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CVE-2024-36929 (GCVE-0-2024-36929)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:29 – Updated: 2026-08-05 11:32
VLAI
Title
net: core: reject skb_copy(_expand) for fraglist GSO skbs
Summary
In the Linux kernel, the following vulnerability has been resolved: net: core: reject skb_copy(_expand) for fraglist GSO skbs SKB_GSO_FRAGLIST skbs must not be linearized, otherwise they become invalid. Return NULL if such an skb is passed to skb_copy or skb_copy_expand, in order to prevent a crash on a potential later call to skb_gso_segment.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-04 15:42 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < faa83a7797f06cefed86731ba4baa3b4dfdc06c1 (git)
Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < c7af99cc21923a9650533c9d77265c8dd683a533 (git)
Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < 989bf6fd1e1d058e73a364dce1a0c53d33373f62 (git)
Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < cfe34d86ef9765c388f145039006bb79b6c81ac6 (git)
Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < aea5e2669c2863fdd8679c40ee310b3bcaa85aec (git)
Affected: 3a1296a38d0cf62bffb9a03c585cbd5dbf15d596 , < d091e579b864fa790dd6a0cd537a22c383126681 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.217 , ≤ 5.10.* (semver)
Unaffected: 5.15.159 , ≤ 5.15.* (semver)
Unaffected: 6.1.91 , ≤ 6.1.* (semver)
Unaffected: 6.6.31 , ≤ 6.6.* (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T18:53:27+00:00",
      "cve": "CVE-2024-36929",
      "id": "CVE-2024-36929",
      "initial_release_date": "2024-05-30T00:00:00+00:00",
      "product_status:fixed": "929",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: core: reject skb_copy(_expand) for fraglist GSO skbs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36929.json",
      "version": "3"
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      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:24:10Z",
      "cve": "CVE-2024-36929",
      "id": "CVE-2024-36929",
      "initial_release_date": "2024-06-04T02:25:36Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "188",
      "product_status:recommended": "638",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-36929",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-36929.json",
      "version": "120"
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No administrator or user action is involved.\\nS:U - The fault occurs in the kernel\u0027s own network stack and its impact is confined to that kernel\u0027s security authority. No hypervisor, IOMMU, or sandbox boundary is crossed.\\nC:N - The failure is a NULL pointer dereference at a small fixed offset (`udp_hdr(NULL)-\u003edest`), which faults immediately below `mmap_min_addr` rather than reading valid memory. No out-of-bounds read, uninitialized data, or kernel pointer is exposed to the attacker.\\nI:N - Nothing is written outside the skb before the oops \\u2014 only the packet\u0027s own UDP length field is updated in `__udp_gso_segment_list()`. There is no out-of-bounds write, use-after-free, or type confusion, so no control-flow-hijack or arbitrary-write primitive arises.\\nA:H - The NULL dereference happens in softirq context on the transmit path, producing a kernel oops that on a forwarding device typically panics the machine (and is fatal with `panic_on_oops`). An unauthenticated attacker can repeat it at will with a UDP burst, causing complete loss of availability.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"faa83a7797f06cefed86731ba4baa3b4dfdc06c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"c7af99cc21923a9650533c9d77265c8dd683a533\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"989bf6fd1e1d058e73a364dce1a0c53d33373f62\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"cfe34d86ef9765c388f145039006bb79b6c81ac6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"aea5e2669c2863fdd8679c40ee310b3bcaa85aec\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\", \"lessThan\": \"d091e579b864fa790dd6a0cd537a22c383126681\", \"versionType\": \"git\"}], \"programFiles\": [\"net/core/skbuff.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.217\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.159\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.91\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.31\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/core/skbuff.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/faa83a7797f06cefed86731ba4baa3b4dfdc06c1\"}, {\"url\": \"https://git.kernel.org/stable/c/c7af99cc21923a9650533c9d77265c8dd683a533\"}, {\"url\": \"https://git.kernel.org/stable/c/989bf6fd1e1d058e73a364dce1a0c53d33373f62\"}, {\"url\": \"https://git.kernel.org/stable/c/cfe34d86ef9765c388f145039006bb79b6c81ac6\"}, {\"url\": \"https://git.kernel.org/stable/c/aea5e2669c2863fdd8679c40ee310b3bcaa85aec\"}, {\"url\": \"https://git.kernel.org/stable/c/d091e579b864fa790dd6a0cd537a22c383126681\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: core: reject skb_copy(_expand) for fraglist GSO skbs\\n\\nSKB_GSO_FRAGLIST skbs must not be linearized, otherwise they become\\ninvalid. Return NULL if such an skb is passed to skb_copy or\\nskb_copy_expand, in order to prevent a crash on a potential later\\ncall to skb_gso_segment.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.217\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.159\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.91\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.31\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.10\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:32:08.251Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36929\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:32:08.251Z\", \"dateReserved\": \"2024-05-30T15:25:07.069Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-30T15:29:21.430Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.