In the Linux kernel, the following vulnerability has been resolved:
bnxten: Set DMA unmap len correctly for XDPREDIRECT
When transmitting an XDPREDIRECT packet, call dmaunmaplenset() with the proper length instead of 0. This bug triggers this warning on a system with IOMMU enabled:
WARNING: CPU: 36 PID: 0 at drivers/iommu/dma-iommu.c:842 iommudmaunmap+0x159/0x170 RIP: 0010:iommudmaunmap+0x159/0x170 Code: a8 00 00 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 c8 00 00 00 00 48 c7 45 a0 ff ff ff ff 4c 89 45 b8 4c 89 45 c0 e9 77 ff ff ff <0f> 0b e9 60 ff ff ff e8 8b bf 6a 00 66 66 2e 0f 1f 84 00 00 00 00 RSP: 0018:ff22d31181150c88 EFLAGS: 00010206 RAX: 0000000000002000 RBX: 00000000e13a0000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ff22d31181150cf0 R08: ff22d31181150ca8 R09: 0000000000000000 R10: 0000000000000000 R11: ff22d311d36c9d80 R12: 0000000000001000 R13: ff13544d10645010 R14: ff22d31181150c90 R15: ff13544d0b2bac00 FS: 0000000000000000(0000) GS:ff13550908a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005be909dacff8 CR3: 0008000173408003 CR4: 0000000000f71ef0 PKRU: 55555554 Call Trace: <IRQ> ? showregs+0x6d/0x80 ? _warn+0x89/0x160 ? _iommudmaunmap+0x159/0x170 ? reportbug+0x17e/0x1b0 ? handlebug+0x46/0x90 ? excinvalidop+0x18/0x80 ? asmexcinvalidop+0x1b/0x20 ? _iommudmaunmap+0x159/0x170 ? _iommudmaunmap+0xb3/0x170 iommudmaunmappage+0x4f/0x100 dmaunmappageattrs+0x52/0x220 ? srsoaliasreturnthunk+0x5/0xfbef5 ? xdpreturnframe+0x2e/0xd0 bnxttxintxdp+0xdf/0x440 [bnxten] _bnxtpollworkdone+0x81/0x1e0 [bnxten] bnxtpoll+0xd3/0x1e0 [bnxten]
[
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"function_hash": "75533390730527928624628948691254446945",
"length": 288.0
},
"id": "CVE-2025-38439-114daf62",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@16ae306602163fcb7ae83f2701b542e43c100cee",
"signature_type": "Function",
"target": {
"function": "__bnxt_xmit_xdp_redirect",
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"line_hashes": [
"100110073641434163767159027803695812007",
"169193998431261405631731827723066999060",
"62135057964122811037326354316576534993",
"319146647677236660235114785406387791843"
],
"threshold": 0.9
},
"id": "CVE-2025-38439-b4d83797",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8d672a1a6bfc81fef9151925c9c0481f4acf4bec",
"signature_type": "Line",
"target": {
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"function_hash": "75533390730527928624628948691254446945",
"length": 288.0
},
"id": "CVE-2025-38439-c78eb66e",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e260f4d49370c85a4701d43c6d16b8c39f8b605f",
"signature_type": "Function",
"target": {
"function": "__bnxt_xmit_xdp_redirect",
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"line_hashes": [
"100110073641434163767159027803695812007",
"169193998431261405631731827723066999060",
"62135057964122811037326354316576534993",
"319146647677236660235114785406387791843"
],
"threshold": 0.9
},
"id": "CVE-2025-38439-d00258cd",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@16ae306602163fcb7ae83f2701b542e43c100cee",
"signature_type": "Line",
"target": {
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"line_hashes": [
"100110073641434163767159027803695812007",
"169193998431261405631731827723066999060",
"62135057964122811037326354316576534993",
"319146647677236660235114785406387791843"
],
"threshold": 0.9
},
"id": "CVE-2025-38439-f3bfcf84",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e260f4d49370c85a4701d43c6d16b8c39f8b605f",
"signature_type": "Line",
"target": {
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
},
{
"signature_version": "v1",
"deprecated": false,
"digest": {
"function_hash": "75533390730527928624628948691254446945",
"length": 288.0
},
"id": "CVE-2025-38439-f7e62b38",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8d672a1a6bfc81fef9151925c9c0481f4acf4bec",
"signature_type": "Function",
"target": {
"function": "__bnxt_xmit_xdp_redirect",
"file": "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c"
}
}
]