CVE-2025-71095 (GCVE-0-2025-71095)
Vulnerability from cvelistv5
Published
2026-01-13 15:34
Modified
2026-08-05 12:12
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix the crash issue for zero copy XDP_TX action There is a crash issue when running zero copy XDP_TX action, the crash log is shown below. [ 216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000 [ 216.187524] Internal error: Oops: 0000000096000144 [#1] SMP [ 216.301694] Call trace: [ 216.304130] dcache_clean_poc+0x20/0x38 (P) [ 216.308308] __dma_sync_single_for_device+0x1bc/0x1e0 [ 216.313351] stmmac_xdp_xmit_xdpf+0x354/0x400 [ 216.317701] __stmmac_xdp_run_prog+0x164/0x368 [ 216.322139] stmmac_napi_poll_rxtx+0xba8/0xf00 [ 216.326576] __napi_poll+0x40/0x218 [ 216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt For XDP_TX action, the xdp_buff is converted to xdp_frame by xdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame depends on the memory type of the xdp_buff. For page pool based xdp_buff it produces xdp_frame with memory type MEM_TYPE_PAGE_POOL. For zero copy XSK pool based xdp_buff it produces xdp_frame with memory type MEM_TYPE_PAGE_ORDER0. However, stmmac_xdp_xmit_back() does not check the memory type and always uses the page pool type, this leads to invalid mappings and causes the crash. Therefore, check the xdp_buff memory type in stmmac_xdp_xmit_back() to fix this issue.
References
Impacted products
Vendor Product Version
Linux Linux Version: bba2556efad66e7eaa56fece13f7708caa1187f8
Version: bba2556efad66e7eaa56fece13f7708caa1187f8
Version: bba2556efad66e7eaa56fece13f7708caa1187f8
Version: bba2556efad66e7eaa56fece13f7708caa1187f8
Version: bba2556efad66e7eaa56fece13f7708caa1187f8
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: fix the crash issue for zero copy XDP_TX action\n\nThere is a crash issue when running zero copy XDP_TX action, the crash\nlog is shown below.\n\n[  216.122464] Unable to handle kernel paging request at virtual address fffeffff80000000\n[  216.187524] Internal error: Oops: 0000000096000144 [#1]  SMP\n[  216.301694] Call trace:\n[  216.304130]  dcache_clean_poc+0x20/0x38 (P)\n[  216.308308]  __dma_sync_single_for_device+0x1bc/0x1e0\n[  216.313351]  stmmac_xdp_xmit_xdpf+0x354/0x400\n[  216.317701]  __stmmac_xdp_run_prog+0x164/0x368\n[  216.322139]  stmmac_napi_poll_rxtx+0xba8/0xf00\n[  216.326576]  __napi_poll+0x40/0x218\n[  216.408054] Kernel panic - not syncing: Oops: Fatal exception in interrupt\n\nFor XDP_TX action, the xdp_buff is converted to xdp_frame by\nxdp_convert_buff_to_frame(). The memory type of the resulting xdp_frame\ndepends on the memory type of the xdp_buff. For page pool based xdp_buff\nit produces xdp_frame with memory type MEM_TYPE_PAGE_POOL. For zero copy\nXSK pool based xdp_buff it produces xdp_frame with memory type\nMEM_TYPE_PAGE_ORDER0. However, stmmac_xdp_xmit_back() does not check the\nmemory type and always uses the page pool type, this leads to invalid\nmappings and causes the crash. Therefore, check the xdp_buff memory type\nin stmmac_xdp_xmit_back() to fix this issue."
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            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
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              "value": "AV:N - An unauthenticated network peer can supply a frame that reaches the stmmac zero-copy receive path and XDP_TX action on a configured interface.\nAC:L - Once an AF_XDP zero-copy queue and suitable XDP program are active, a qualifying packet deterministically triggers the invalid mapping; no race or uncontrollable condition is required.\nPR:N - The administrative privileges needed to configure AF_XDP and XDP are a deployment prerequisite, while the remote attacker triggering the receive path requires no account or capability.\nUI:N - No victim action is required after the vulnerable networking configuration is active.\nS:U - The fault and resulting impacts remain within the host kernel and its resources, without crossing a VM, IOMMU, or separate security authority.\nC:H - On coherent direct-DMA systems, the invalid page-pool address can reach the TX descriptor and cause the NIC to read and emit unrelated physical memory; repeated allocations make substantial disclosure defensible.\nI:N - The erroneous mapping is used for TX DMA, which reads host memory, and the duplicate XSK-buffer return is guarded against reinsertion; no credible arbitrary-write primitive was found.\nA:H - The demonstrated invalid DMA synchronization causes an interrupt-context oops and kernel panic, and a remote peer can repeatedly send qualifying packets."
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      "title": "net: stmmac: fix the crash issue for zero copy XDP_TX action",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71095",
    "datePublished": "2026-01-13T15:34:55.392Z",
    "dateReserved": "2026-01-13T15:30:19.650Z",
    "dateUpdated": "2026-08-05T12:12:03.079Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}


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