{"id":"CVE-2023-54094","revision":null,"records":[{"revision":"ab1a7b0f31814776987466bd3df016bb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-54094","aliases":[],"title":"net: prevent skb corruption on frag list segmentation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prevent skb corruption on frag list segmentation\n\nIan reported several skb corruptions triggered by rx-gro-list,\ncollecting different oops alike:\n\n[   62.624003] BUG: kernel NULL pointer dereference, address: 00000000000000c0\n[   62.631083] #PF: supervisor read access in kernel mode\n[   62.636312] #PF: error_code(0x0000) - not-present page\n[   62.641541] PGD 0 P4D 0\n[   62.644174] Oops: 0000 [#1] PREEMPT SMP NOPTI\n[   62.648629] CPU: 1 PID: 913 Comm: napi/eno2-79 Not tainted 6.4.0 #364\n[   62.655162] Hardware name: Supermicro Super Server/A2SDi-12C-HLN4F, BIOS 1.7a 10/13/2022\n[   62.663344] RIP: 0010:__udp_gso_segment (./include/linux/skbuff.h:2858\n./include/linux/udp.h:23 net/ipv4/udp_offload.c:228 net/ipv4/udp_offload.c:261\nnet/ipv4/udp_offload.c:277)\n[   62.687193] RSP: 0018:ffffbd3a83b4f868 EFLAGS: 00010246\n[   62.692515] RAX: 00000000000000ce RBX: 0000000000000000 RCX: 0000000000000000\n[   62.699743] RDX: ffffa124def8a000 RSI: 0000000000000079 RDI: ffffa125952a14d4\n[   62.706970] RBP: ffffa124def8a000 R08: 0000000000000022 R09: 00002000001558c9\n[   62.714199] R10: 0000000000000000 R11: 00000000be554639 R12: 00000000000000e2\n[   62.721426] R13: ffffa125952a1400 R14: ffffa125952a1400 R15: 00002000001558c9\n[   62.728654] FS:  0000000000000000(0000) GS:ffffa127efa40000(0000)\nknlGS:0000000000000000\n[   62.736852] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   62.742702] CR2: 00000000000000c0 CR3: 00000001034b0000 CR4: 00000000003526e0\n[   62.749948] Call Trace:\n[   62.752498]  <TASK>\n[   62.779267] inet_gso_segment (net/ipv4/af_inet.c:1398)\n[   62.787605] skb_mac_gso_segment (net/core/gro.c:141)\n[   62.791906] __skb_gso_segment (net/core/dev.c:3403 (discriminator 2))\n[   62.800492] validate_xmit_skb (./include/linux/netdevice.h:4862\nnet/core/dev.c:3659)\n[   62.804695] validate_xmit_skb_list (net/core/dev.c:3710)\n[   62.809158] sch_direct_xmit (net/sched/sch_generic.c:330)\n[   62.813198] __dev_queue_xmit (net/core/dev.c:3805 net/core/dev.c:4210)\nnet/netfilter/core.c:626)\n[   62.821093] br_dev_queue_push_xmit (net/bridge/br_forward.c:55)\n[   62.825652] maybe_deliver (net/bridge/br_forward.c:193)\n[   62.829420] br_flood (net/bridge/br_forward.c:233)\n[   62.832758] br_handle_frame_finish (net/bridge/br_input.c:215)\n[   62.837403] br_handle_frame (net/bridge/br_input.c:298\nnet/bridge/br_input.c:416)\n[   62.851417] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5387)\n[   62.866114] __netif_receive_skb_list_core (net/core/dev.c:5570)\n[   62.871367] netif_receive_skb_list_internal (net/core/dev.c:5638\nnet/core/dev.c:5727)\n[   62.876795] napi_complete_done (./include/linux/list.h:37\n./include/net/gro.h:434 ./include/net/gro.h:429 net/core/dev.c:6067)\n[   62.881004] ixgbe_poll (drivers/net/ethernet/intel/ixgbe/ixgbe_main.c:3191)\n[   62.893534] __napi_poll (net/core/dev.c:6498)\n[   62.897133] napi_threaded_poll (./include/linux/netpoll.h:89\nnet/core/dev.c:6640)\n[   62.905276] kthread (kernel/kthread.c:379)\n[   62.913435] ret_from_fork (arch/x86/entry/entry_64.S:314)\n[   62.917119]  </TASK>\n\nIn the critical scenario, rx-gro-list GRO-ed packets are fed, via a\nbridge, both to the local input path and to an egress device (tun).\n\nThe segmentation of such packets unsafely writes to the cloned skbs\nwith shared heads.\n\nThis change addresses the issue by uncloning as needed the\nto-be-segmented skbs.","state":0,"publishedAt":"2025-12-24T13:06:22.446+00:00","modifiedAt":"2026-10-15T21:41:39.521+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/skbuff.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\",\n                            \"lessThan\": \"bc3ab5d2ab69823f5cff89cf74ef78ffa0386c9a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\",\n                            \"lessThan\": \"ea438eed94ac0fe69b93ac034738823c0e989a12\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\",\n                            \"lessThan\": \"1731234e8b60063eae858c77b55c7a88f5084353\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\",\n                            \"lessThan\": \"7a59f29961cf97b98b02acaadf5a0b1f8dde938c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a1296a38d0cf62bffb9a03c585cbd5dbf15d596\",\n                            \"lessThan\": \"c329b261afe71197d9da83c1f18eb45a7e97e089\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/skbuff.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.188\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.121\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.40\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.4.5\",\n                            \"lessThanOrEqual\": \"6.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.5\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/bc3ab5d2ab69823f5cff89cf74ef78ffa0386c9a","https://git.kernel.org/stable/c/ea438eed94ac0fe69b93ac034738823c0e989a12","https://git.kernel.org/stable/c/1731234e8b60063eae858c77b55c7a88f5084353","https://git.kernel.org/stable/c/7a59f29961cf97b98b02acaadf5a0b1f8dde938c","https://git.kernel.org/stable/c/c329b261afe71197d9da83c1f18eb45a7e97e089"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-54094","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-54094","identifiers":["CVE-2023-54094"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-897f1f8852214f7d97a85b009edb7d92","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T13:16:47.5163098+00:00","lastSuccessAt":"2026-11-09T13:16:47.505+00:00","error":"7 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T13:16:47.505+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13700,"expectedIdentifiers":13707,"failedIdentifiers":7},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T13:04:36.1502744+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T13:04:36.1502744+00:00","lastSuccessAt":"2026-11-09T13:04:36.3096956+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.3096959+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-fec5a400f2004099a6ceb2e015ba7713","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T13:04:37.3410735+00:00","lastSuccessAt":"2026-11-09T13:04:37.338+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:37.338+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T13:04:36.0102403+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.0102403+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T13:02:24.6845928+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:02:24.6845928+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-c905fa1bd26c7b261e77cc7202a86dc766ff31c2b096b501f3bf44f561e34970","complete":true,"records":3063,"lastAttemptAt":"2026-11-09T13:04:36.1177843+00:00","lastSuccessAt":"2026-11-09T12:02:21.7931207+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.1177843+00:00","snapshotPublishedAt":"2026-11-09T11:18:00+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-3e30324623f4d042faeccbd22ff1ab0b99d8d436d702bf285b288cefe802b265","complete":true,"records":231298,"lastAttemptAt":"2026-11-09T13:04:35.8866798+00:00","lastSuccessAt":"2026-11-09T13:04:34.5744206+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:35.8866798+00:00","snapshotPublishedAt":"2026-11-09T12:33:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}