Answer in brief
CVE-2025-38146 records a Critical severity (CVSS 9.4) vulnerability in net: openvswitch: Fix the dead loop of MPLS parse. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <4b9a086eedc1fddae632310386098c12155e3d0a || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <ad17eb86d042d72a59fd184ad1adf34f5eb36843 || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <f26fe7c3002516dd3c288f1012786df31f4d89e0 || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <8ebcd311b4866ab911d1445ead08690e67f0c488 || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <69541e58323ec3e3904e1fa87a6213961b1f52f4 || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <3c1906a3d50cb94fd0a10e97a1c0a40c0f033cb7 || >=fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 <0bdc924bfb319fb10d1113cbf091fc26fb7b1f99 | 4b9a086eedc1fddae632310386098c12155e3d0a, ad17eb86d042d72a59fd184ad1adf34f5eb36843, f26fe7c3002516dd3c288f1012786df31f4d89e0, 8ebcd311b4866ab911d1445ead08690e67f0c488, 69541e58323ec3e3904e1fa87a6213961b1f52f4, 3c1906a3d50cb94fd0a10e97a1c0a40c0f033cb7, 0bdc924bfb319fb10d1113cbf091fc26fb7b1f99 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Jul 3, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix the dead loop of MPLS parse The unexpected MPLS packet may not end with the bottom label stack. When there are many stacks, The label count value has wrapped around. A dead loop occurs, soft lockup/CPU stuck finally. stack backtrace: UBSAN: array-index-out-of-bounds in /build/linux-0Pa0xK/linux-5.15.0/net/openvswitch/flow.c:662:26 index -1 is out of range for type '__be32 [3]' CPU: 34 PID: 0 Comm: swapper/34 Kdump: loaded Tainted: G OE 5.15.0-121-generic #131-Ubuntu Hardware name: Dell Inc. PowerEdge C6420/0JP9TF, BIOS 2.12.2 07/14/2021 Call Trace: <IRQ> show_stack+0x52/0x5c dump_stack_lvl+0x4a/0x63 dump_stack+0x10/0x16 ubsan_epilogue+0x9/0x36 __ubsan_handle_out_of_bounds.cold+0x44/0x49 key_extract_l3l4+0x82a/0x840 [openvswitch] ? kfree_skbmem+0x52/0xa0 key_extract+0x9c/0x2b0 [openvswitch] ovs_flow_key_extract+0x124/0x350 [openvswitch] ovs_vport_receive+0x61/0xd0 [openvswitch] ? kernel_init_free_pages.part.0+0x4a/0x70 ? get_page_from_freelist+0x353/0x540 netdev_port_receive+0xc4/0x180 [openvswitch] ? netdev_port_receive+0x180/0x180 [openvswitch] netdev_frame_hook+0x1f/0x40 [openvswitch] __netif_receive_skb_core.constprop.0+0x23a/0xf00 __netif_receive_skb_list_core+0xfa/0x240 netif_receive_skb_list_internal+0x18e/0x2a0 napi_complete_done+0x7a/0x1c0 bnxt_poll+0x155/0x1c0 [bnxt_en] __napi_poll+0x30/0x180 net_rx_action+0x126/0x280 ? bnxt_msix+0x67/0x80 [bnxt_en] handle_softirqs+0xda/0x2d0 irq_exit_rcu+0x96/0xc0 common_interrupt+0x8e/0xa0 </IRQ>
Quoted source text, attributed separately from HOL analysis.