CVE-2025-38246: bnxt: properly flush XDP redirect lists
In the Linux kernel, the following vulnerability has been resolved:
bnxt: properly flush XDP redirect lists
We encountered following crash when testing a XDPREDIRECT feature in production:
[56251.579676] listadd corruption. next->prev should be prev (ffff93120dd40f30), but was ffffb301ef3a6740. (next=ffff93120dd 40f30). [56251.601413] ------------[ cut here ]------------ [56251.611357] kernel BUG at lib/listdebug.c:29! [56251.621082] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [56251.632073] CPU: 111 UID: 0 PID: 0 Comm: swapper/111 Kdump: loaded Tainted: P O 6.12.33-cloudflare-2025.6. 3 #1 [56251.653155] Tainted: [P]=PROPRIETARYMODULE, [O]=OOTMODULE [56251.663877] Hardware name: MiTAC GC68B-B8032-G11P6-GPU/S8032GM-HE-CFR, BIOS V7.020.B10-sig 01/22/2025 [56251.682626] RIP: 0010:listaddvalidorreport+0x4b/0xa0 [56251.693203] Code: 0e 48 c7 c7 68 e7 d9 97 e8 42 16 fe ff 0f 0b 48 8b 52 08 48 39 c2 74 14 48 89 f1 48 c7 c7 90 e7 d9 97 48 89 c6 e8 25 16 fe ff <0f> 0b 4c 8b 02 49 39 f0 74 14 48 89 d1 48 c7 c7 e8 e7 d9 97 4c 89 [56251.725811] RSP: 0018:ffff93120dd40b80 EFLAGS: 00010246 [56251.736094] RAX: 0000000000000075 RBX: ffffb301e6bba9d8 RCX: 0000000000000000 [56251.748260] RDX: 0000000000000000 RSI: ffff9149afda0b80 RDI: ffff9149afda0b80 [56251.760349] RBP: ffff9131e49c8000 R08: 0000000000000000 R09: ffff93120dd40a18 [56251.772382] R10: ffff9159cf2ce1a8 R11: 0000000000000003 R12: ffff911a80850000 [56251.784364] R13: ffff93120fbc7000 R14: 0000000000000010 R15: ffff9139e7510e40 [56251.796278] FS: 0000000000000000(0000) GS:ffff9149afd80000(0000) knlGS:0000000000000000 [56251.809133] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [56251.819561] CR2: 00007f5e85e6f300 CR3: 00000038b85e2006 CR4: 0000000000770ef0 [56251.831365] PKRU: 55555554 [56251.838653] Call Trace: [56251.845560] <IRQ> [56251.851943] cpumapenqueue.cold+0x5/0xa [56251.860243] xdpdoredirect+0x2d9/0x480 [56251.868388] bnxtrxxdp+0x1d8/0x4c0 [bnxten] [56251.877028] bnxtrxpkt+0x5f7/0x19b0 [bnxten] [56251.885665] ? cpumaxwrite+0x1e/0x100 [56251.893510] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.902276] bnxtpollwork+0x190/0x340 [bnxten] [56251.911058] bnxtpoll+0xab/0x1b0 [bnxten] [56251.919041] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.927568] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.935958] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.944250] napipoll+0x2b/0x160 [56251.951155] bpftrampoline6442548651+0x79/0x123 [56251.959262] napipoll+0x5/0x160 [56251.966037] netrxaction+0x3d2/0x880 [56251.973133] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.981265] ? srsoaliasreturnthunk+0x5/0xfbef5 [56251.989262] ? hrtimerrunqueues+0x162/0x2a0 [56251.996967] ? srsoaliasreturnthunk+0x5/0xfbef5 [56252.004875] ? srsoaliasreturnthunk+0x5/0xfbef5 [56252.012673] ? bnxtmsix+0x62/0x70 [bnxten] [56252.019903] handlesoftirqs+0xcf/0x270 [56252.026650] irqexitrcu+0x67/0x90 [56252.032933] commoninterrupt+0x85/0xa0 [56252.039498] </IRQ> [56252.044246] <TASK> [56252.048935] asmcommoninterrupt+0x26/0x40 [56252.055727] RIP: 0010:cpuidleenterstate+0xb8/0x420 [56252.063305] Code: dc 01 00 00 e8 f9 79 3b ff e8 64 f7 ff ff 49 89 c5 0f 1f 44 00 00 31 ff e8 a5 32 3a ff 45 84 ff 0f 85 ae 01 00 00 fb 45 85 f6 <0f> 88 88 01 00 00 48 8b 04 24 49 63 ce 4c 89 ea 48 6b f1 68 48 29 [56252.088911] RSP: 0018:ffff93120c97fe98 EFLAGS: 00000202 [56252.096912] RAX: ffff9149afd80000 RBX: ffff9141d3a72800 RCX: 0000000000000000 [56252.106844] RDX: 00003329176c6b98 RSI: ffffffe36db3fdc7 RDI: 0000000000000000 [56252.116733] RBP: 0000000000000002 R08: 0000000000000002 R09: 000000000000004e [56252.126652] R10: ffff9149afdb30c4 R11: 071c71c71c71c71c R12: ffffffff985ff860 [56252.136637] R13: 00003329176c6b98 R14: 0000000000000002 R15: 0000000000000000 [56252.146667] ? cpuidleenterstate+0xab/0x420 [56252.153909] cpuidleenter+0x2d/0x40 [56252.160360] doidle+0x176/0x1c0 [56252.166456 ---truncated---
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38246?
CVE-2025-38246 is classified as a high-severity vulnerability in the Linux kernel.
How do I fix CVE-2025-38246?
To fix CVE-2025-38246, update your Linux kernel to the latest stable version that addresses this vulnerability.
What does CVE-2025-38246 affect?
CVE-2025-38246 affects the Linux kernel's handling of XDP_REDIRECT features, leading to potential crashes.
What types of systems are at risk from CVE-2025-38246?
Systems running vulnerable versions of the Linux kernel with enabled XDP_REDIRECT features are at risk from CVE-2025-38246.
Can CVE-2025-38246 lead to remote code execution?
CVE-2025-38246 does not directly lead to remote code execution but can cause denial of service through kernel crashes.