CVE-2025-21680 (GCVE-0-2025-21680)

Vulnerability from cvelistv5 – Published: 2025-01-31 11:25 – Updated: 2026-05-11 21:04
VLAI
Title
pktgen: Avoid out-of-bounds access in get_imix_entries
Summary
In the Linux kernel, the following vulnerability has been resolved: pktgen: Avoid out-of-bounds access in get_imix_entries Passing a sufficient amount of imix entries leads to invalid access to the pkt_dev->imix_entries array because of the incorrect boundary check. UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 Found by Linux Verification Center (linuxtesting.org) with SVACE. [ fp: allow to fill the array completely; minor changelog cleanup ]
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
  • CWE-129 - Improper Validation of Array Index
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 52a62f8603f97e720882c8f5aff2767ac6a11d5f , < 3450092cc2d1c311c5ea92a2486daa2a33520ea5 (git)
Affected: 52a62f8603f97e720882c8f5aff2767ac6a11d5f , < e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486 (git)
Affected: 52a62f8603f97e720882c8f5aff2767ac6a11d5f , < 7cde21f52042aa2e29a654458166b873d2ae66b3 (git)
Affected: 52a62f8603f97e720882c8f5aff2767ac6a11d5f , < 1a9b65c672ca9dc4ba52ca2fd54329db9580ce29 (git)
Affected: 52a62f8603f97e720882c8f5aff2767ac6a11d5f , < 76201b5979768500bca362871db66d77cb4c225e (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.177 , ≤ 5.15.* (semver)
Unaffected: 6.1.127 , ≤ 6.1.* (semver)
Unaffected: 6.6.74 , ≤ 6.6.* (semver)
Unaffected: 6.12.11 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type \u0027imix_pkt [20]\u0027 CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace:  dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 Found by Linux Verification Center (linuxtesting.org) with SVACE. [ fp: allow to fill the array completely; minor changelog cleanup ] 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T23:33:29+00:00",
      "cve": "CVE-2025-21680",
      "id": "CVE-2025-21680",
      "initial_release_date": "2025-01-31T00:00:00+00:00",
      "product_status:fixed": "309",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: pktgen: Avoid out-of-bounds access in get_imix_entries",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21680.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21680\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:51:54.428740Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-129\", \"description\": \"CWE-129 Improper Validation of Array Index\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:59:08.530Z\"}}], \"cna\": {\"title\": \"pktgen: Avoid out-of-bounds access in get_imix_entries\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"52a62f8603f97e720882c8f5aff2767ac6a11d5f\", \"lessThan\": \"3450092cc2d1c311c5ea92a2486daa2a33520ea5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52a62f8603f97e720882c8f5aff2767ac6a11d5f\", \"lessThan\": \"e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52a62f8603f97e720882c8f5aff2767ac6a11d5f\", \"lessThan\": \"7cde21f52042aa2e29a654458166b873d2ae66b3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52a62f8603f97e720882c8f5aff2767ac6a11d5f\", \"lessThan\": \"1a9b65c672ca9dc4ba52ca2fd54329db9580ce29\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"52a62f8603f97e720882c8f5aff2767ac6a11d5f\", \"lessThan\": \"76201b5979768500bca362871db66d77cb4c225e\", \"versionType\": \"git\"}], \"programFiles\": [\"net/core/pktgen.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.177\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.127\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.74\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/core/pktgen.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/3450092cc2d1c311c5ea92a2486daa2a33520ea5\"}, {\"url\": \"https://git.kernel.org/stable/c/e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486\"}, {\"url\": \"https://git.kernel.org/stable/c/7cde21f52042aa2e29a654458166b873d2ae66b3\"}, {\"url\": \"https://git.kernel.org/stable/c/1a9b65c672ca9dc4ba52ca2fd54329db9580ce29\"}, {\"url\": \"https://git.kernel.org/stable/c/76201b5979768500bca362871db66d77cb4c225e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npktgen: Avoid out-of-bounds access in get_imix_entries\\n\\nPassing a sufficient amount of imix entries leads to invalid access to the\\npkt_dev-\u003eimix_entries array because of the incorrect boundary check.\\n\\nUBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24\\nindex 20 is out of range for type \u0027imix_pkt [20]\u0027\\nCPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\\nCall Trace:\\n\u003cTASK\u003e\\ndump_stack_lvl lib/dump_stack.c:117\\n__ubsan_handle_out_of_bounds lib/ubsan.c:429\\nget_imix_entries net/core/pktgen.c:874\\npktgen_if_write net/core/pktgen.c:1063\\npde_write fs/proc/inode.c:334\\nproc_reg_write fs/proc/inode.c:346\\nvfs_write fs/read_write.c:593\\nksys_write fs/read_write.c:644\\ndo_syscall_64 arch/x86/entry/common.c:83\\nentry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130\\n\\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\\n\\n[ fp: allow to fill the array completely; minor changelog cleanup ]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.177\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.127\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.74\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.11\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"5.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:18:55.584Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21680\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T19:57:11.468Z\", \"dateReserved\": \"2024-12-29T08:45:45.738Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-01-31T11:25:40.831Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.