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nf_tables: nft_dynset: fix possible stateful expression memleak in error path

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nf_tables: nft_dynset: fix possible stateful expression memleak in error path If cloning the second stateful expression in the element via GFP_ATOMIC fails, then the first stateful expression remains in place without being released. unreferenced object (percpu) 0x607b97e9cab8 (size 16): comm "softirq", pid 0, jiffies 4294931867 hex dump (first 16 bytes on cpu 3): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 backtrace (crc 0): pcpu_alloc_noprof+0x453/0xd80 nft_counter_clone+0x9c/0x190 [nf_tables] nft_expr_clone+0x8f/0x1b0 [nf_tables] nft_dynset_new+0x2cb/0x5f0 [nf_tables] nft_rhash_update+0x236/0x11c0 [nf_tables] nft_dynset_eval+0x11f/0x670 [nf_tables] nft_do_chain+0x253/0x1700 [nf_tables] nft_do_chain_ipv4+0x18d/0x270 [nf_tables] nf_hook_slow+0xaa/0x1e0 ip_local_deliver+0x209/0x330

Announced Source revision 1
Original source ↗

CVE-2026-23399

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-2026-23399

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": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "eb7bf413e59945df03d4567b73ce464eebe2f4ea",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "4357dbb1d9c35ca0b4443d71c98a48e6666f7689",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "e6661add2d9c6913e1dad97336595e23a2bed195",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "d1354873cbe3b344899c4311ac05897fd83e3f21",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "31641c682db73353e4647e40735c7f2a75ff58ef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "c88a9fd26cee365bec932196f76175772a941cca",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "563125a73ac30d7036ae69ca35c40500562c1de4",
        "lessThan": "0548a13b5a145b16e4da0628b5936baf35f51b43",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "net/netfilter/nf_tables_api.c",
      "net/netfilter/nft_dynset.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.11"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.11",
        "versionType": "semver"
      },
      {
        "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": "6.6.136",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.78",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.20",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.10",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "net/netfilter/nf_tables_api.c",
      "net/netfilter/nft_dynset.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-23399

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#27248 · Revision 1
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Publisher date
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