CVE-2024-39506 (GCVE-0-2024-39506)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2025-11-03 21:56
VLAI?
Title
liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet
Summary
In the Linux kernel, the following vulnerability has been resolved: liquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet In lio_vf_rep_copy_packet() pg_info->page is compared to a NULL value, but then it is unconditionally passed to skb_add_rx_frag() which looks strange and could lead to null pointer dereference. lio_vf_rep_copy_packet() call trace looks like: octeon_droq_process_packets octeon_droq_fast_process_packets octeon_droq_dispatch_pkt octeon_create_recv_info ...search in the dispatch_list... ->disp_fn(rdisp->rinfo, ...) lio_vf_rep_pkt_recv(struct octeon_recv_info *recv_info, ...) In this path there is no code which sets pg_info->page to NULL. So this check looks unneeded and doesn't solve potential problem. But I guess the author had reason to add a check and I have no such card and can't do real test. In addition, the code in the function liquidio_push_packet() in liquidio/lio_core.c does exactly the same. Based on this, I consider the most acceptable compromise solution to adjust this issue by moving skb_add_rx_frag() into conditional scope. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < 87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2 (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < dcc7440f32c7a26b067aff6e7d931ec593024a79 (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < cbf18d8128a753cb632bef39470d19befd9c7347 (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < a86490a3712cc513113440a606a0e77130abd47c (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < fd2b613bc4c508e55c1221c6595bb889812a4fea (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < a6f4d0ec170a46b5f453cacf55dff5989b42bbfa (git)
Affected: 1f233f327913f3dee0602cba9c64df1903772b55 , < c44711b78608c98a3e6b49ce91678cd0917d5349 (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.317 , ≤ 4.19.* (semver)
Unaffected: 5.4.279 , ≤ 5.4.* (semver)
Unaffected: 5.10.221 , ≤ 5.10.* (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.95 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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\"5.4.279\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.221\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.95\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.35\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/cavium/liquidio/lio_vf_rep.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/87d6bdc006f0cbf297a3b2ad6e40ede4c3ee5dc2\"}, {\"url\": \"https://git.kernel.org/stable/c/dcc7440f32c7a26b067aff6e7d931ec593024a79\"}, {\"url\": \"https://git.kernel.org/stable/c/cbf18d8128a753cb632bef39470d19befd9c7347\"}, {\"url\": \"https://git.kernel.org/stable/c/a86490a3712cc513113440a606a0e77130abd47c\"}, {\"url\": \"https://git.kernel.org/stable/c/f1ab15a09492a5ae8ab1e2c35ba2cf9e150d25ee\"}, {\"url\": \"https://git.kernel.org/stable/c/fd2b613bc4c508e55c1221c6595bb889812a4fea\"}, {\"url\": \"https://git.kernel.org/stable/c/a6f4d0ec170a46b5f453cacf55dff5989b42bbfa\"}, {\"url\": \"https://git.kernel.org/stable/c/c44711b78608c98a3e6b49ce91678cd0917d5349\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nliquidio: Adjust a NULL pointer handling path in lio_vf_rep_copy_packet\\n\\nIn lio_vf_rep_copy_packet() pg_info-\u003epage is compared to a NULL value,\\nbut then it is unconditionally passed to skb_add_rx_frag() which looks\\nstrange and could lead to null pointer dereference.\\n\\nlio_vf_rep_copy_packet() call trace looks like:\\n\\tocteon_droq_process_packets\\n\\t octeon_droq_fast_process_packets\\n\\t  octeon_droq_dispatch_pkt\\n\\t   octeon_create_recv_info\\n\\t    ...search in the dispatch_list...\\n\\t     -\u003edisp_fn(rdisp-\u003erinfo, ...)\\n\\t      lio_vf_rep_pkt_recv(struct octeon_recv_info *recv_info, ...)\\nIn this path there is no code which sets pg_info-\u003epage to NULL.\\nSo this check looks unneeded and doesn\u0027t solve potential problem.\\nBut I guess the author had reason to add a check and I have no such card\\nand can\u0027t do real test.\\nIn addition, the code in the function liquidio_push_packet() in\\nliquidio/lio_core.c does exactly the same.\\n\\nBased on this, I consider the most acceptable compromise solution to\\nadjust this issue by moving skb_add_rx_frag() into conditional scope.\\n\\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:07:30.669Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-39506\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:07:30.669Z\", \"dateReserved\": \"2024-06-25T14:23:23.752Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:20:38.298Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • 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.