CVE-2025-21867 (GCVE-0-2025-21867)
Vulnerability from cvelistv5
Published
2025-03-27 13:38
Modified
2025-05-04 07:22
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type() KMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The cause of the issue was that eth_skb_pkt_type() accessed skb's data that didn't contain an Ethernet header. This occurs when bpf_prog_test_run_xdp() passes an invalid value as the user_data argument to bpf_test_init(). Fix this by returning an error when user_data is less than ETH_HLEN in bpf_test_init(). Additionally, remove the check for "if (user_size > size)" as it is unnecessary. [1] BUG: KMSAN: use-after-free in eth_skb_pkt_type include/linux/etherdevice.h:627 [inline] BUG: KMSAN: use-after-free in eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165 eth_skb_pkt_type include/linux/etherdevice.h:627 [inline] eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165 __xdp_build_skb_from_frame+0x5a8/0xa50 net/core/xdp.c:635 xdp_recv_frames net/bpf/test_run.c:272 [inline] xdp_test_run_batch net/bpf/test_run.c:361 [inline] bpf_test_run_xdp_live+0x2954/0x3330 net/bpf/test_run.c:390 bpf_prog_test_run_xdp+0x148e/0x1b10 net/bpf/test_run.c:1318 bpf_prog_test_run+0x5b7/0xa30 kernel/bpf/syscall.c:4371 __sys_bpf+0x6a6/0xe20 kernel/bpf/syscall.c:5777 __do_sys_bpf kernel/bpf/syscall.c:5866 [inline] __se_sys_bpf kernel/bpf/syscall.c:5864 [inline] __x64_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:5864 x64_sys_call+0x2ea0/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: free_pages_prepare mm/page_alloc.c:1056 [inline] free_unref_page+0x156/0x1320 mm/page_alloc.c:2657 __free_pages+0xa3/0x1b0 mm/page_alloc.c:4838 bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [inline] ringbuf_map_free+0xff/0x1e0 kernel/bpf/ringbuf.c:235 bpf_map_free kernel/bpf/syscall.c:838 [inline] bpf_map_free_deferred+0x17c/0x310 kernel/bpf/syscall.c:862 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa2b/0x1b60 kernel/workqueue.c:3310 worker_thread+0xedf/0x1550 kernel/workqueue.c:3391 kthread+0x535/0x6b0 kernel/kthread.c:389 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 CPU: 1 UID: 0 PID: 17276 Comm: syz.1.16450 Not tainted 6.12.0-05490-g9bb88c659673 #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a9e1284e87d59b1303b69d1808d310821d6e5f7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6b3d638ca897e099fa99bd6d02189d3176f80a47Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/972bafed67ca73ad9a56448384281eb5fd5c0ba3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d56d8a23d95100b65f40438639dd82db2af81c11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f615fccfc689cb48977d275ac2e391297b52392bPatch
Impacted products
Vendor Product Version
Linux Linux Version: be3d72a2896cb24090f268dce4aa8a304d40bc23
Version: be3d72a2896cb24090f268dce4aa8a304d40bc23
Version: be3d72a2896cb24090f268dce4aa8a304d40bc23
Version: be3d72a2896cb24090f268dce4aa8a304d40bc23
Version: be3d72a2896cb24090f268dce4aa8a304d40bc23
 Create a notification for this product.
   Linux Linux Version: 5.18
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()\n\nKMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The\ncause of the issue was that eth_skb_pkt_type() accessed skb\u0027s data\nthat didn\u0027t contain an Ethernet header. This occurs when\nbpf_prog_test_run_xdp() passes an invalid value as the user_data\nargument to bpf_test_init().\n\nFix this by returning an error when user_data is less than ETH_HLEN in\nbpf_test_init(). Additionally, remove the check for \"if (user_size \u003e\nsize)\" as it is unnecessary.\n\n[1]\nBUG: KMSAN: use-after-free in eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\nBUG: KMSAN: use-after-free in eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\n eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\n eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\n __xdp_build_skb_from_frame+0x5a8/0xa50 net/core/xdp.c:635\n xdp_recv_frames net/bpf/test_run.c:272 [inline]\n xdp_test_run_batch net/bpf/test_run.c:361 [inline]\n bpf_test_run_xdp_live+0x2954/0x3330 net/bpf/test_run.c:390\n bpf_prog_test_run_xdp+0x148e/0x1b10 net/bpf/test_run.c:1318\n bpf_prog_test_run+0x5b7/0xa30 kernel/bpf/syscall.c:4371\n __sys_bpf+0x6a6/0xe20 kernel/bpf/syscall.c:5777\n __do_sys_bpf kernel/bpf/syscall.c:5866 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5864 [inline]\n __x64_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:5864\n x64_sys_call+0x2ea0/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:322\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was created at:\n free_pages_prepare mm/page_alloc.c:1056 [inline]\n free_unref_page+0x156/0x1320 mm/page_alloc.c:2657\n __free_pages+0xa3/0x1b0 mm/page_alloc.c:4838\n bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [inline]\n ringbuf_map_free+0xff/0x1e0 kernel/bpf/ringbuf.c:235\n bpf_map_free kernel/bpf/syscall.c:838 [inline]\n bpf_map_free_deferred+0x17c/0x310 kernel/bpf/syscall.c:862\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xa2b/0x1b60 kernel/workqueue.c:3310\n worker_thread+0xedf/0x1550 kernel/workqueue.c:3391\n kthread+0x535/0x6b0 kernel/kthread.c:389\n ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\nCPU: 1 UID: 0 PID: 17276 Comm: syz.1.16450 Not tainted 6.12.0-05490-g9bb88c659673 #8\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014"
        }
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        "dateUpdated": "2025-05-04T07:22:50.800Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/f615fccfc689cb48977d275ac2e391297b52392b"
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          "url": "https://git.kernel.org/stable/c/d56d8a23d95100b65f40438639dd82db2af81c11"
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          "url": "https://git.kernel.org/stable/c/1a9e1284e87d59b1303b69d1808d310821d6e5f7"
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        {
          "url": "https://git.kernel.org/stable/c/6b3d638ca897e099fa99bd6d02189d3176f80a47"
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      "title": "bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21867",
    "datePublished": "2025-03-27T13:38:20.673Z",
    "dateReserved": "2024-12-29T08:45:45.781Z",
    "dateUpdated": "2025-05-04T07:22:50.800Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21867\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T14:15:47.750\",\"lastModified\":\"2025-04-01T15:44:27.570\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()\\n\\nKMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The\\ncause of the issue was that eth_skb_pkt_type() accessed skb\u0027s data\\nthat didn\u0027t contain an Ethernet header. This occurs when\\nbpf_prog_test_run_xdp() passes an invalid value as the user_data\\nargument to bpf_test_init().\\n\\nFix this by returning an error when user_data is less than ETH_HLEN in\\nbpf_test_init(). Additionally, remove the check for \\\"if (user_size \u003e\\nsize)\\\" as it is unnecessary.\\n\\n[1]\\nBUG: KMSAN: use-after-free in eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\\nBUG: KMSAN: use-after-free in eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\\n eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\\n eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\\n __xdp_build_skb_from_frame+0x5a8/0xa50 net/core/xdp.c:635\\n xdp_recv_frames net/bpf/test_run.c:272 [inline]\\n xdp_test_run_batch net/bpf/test_run.c:361 [inline]\\n bpf_test_run_xdp_live+0x2954/0x3330 net/bpf/test_run.c:390\\n bpf_prog_test_run_xdp+0x148e/0x1b10 net/bpf/test_run.c:1318\\n bpf_prog_test_run+0x5b7/0xa30 kernel/bpf/syscall.c:4371\\n __sys_bpf+0x6a6/0xe20 kernel/bpf/syscall.c:5777\\n __do_sys_bpf kernel/bpf/syscall.c:5866 [inline]\\n __se_sys_bpf kernel/bpf/syscall.c:5864 [inline]\\n __x64_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:5864\\n x64_sys_call+0x2ea0/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:322\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n free_pages_prepare mm/page_alloc.c:1056 [inline]\\n free_unref_page+0x156/0x1320 mm/page_alloc.c:2657\\n __free_pages+0xa3/0x1b0 mm/page_alloc.c:4838\\n bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [inline]\\n ringbuf_map_free+0xff/0x1e0 kernel/bpf/ringbuf.c:235\\n bpf_map_free kernel/bpf/syscall.c:838 [inline]\\n bpf_map_free_deferred+0x17c/0x310 kernel/bpf/syscall.c:862\\n process_one_work kernel/workqueue.c:3229 [inline]\\n process_scheduled_works+0xa2b/0x1b60 kernel/workqueue.c:3310\\n worker_thread+0xedf/0x1550 kernel/workqueue.c:3391\\n kthread+0x535/0x6b0 kernel/kthread.c:389\\n ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:147\\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\\n\\nCPU: 1 UID: 0 PID: 17276 Comm: syz.1.16450 Not tainted 6.12.0-05490-g9bb88c659673 #8\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, test_run: Se solucion\u00f3 el problema de use-after-free en eth_skb_pkt_type(). KMSAN report\u00f3 un problema de use-after-free en eth_skb_pkt_type()[1]. La causa del problema era que eth_skb_pkt_type() acced\u00eda a datos de skb que no conten\u00edan un encabezado Ethernet. Esto ocurre cuando bpf_prog_test_run_xdp() pasa un valor no v\u00e1lido como argumento user_data a bpf_test_init(). Se soluciona devolviendo un error cuando user_data sea menor que ETH_HLEN en bpf_test_init(). Adem\u00e1s, se ha eliminado la comprobaci\u00f3n de \\\"if (user_size \u0026gt; size)\\\", ya que no es necesaria. [1] ERROR: KMSAN: use-after-free en eth_skb_pkt_type include/linux/etherdevice.h:627 [en l\u00ednea] ERROR: KMSAN: use-after-free en eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165 eth_skb_pkt_type include/linux/etherdevice.h:627 [en l\u00ednea] eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165 __xdp_build_skb_from_frame+0x5a8/0xa50 net/core/xdp.c:635 xdp_recv_frames net/bpf/test_run.c:272 [en l\u00ednea] xdp_test_run_batch net/bpf/test_run.c:361 [en l\u00ednea] bpf_test_run_xdp_live+0x2954/0x3330 net/bpf/test_run.c:390 bpf_prog_test_run_xdp+0x148e/0x1b10 net/bpf/test_run.c:1318 bpf_prog_test_run+0x5b7/0xa30 kernel/bpf/syscall.c:4371 __sys_bpf+0x6a6/0xe20 kernel/bpf/syscall.c:5777 __do_sys_bpf kernel/bpf/syscall.c:5866 [en l\u00ednea] __se_sys_bpf kernel/bpf/syscall.c:5864 [en l\u00ednea] __x64_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:5864 x64_sys_call+0x2ea0/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit se cre\u00f3 en: free_pages_prepare mm/page_alloc.c:1056 [en l\u00ednea] free_unref_page+0x156/0x1320 mm/page_alloc.c:2657 __free_pages+0xa3/0x1b0 mm/page_alloc.c:4838 bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [en l\u00ednea] ringbuf_map_free+0xff/0x1e0 kernel/bpf/ringbuf.c:235 bpf_map_free kernel/bpf/syscall.c:838 [en l\u00ednea] bpf_map_free_deferred+0x17c/0x310 kernel/bpf/syscall.c:862 proceso_un_trabajo kernel/workqueue.c:3229 [en l\u00ednea] proceso_scheduled_works+0xa2b/0x1b60 kernel/workqueue.c:3310 subproceso_trabajador+0xedf/0x1550 kernel/workqueue.c:3391 kthread+0x535/0x6b0 kernel/kthread.c:389 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 CPU: 1 UID: 0 PID: 17276 Comm: syz.1.16450 No contaminado 6.12.0-05490-g9bb88c659673 #8 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 01/04/2014\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"6.1.130\",\"matchCriteriaId\":\"0CBE8AE0-BB0A-4BC3-85D8-ED647510B2CD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.80\",\"matchCriteriaId\":\"A93F3655-6FAF-43B0-8541-A212998F05B8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.17\",\"matchCriteriaId\":\"15370AEE-6D1C-49C3-8CB7-E889D5F92B6F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.5\",\"matchCriteriaId\":\"72E69ABB-9015-43A6-87E1-5150383CFFD9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"186716B6-2B66-4BD0-852E-D48E71C0C85F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D3E781C-403A-498F-9DA9-ECEE50F41E75\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"66619FB8-0AAF-4166-B2CF-67B24143261D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1a9e1284e87d59b1303b69d1808d310821d6e5f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6b3d638ca897e099fa99bd6d02189d3176f80a47\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/972bafed67ca73ad9a56448384281eb5fd5c0ba3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d56d8a23d95100b65f40438639dd82db2af81c11\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f615fccfc689cb48977d275ac2e391297b52392b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "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-2025-21867\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-28T17:27:05.715395Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-28T17:27:07.063Z\"}}], \"cna\": {\"title\": \"bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"be3d72a2896cb24090f268dce4aa8a304d40bc23\", \"lessThan\": \"f615fccfc689cb48977d275ac2e391297b52392b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"be3d72a2896cb24090f268dce4aa8a304d40bc23\", \"lessThan\": \"d56d8a23d95100b65f40438639dd82db2af81c11\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"be3d72a2896cb24090f268dce4aa8a304d40bc23\", \"lessThan\": \"972bafed67ca73ad9a56448384281eb5fd5c0ba3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"be3d72a2896cb24090f268dce4aa8a304d40bc23\", \"lessThan\": \"1a9e1284e87d59b1303b69d1808d310821d6e5f7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"be3d72a2896cb24090f268dce4aa8a304d40bc23\", \"lessThan\": \"6b3d638ca897e099fa99bd6d02189d3176f80a47\", \"versionType\": \"git\"}], \"programFiles\": [\"net/bpf/test_run.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.130\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.80\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.17\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/bpf/test_run.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f615fccfc689cb48977d275ac2e391297b52392b\"}, {\"url\": \"https://git.kernel.org/stable/c/d56d8a23d95100b65f40438639dd82db2af81c11\"}, {\"url\": \"https://git.kernel.org/stable/c/972bafed67ca73ad9a56448384281eb5fd5c0ba3\"}, {\"url\": \"https://git.kernel.org/stable/c/1a9e1284e87d59b1303b69d1808d310821d6e5f7\"}, {\"url\": \"https://git.kernel.org/stable/c/6b3d638ca897e099fa99bd6d02189d3176f80a47\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()\\n\\nKMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The\\ncause of the issue was that eth_skb_pkt_type() accessed skb\u0027s data\\nthat didn\u0027t contain an Ethernet header. This occurs when\\nbpf_prog_test_run_xdp() passes an invalid value as the user_data\\nargument to bpf_test_init().\\n\\nFix this by returning an error when user_data is less than ETH_HLEN in\\nbpf_test_init(). Additionally, remove the check for \\\"if (user_size \u003e\\nsize)\\\" as it is unnecessary.\\n\\n[1]\\nBUG: KMSAN: use-after-free in eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\\nBUG: KMSAN: use-after-free in eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\\n eth_skb_pkt_type include/linux/etherdevice.h:627 [inline]\\n eth_type_trans+0x4ee/0x980 net/ethernet/eth.c:165\\n __xdp_build_skb_from_frame+0x5a8/0xa50 net/core/xdp.c:635\\n xdp_recv_frames net/bpf/test_run.c:272 [inline]\\n xdp_test_run_batch net/bpf/test_run.c:361 [inline]\\n bpf_test_run_xdp_live+0x2954/0x3330 net/bpf/test_run.c:390\\n bpf_prog_test_run_xdp+0x148e/0x1b10 net/bpf/test_run.c:1318\\n bpf_prog_test_run+0x5b7/0xa30 kernel/bpf/syscall.c:4371\\n __sys_bpf+0x6a6/0xe20 kernel/bpf/syscall.c:5777\\n __do_sys_bpf kernel/bpf/syscall.c:5866 [inline]\\n __se_sys_bpf kernel/bpf/syscall.c:5864 [inline]\\n __x64_sys_bpf+0xa4/0xf0 kernel/bpf/syscall.c:5864\\n x64_sys_call+0x2ea0/0x3d90 arch/x86/include/generated/asm/syscalls_64.h:322\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xd9/0x1d0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nUninit was created at:\\n free_pages_prepare mm/page_alloc.c:1056 [inline]\\n free_unref_page+0x156/0x1320 mm/page_alloc.c:2657\\n __free_pages+0xa3/0x1b0 mm/page_alloc.c:4838\\n bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [inline]\\n ringbuf_map_free+0xff/0x1e0 kernel/bpf/ringbuf.c:235\\n bpf_map_free kernel/bpf/syscall.c:838 [inline]\\n bpf_map_free_deferred+0x17c/0x310 kernel/bpf/syscall.c:862\\n process_one_work kernel/workqueue.c:3229 [inline]\\n process_scheduled_works+0xa2b/0x1b60 kernel/workqueue.c:3310\\n worker_thread+0xedf/0x1550 kernel/workqueue.c:3391\\n kthread+0x535/0x6b0 kernel/kthread.c:389\\n ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:147\\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\\n\\nCPU: 1 UID: 0 PID: 17276 Comm: syz.1.16450 Not tainted 6.12.0-05490-g9bb88c659673 #8\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-03-27T13:38:20.673Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21867\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-28T17:32:23.044Z\", \"dateReserved\": \"2024-12-29T08:45:45.781Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-03-27T13:38:20.673Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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