CVE-2024-26581 (GCVE-0-2024-26581)

Vulnerability from cvelistv5 – Published: 2024-02-20 12:52 – Updated: 2026-08-05 11:26
VLAI
Title
netfilter: nft_set_rbtree: skip end interval element from gc
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: skip end interval element from gc rbtree lazy gc on insert might collect an end interval element that has been just added in this transactions, skip end interval elements that are not yet active.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8284a79136c384059e85e278da2210b809730287 , < c60d252949caf9aba537525195edae6bbabc35eb (git)
Affected: acaee227cf79c45a5d2d49c3e9a66333a462802c , < 10e9cb39313627f2eae4cd70c4b742074e998fd8 (git)
Affected: 893cb3c3513cf661a0ff45fe0cfa83fe27131f76 , < 4cee42fcf54fec46b344681e7cc4f234bb22f85a (git)
Affected: 50cbb9d195c197af671869c8cadce3bd483735a0 , < 2bab493a5624444ec6e648ad0d55a362bcb4c003 (git)
Affected: 89a4d1a89751a0fbd520e64091873e19cc0979e8 , < 1296c110c5a0b45a8fcf58e7d18bc5da61a565cb (git)
Affected: f718863aca469a109895cb855e6b81fff4827d71 , < b734f7a47aeb32a5ba298e4ccc16bb0c52b6dbf7 (git)
Affected: f718863aca469a109895cb855e6b81fff4827d71 , < 6eb14441f10602fa1cf691da9d685718b68b78a9 (git)
Affected: f718863aca469a109895cb855e6b81fff4827d71 , < 60c0c230c6f046da536d3df8b39a20b9a9fd6af0 (git)
Affected: cd66733932399475fe933cb3ec03e687ed401462 (git)
Affected: 5.4.262 , < 5.4.269 (semver)
Affected: 5.10.190 , < 5.10.210 (semver)
Affected: 5.15.124 , < 5.15.149 (semver)
Affected: 6.1.43 , < 6.1.78 (semver)
Affected: 6.4.8 , < 6.5 (semver)
Create a notification for this product.
Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 5.4.269 , ≤ 5.4.* (semver)
Unaffected: 5.10.210 , ≤ 5.10.* (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.78 , ≤ 6.1.* (semver)
Unaffected: 6.6.17 , ≤ 6.6.* (semver)
Unaffected: 6.7.5 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
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    "microsoft_vex": {
      "current_release_date": "2026-02-20T23:22:21.000Z",
      "cve": "CVE-2024-26581",
      "id": "msrc_CVE-2024-26581",
      "initial_release_date": "2024-02-02T08:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "netfilter: nft_set_rbtree: skip end interval element from gc",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26581.json",
      "version": "3"
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    "redhat_vex": {
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      "current_release_date": "2025-11-21T11:38:37+00:00",
      "cve": "CVE-2024-26581",
      "id": "CVE-2024-26581",
      "initial_release_date": "2024-02-20T00:00:00+00:00",
      "product_status:fixed": "1295",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "157",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nftables: nft_set_rbtree skip end interval element from gc",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26581.json",
      "version": "3"
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      "current_release_date": "2026-08-05T01:02:00Z",
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      "initial_release_date": "2024-02-22T03:05:20Z",
      "product_status:known_affected": "388",
      "product_status:known_not_affected": "215",
      "product_status:recommended": "526",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26581",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26581.json",
      "version": "68"
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{\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-30T19:31:46.616632Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-24T20:37:28.519Z\"}}], \"cna\": {\"title\": \"netfilter: nft_set_rbtree: skip end interval element from gc\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerability is reached through the NETLINK_NETFILTER socket by issuing an nftables `NFT_MSG_NEWSETELEM` batch; it requires local system access to open the netlink socket and cannot be triggered by remote packets.\\nAC:L - Every precondition \\u2014 element timeout value, key ordering in the rbtree, insertion order of the interval end/start elements, and whether the batch commits or aborts \\u2014 is fully controlled by the attacker within a single netlink batch, making the erroneous GC removal and subsequent double-free deterministic with no race to win.\\nPR:L - The path is gated only by `netlink_net_capable(skb, CAP_NET_ADMIN)`, which resolves to `ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)`; an ordinary unprivileged user obtains this via `unshare -Urn` on default-configured distributions.\\nUI:N - The attacker performs the entire sequence \\u2014 set creation, element expiry, and the triggering insert batch \\u2014 from their own process with no victim action required.\\nS:U - The corruption and any resulting privilege escalation occur entirely within the kernel\u0027s own security authority; no VM, IOMMU, or hypervisor boundary is crossed.\\nC:H - On commit the freed element is read back by `nf_tables_setelem_notify()` and its contents are sent to userspace over netlink, and the double-free/UAF gives the attacker a reclaimed-slab read primitive over arbitrary kernel heap data.\\nI:H - `nft_rbtree_activate()` writes into the freed object, `nft_set_elem_destroy()` double-frees it, and `nft_data_release()`/`nft_use_dec()` underflow the referenced chain/object use counters \\u2014 a combination that yields controlled heap write primitives and full privilege escalation, as with the closely related exploited nftables refcount/double-free bugs.\\nA:H - The use-after-free, double free, rbtree node corruption, and `nelems` underflow reliably produce kernel oopses or panics, and the sync GC path also hits `WARN_ON_ONCE` splats.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"8284a79136c384059e85e278da2210b809730287\", \"lessThan\": \"c60d252949caf9aba537525195edae6bbabc35eb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"acaee227cf79c45a5d2d49c3e9a66333a462802c\", \"lessThan\": \"10e9cb39313627f2eae4cd70c4b742074e998fd8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"893cb3c3513cf661a0ff45fe0cfa83fe27131f76\", \"lessThan\": \"4cee42fcf54fec46b344681e7cc4f234bb22f85a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"50cbb9d195c197af671869c8cadce3bd483735a0\", \"lessThan\": \"2bab493a5624444ec6e648ad0d55a362bcb4c003\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89a4d1a89751a0fbd520e64091873e19cc0979e8\", \"lessThan\": \"1296c110c5a0b45a8fcf58e7d18bc5da61a565cb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f718863aca469a109895cb855e6b81fff4827d71\", \"lessThan\": \"b734f7a47aeb32a5ba298e4ccc16bb0c52b6dbf7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f718863aca469a109895cb855e6b81fff4827d71\", \"lessThan\": \"6eb14441f10602fa1cf691da9d685718b68b78a9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f718863aca469a109895cb855e6b81fff4827d71\", \"lessThan\": \"60c0c230c6f046da536d3df8b39a20b9a9fd6af0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"cd66733932399475fe933cb3ec03e687ed401462\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.4.262\", \"lessThan\": \"5.4.269\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.10.190\", \"lessThan\": \"5.10.210\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.124\", \"lessThan\": \"5.15.149\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.43\", \"lessThan\": \"6.1.78\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.4.8\", \"lessThan\": \"6.5\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/netfilter/nft_set_rbtree.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.5\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.5\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.269\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.210\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.78\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.17\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/netfilter/nft_set_rbtree.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c60d252949caf9aba537525195edae6bbabc35eb\"}, {\"url\": \"https://git.kernel.org/stable/c/10e9cb39313627f2eae4cd70c4b742074e998fd8\"}, {\"url\": \"https://git.kernel.org/stable/c/4cee42fcf54fec46b344681e7cc4f234bb22f85a\"}, {\"url\": \"https://git.kernel.org/stable/c/2bab493a5624444ec6e648ad0d55a362bcb4c003\"}, {\"url\": \"https://git.kernel.org/stable/c/1296c110c5a0b45a8fcf58e7d18bc5da61a565cb\"}, {\"url\": \"https://git.kernel.org/stable/c/b734f7a47aeb32a5ba298e4ccc16bb0c52b6dbf7\"}, {\"url\": \"https://git.kernel.org/stable/c/6eb14441f10602fa1cf691da9d685718b68b78a9\"}, {\"url\": \"https://git.kernel.org/stable/c/60c0c230c6f046da536d3df8b39a20b9a9fd6af0\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nft_set_rbtree: skip end interval element from gc\\n\\nrbtree lazy gc on insert might collect an end interval element that has\\nbeen just added in this transactions, skip end interval elements that\\nare not yet active.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.269\", \"versionStartIncluding\": \"5.4.262\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.210\", \"versionStartIncluding\": \"5.10.190\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.149\", \"versionStartIncluding\": \"5.15.124\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.78\", \"versionStartIncluding\": \"6.1.43\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.17\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.5\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.4.8\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:26:00.062Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26581\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:26:00.062Z\", \"dateReserved\": \"2024-02-19T14:20:24.125Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-20T12:52:57.398Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.