Skip to content
Heist/ feed
High

scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a 256-byte stack buffer, then will memcpy() cur_len bytes from that buffer. snprintf() returns the length the output would have had, which can exceed the buffer size when the fabric WWN is long because iSCSI IQN names can be up to 223 bytes. The check at the memcpy() site only guards the destination page write, not the source read, so memcpy() will read past the stack buffer and copy adjacent stack contents to the sysfs reader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic() will be triggered. Commit 27e06650a5ea ("scsi: target: target_core_configfs: Add length check to avoid buffer overflow") added the same bound to the target_lu_gp_members_show() but the tg_pt_gp variant was missed so resolve that here.

Announced Source revision 1
Original source ↗

CVE-2026-46149

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-2026-46149

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": "d3cc9d490c207d57a289054397349f6f8c90354e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "db0a4759d62cad4ff891e2d81ae4be73bb57f4a4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "12f2201a56957ba020392223a7393a5eba080c1b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "1f678d13e939f91840cb1ebe9b88544923539d3c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "00d91bfdce5033f5d9b4915638ae9b0553848b5d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "e501154f9d82c95d2719bcbbaf679d8fd3226ef7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5",
        "lessThan": "772a896a56e0e3ef9424a025cec9176f9d8f4552",
        "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": "5.10.258",
        "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": "6.6.140",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.88",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.30",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.7",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/target/target_core_configfs.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-46149

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40143 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement