{"id":"CVE-2025-22056","revision":"f4b00808d0484fa6805e0b055fd5513b","records":[{"revision":"f4b00808d0484fa6805e0b055fd5513b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-22056","aliases":[],"title":"netfilter: nft_tunnel: fix geneve_opt type confusion addition","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_tunnel: fix geneve_opt type confusion addition\n\nWhen handling multiple NFTA_TUNNEL_KEY_OPTS_GENEVE attributes, the\nparsing logic should place every geneve_opt structure one by one\ncompactly. Hence, when deciding the next geneve_opt position, the\npointer addition should be in units of char *.\n\nHowever, the current implementation erroneously does type conversion\nbefore the addition, which will lead to heap out-of-bounds write.\n\n[    6.989857] ==================================================================\n[    6.990293] BUG: KASAN: slab-out-of-bounds in nft_tunnel_obj_init+0x977/0xa70\n[    6.990725] Write of size 124 at addr ffff888005f18974 by task poc/178\n[    6.991162]\n[    6.991259] CPU: 0 PID: 178 Comm: poc-oob-write Not tainted 6.1.132 #1\n[    6.991655] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n[    6.992281] Call Trace:\n[    6.992423]  <TASK>\n[    6.992586]  dump_stack_lvl+0x44/0x5c\n[    6.992801]  print_report+0x184/0x4be\n[    6.993790]  kasan_report+0xc5/0x100\n[    6.994252]  kasan_check_range+0xf3/0x1a0\n[    6.994486]  memcpy+0x38/0x60\n[    6.994692]  nft_tunnel_obj_init+0x977/0xa70\n[    6.995677]  nft_obj_init+0x10c/0x1b0\n[    6.995891]  nf_tables_newobj+0x585/0x950\n[    6.996922]  nfnetlink_rcv_batch+0xdf9/0x1020\n[    6.998997]  nfnetlink_rcv+0x1df/0x220\n[    6.999537]  netlink_unicast+0x395/0x530\n[    7.000771]  netlink_sendmsg+0x3d0/0x6d0\n[    7.001462]  __sock_sendmsg+0x99/0xa0\n[    7.001707]  ____sys_sendmsg+0x409/0x450\n[    7.002391]  ___sys_sendmsg+0xfd/0x170\n[    7.003145]  __sys_sendmsg+0xea/0x170\n[    7.004359]  do_syscall_64+0x5e/0x90\n[    7.005817]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n[    7.006127] RIP: 0033:0x7ec756d4e407\n[    7.006339] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 faf\n[    7.007364] RSP: 002b:00007ffed5d46760 EFLAGS: 00000202 ORIG_RAX: 000000000000002e\n[    7.007827] RAX: ffffffffffffffda RBX: 00007ec756cc4740 RCX: 00007ec756d4e407\n[    7.008223] RDX: 0000000000000000 RSI: 00007ffed5d467f0 RDI: 0000000000000003\n[    7.008620] RBP: 00007ffed5d468a0 R08: 0000000000000000 R09: 0000000000000000\n[    7.009039] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000\n[    7.009429] R13: 00007ffed5d478b0 R14: 00007ec756ee5000 R15: 00005cbd4e655cb8\n\nFix this bug with correct pointer addition and conversion in parse\nand dump code.","state":0,"publishedAt":"2025-04-16T14:12:13.44+00:00","modifiedAt":"2026-10-15T01:05:24.393+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/netfilter/nft_tunnel.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"31d49eb436f2da61280508d7adf8c9b473b967aa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"ca2adfc03cd6273f0b589fe65afc6f75e0fe116e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"a263d31c8c92e5919d41af57d9479cfb66323782\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"28d88ee1e1cc8ac2d79aeb112717b97c5c833d43\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"0a93a710d6df334b828ea064c6d39fda34f901dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"446d94898c560ed2f61e26ae445858a4c4830762\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"708e268acb3a446ad2a8a3d2e9bd41cc23660cd6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"925d844696d9287f841d6b3e0ed62a35fb175970\",\n                            \"lessThan\": \"1b755d8eb1ace3870789d48fbd94f386ad6e30be\",\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/netfilter/nft_tunnel.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.236\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.180\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.134\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.87\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.23\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13.11\",\n                            \"lessThanOrEqual\": \"6.13.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.14.2\",\n                            \"lessThanOrEqual\": \"6.14.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/31d49eb436f2da61280508d7adf8c9b473b967aa","https://git.kernel.org/stable/c/ca2adfc03cd6273f0b589fe65afc6f75e0fe116e","https://git.kernel.org/stable/c/a263d31c8c92e5919d41af57d9479cfb66323782","https://git.kernel.org/stable/c/28d88ee1e1cc8ac2d79aeb112717b97c5c833d43","https://git.kernel.org/stable/c/0a93a710d6df334b828ea064c6d39fda34f901dc","https://git.kernel.org/stable/c/446d94898c560ed2f61e26ae445858a4c4830762","https://git.kernel.org/stable/c/708e268acb3a446ad2a8a3d2e9bd41cc23660cd6","https://git.kernel.org/stable/c/1b755d8eb1ace3870789d48fbd94f386ad6e30be"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-22056","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-22056","identifiers":["CVE-2025-22056"]},"retained":false,"historicalAffected":[]}],"coverage":[]}