b0f1de8b8ff52ec5c6933ac15d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "27e06650a5eafe832a90fd2604f0c5e920857fae",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/target/target_core_configfs.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.38"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.38",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.301",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.246",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.195",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.156",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.16.11",
        "versionType": "semver",
        "lessThanOrEqual": "6.16.*"
      },
      {
        "status": "unaffected",
        "version": "6.17.1",
        "versionType": "semver",
        "lessThanOrEqual": "6.17.*"
      },
      {
        "status": "unaffected",
        "version": "6.18",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/target/target_core_configfs.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-39998

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30659 · Revision 1
Added to Heist Feed
Publisher date
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