Answer in brief
CVE-2022-50405 records a High severity (CVSS 7.8) vulnerability in net/tunnel: wait until all sk_user_data reader finish before releasing the sock. 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 7.8. 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:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <e8316584b0a6c61c9c407631040c22712b26e38c || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <84e566d157cc22ad2da8bdd970495855fbf13d92 || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <be34e79e0ae6adbf6e7e75ddaee9ad84795ab933 || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <303000c793f705d07b551eb7c1c27001c5b33c8d || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <91f09a776ae335ca836ed864b8f2a9461882a280 || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <9a6544343bba7da929d6d4a2dc44ec0f15970081 || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <b38aa7465411795e9e744b8d94633910497fec2a || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <588d0b8462f5ffed3e677e65639825b2678117ab || >=6a93cc9052748c6355ec9d5b6c38b77f85f1cb0d <3cf7203ca620682165706f70a1b12b5194607dce | e8316584b0a6c61c9c407631040c22712b26e38c, 84e566d157cc22ad2da8bdd970495855fbf13d92, be34e79e0ae6adbf6e7e75ddaee9ad84795ab933, 303000c793f705d07b551eb7c1c27001c5b33c8d, 91f09a776ae335ca836ed864b8f2a9461882a280, 9a6544343bba7da929d6d4a2dc44ec0f15970081, b38aa7465411795e9e744b8d94633910497fec2a, 588d0b8462f5ffed3e677e65639825b2678117ab, 3cf7203ca620682165706f70a1b12b5194607dce |
| Linux/Linuxgeneric | 3.18 | Not reported |
Published upstream
Sep 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: net/tunnel: wait until all sk_user_data reader finish before releasing the sock There is a race condition in vxlan that when deleting a vxlan device during receiving packets, there is a possibility that the sock is released after getting vxlan_sock vs from sk_user_data. Then in later vxlan_ecn_decapsulate(), vxlan_get_sk_family() we will got NULL pointer dereference. e.g. #0 [ffffa25ec6978a38] machine_kexec at ffffffff8c669757 #1 [ffffa25ec6978a90] __crash_kexec at ffffffff8c7c0a4d #2 [ffffa25ec6978b58] crash_kexec at ffffffff8c7c1c48 #3 [ffffa25ec6978b60] oops_end at ffffffff8c627f2b #4 [ffffa25ec6978b80] page_fault_oops at ffffffff8c678fcb #5 [ffffa25ec6978bd8] exc_page_fault at ffffffff8d109542 #6 [ffffa25ec6978c00] asm_exc_page_fault at ffffffff8d200b62 [exception RIP: vxlan_ecn_decapsulate+0x3b] RIP: ffffffffc1014e7b RSP: ffffa25ec6978cb0 RFLAGS: 00010246 RAX: 0000000000000008 RBX: ffff8aa000888000 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffff8a9fc7ab803e RDI: ffff8a9fd1168700 RBP: ffff8a9fc7ab803e R8: 0000000000700000 R9: 00000000000010ae R10: ffff8a9fcb748980 R11: 0000000000000000 R12: ffff8a9fd1168700 R13: ffff8aa000888000 R14: 00000000002a0000 R15: 00000000000010ae ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffffa25ec6978ce8] vxlan_rcv at ffffffffc10189cd [vxlan] #8 [ffffa25ec6978d90] udp_queue_rcv_one_skb at ffffffff8cfb6507 #9 [ffffa25ec6978dc0] udp_unicast_rcv_skb at ffffffff8cfb6e45 #10 [ffffa25ec6978dc8] __udp4_lib_rcv at ffffffff8cfb8807 #11 [ffffa25ec6978e20] ip_protocol_deliver_rcu at ffffffff8cf76951 #12 [ffffa25ec6978e48] ip_local_deliver at ffffffff8cf76bde #13 [ffffa25ec6978ea0] __netif_receive_skb_one_core at ffffffff8cecde9b #14 [ffffa25ec6978ec8] process_backlog at ffffffff8cece139 #15 [ffffa25ec6978f00] __napi_poll at ffffffff8ceced1a #16 [ffffa25ec6978f28] net_rx_action at ffffffff8cecf1f3 #17 [ffffa25ec6978fa0] __softirqentry_text_start at ffffffff8d4000ca #18 [ffffa25ec6978ff0] do_softirq at ffffffff8c6fbdc3 Reproducer: https://github.com/Mellanox/ovs-tests/blob/master/test-ovs-vxlan-remove-tunnel-during-traffic.sh Fix this by waiting for all sk_user_data reader to finish before releasing the sock.
Quoted source text, attributed separately from HOL analysis.