{"api_version":"1","generated_at":"2026-07-18T02:44:53+00:00","cve":"CVE-2025-68776","urls":{"html":"https://cve.report/CVE-2025-68776","api":"https://cve.report/api/cve/CVE-2025-68776.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-68776","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-68776"},"summary":{"title":"net/hsr: fix NULL pointer dereference in prp_get_untagged_frame()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/hsr: fix NULL pointer dereference in prp_get_untagged_frame()\n\nprp_get_untagged_frame() calls __pskb_copy() to create frame->skb_std\nbut doesn't check if the allocation failed. If __pskb_copy() returns\nNULL, skb_clone() is called with a NULL pointer, causing a crash:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]\nCPU: 0 UID: 0 PID: 5625 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nRIP: 0010:skb_clone+0xd7/0x3a0 net/core/skbuff.c:2041\nCode: 03 42 80 3c 20 00 74 08 4c 89 f7 e8 23 29 05 f9 49 83 3e 00 0f 85 a0 01 00 00 e8 94 dd 9d f8 48 8d 6b 7e 49 89 ee 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 d1 01 00 00 44 0f b6 7d 00 41 83 e7 0c\nRSP: 0018:ffffc9000d00f200 EFLAGS: 00010207\nRAX: ffffffff892235a1 RBX: 0000000000000000 RCX: ffff88803372a480\nRDX: 0000000000000000 RSI: 0000000000000820 RDI: 0000000000000000\nRBP: 000000000000007e R08: ffffffff8f7d0f77 R09: 1ffffffff1efa1ee\nR10: dffffc0000000000 R11: fffffbfff1efa1ef R12: dffffc0000000000\nR13: 0000000000000820 R14: 000000000000000f R15: ffff88805144cc00\nFS:  0000555557f6d500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000555581d35808 CR3: 000000005040e000 CR4: 0000000000352ef0\nCall Trace:\n <TASK>\n hsr_forward_do net/hsr/hsr_forward.c:-1 [inline]\n hsr_forward_skb+0x1013/0x2860 net/hsr/hsr_forward.c:741\n hsr_handle_frame+0x6ce/0xa70 net/hsr/hsr_slave.c:84\n __netif_receive_skb_core+0x10b9/0x4380 net/core/dev.c:5966\n __netif_receive_skb_one_core net/core/dev.c:6077 [inline]\n __netif_receive_skb+0x72/0x380 net/core/dev.c:6192\n netif_receive_skb_internal net/core/dev.c:6278 [inline]\n netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337\n tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485\n tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953\n tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0x5c9/0xb30 fs/read_write.c:686\n ksys_write+0x145/0x250 fs/read_write.c:738\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f0449f8e1ff\nCode: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48\nRSP: 002b:00007ffd7ad94c90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007f044a1e5fa0 RCX: 00007f0449f8e1ff\nRDX: 000000000000003e RSI: 0000200000000500 RDI: 00000000000000c8\nRBP: 00007ffd7ad94d20 R08: 0000000000000000 R09: 0000000000000000\nR10: 000000000000003e R11: 0000000000000293 R12: 0000000000000001\nR13: 00007f044a1e5fa0 R14: 00007f044a1e5fa0 R15: 0000000000000003\n </TASK>\n\nAdd a NULL check immediately after __pskb_copy() to handle allocation\nfailures gracefully.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-01-13 16:15:57","updated_at":"2026-07-14 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68776","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f266a683a4804dc499efc6c2206ef68efed029d0 3ce95a57d8a1f0e20b637cdeddaaed81831ca819 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f266a683a4804dc499efc6c2206ef68efed029d0 c851e43b88b40bb7c20176c51cbf4f8c8d960dd9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f266a683a4804dc499efc6c2206ef68efed029d0 7be6d25f4d974e44918ba3a5d58ebb9d36879087 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f266a683a4804dc499efc6c2206ef68efed029d0 8f289fa12926aae44347ca7d490e216555d8f255 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]}],"providerMetadata":{"dateUpdated":"2026-07-14T12:44:13.112Z","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP"},"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}],"x_adpType":"supplier"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/hsr/hsr_forward.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3ce95a57d8a1f0e20b637cdeddaaed81831ca819","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"c851e43b88b40bb7c20176c51cbf4f8c8d960dd9","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"7be6d25f4d974e44918ba3a5d58ebb9d36879087","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"8f289fa12926aae44347ca7d490e216555d8f255","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"1742974c24a9c1f1fd2e5edca0cbaccb720b397a","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"6220d38a08f8837575cd8f830928b49a3a5a5095","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"},{"lessThan":"188e0fa5a679570ea35474575e724d8211423d17","status":"affected","version":"f266a683a4804dc499efc6c2206ef68efed029d0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/hsr/hsr_forward.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.17"},{"lessThan":"3.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.248","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.198","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.160","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.120","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.64","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.248","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.198","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.160","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.120","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.64","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.3","versionStartIncluding":"3.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19","versionStartIncluding":"3.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/hsr: fix NULL pointer dereference in prp_get_untagged_frame()\n\nprp_get_untagged_frame() calls __pskb_copy() to create frame->skb_std\nbut doesn't check if the allocation failed. If __pskb_copy() returns\nNULL, skb_clone() is called with a NULL pointer, causing a crash:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]\nCPU: 0 UID: 0 PID: 5625 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nRIP: 0010:skb_clone+0xd7/0x3a0 net/core/skbuff.c:2041\nCode: 03 42 80 3c 20 00 74 08 4c 89 f7 e8 23 29 05 f9 49 83 3e 00 0f 85 a0 01 00 00 e8 94 dd 9d f8 48 8d 6b 7e 49 89 ee 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 d1 01 00 00 44 0f b6 7d 00 41 83 e7 0c\nRSP: 0018:ffffc9000d00f200 EFLAGS: 00010207\nRAX: ffffffff892235a1 RBX: 0000000000000000 RCX: ffff88803372a480\nRDX: 0000000000000000 RSI: 0000000000000820 RDI: 0000000000000000\nRBP: 000000000000007e R08: ffffffff8f7d0f77 R09: 1ffffffff1efa1ee\nR10: dffffc0000000000 R11: fffffbfff1efa1ef R12: dffffc0000000000\nR13: 0000000000000820 R14: 000000000000000f R15: ffff88805144cc00\nFS:  0000555557f6d500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000555581d35808 CR3: 000000005040e000 CR4: 0000000000352ef0\nCall Trace:\n <TASK>\n hsr_forward_do net/hsr/hsr_forward.c:-1 [inline]\n hsr_forward_skb+0x1013/0x2860 net/hsr/hsr_forward.c:741\n hsr_handle_frame+0x6ce/0xa70 net/hsr/hsr_slave.c:84\n __netif_receive_skb_core+0x10b9/0x4380 net/core/dev.c:5966\n __netif_receive_skb_one_core net/core/dev.c:6077 [inline]\n __netif_receive_skb+0x72/0x380 net/core/dev.c:6192\n netif_receive_skb_internal net/core/dev.c:6278 [inline]\n netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337\n tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485\n tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953\n tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0x5c9/0xb30 fs/read_write.c:686\n ksys_write+0x145/0x250 fs/read_write.c:738\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f0449f8e1ff\nCode: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48\nRSP: 002b:00007ffd7ad94c90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007f044a1e5fa0 RCX: 00007f0449f8e1ff\nRDX: 000000000000003e RSI: 0000200000000500 RDI: 00000000000000c8\nRBP: 00007ffd7ad94d20 R08: 0000000000000000 R09: 0000000000000000\nR10: 000000000000003e R11: 0000000000000293 R12: 0000000000000001\nR13: 00007f044a1e5fa0 R14: 00007f044a1e5fa0 R15: 0000000000000003\n </TASK>\n\nAdd a NULL check immediately after __pskb_copy() to handle allocation\nfailures gracefully."}],"providerMetadata":{"dateUpdated":"2026-05-11T21:53:08.027Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3ce95a57d8a1f0e20b637cdeddaaed81831ca819"},{"url":"https://git.kernel.org/stable/c/c851e43b88b40bb7c20176c51cbf4f8c8d960dd9"},{"url":"https://git.kernel.org/stable/c/7be6d25f4d974e44918ba3a5d58ebb9d36879087"},{"url":"https://git.kernel.org/stable/c/8f289fa12926aae44347ca7d490e216555d8f255"},{"url":"https://git.kernel.org/stable/c/1742974c24a9c1f1fd2e5edca0cbaccb720b397a"},{"url":"https://git.kernel.org/stable/c/6220d38a08f8837575cd8f830928b49a3a5a5095"},{"url":"https://git.kernel.org/stable/c/188e0fa5a679570ea35474575e724d8211423d17"}],"title":"net/hsr: fix NULL pointer dereference in prp_get_untagged_frame()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-68776","datePublished":"2026-01-13T15:28:52.766Z","dateReserved":"2025-12-24T10:30:51.035Z","dateUpdated":"2026-07-14T12:44:13.112Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-01-13 16:15:57","lastModifiedDate":"2026-07-14 13:17:59","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"68776","Ordinal":"1","Title":"net/hsr: fix NULL pointer dereference in prp_get_untagged_frame(","CVE":"CVE-2025-68776","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"68776","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/hsr: fix NULL pointer dereference in prp_get_untagged_frame()\n\nprp_get_untagged_frame() calls __pskb_copy() to create frame->skb_std\nbut doesn't check if the allocation failed. If __pskb_copy() returns\nNULL, skb_clone() is called with a NULL pointer, causing a crash:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]\nCPU: 0 UID: 0 PID: 5625 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nRIP: 0010:skb_clone+0xd7/0x3a0 net/core/skbuff.c:2041\nCode: 03 42 80 3c 20 00 74 08 4c 89 f7 e8 23 29 05 f9 49 83 3e 00 0f 85 a0 01 00 00 e8 94 dd 9d f8 48 8d 6b 7e 49 89 ee 49 c1 ee 03 <43> 0f b6 04 26 84 c0 0f 85 d1 01 00 00 44 0f b6 7d 00 41 83 e7 0c\nRSP: 0018:ffffc9000d00f200 EFLAGS: 00010207\nRAX: ffffffff892235a1 RBX: 0000000000000000 RCX: ffff88803372a480\nRDX: 0000000000000000 RSI: 0000000000000820 RDI: 0000000000000000\nRBP: 000000000000007e R08: ffffffff8f7d0f77 R09: 1ffffffff1efa1ee\nR10: dffffc0000000000 R11: fffffbfff1efa1ef R12: dffffc0000000000\nR13: 0000000000000820 R14: 000000000000000f R15: ffff88805144cc00\nFS:  0000555557f6d500(0000) GS:ffff88808d72f000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000555581d35808 CR3: 000000005040e000 CR4: 0000000000352ef0\nCall Trace:\n <TASK>\n hsr_forward_do net/hsr/hsr_forward.c:-1 [inline]\n hsr_forward_skb+0x1013/0x2860 net/hsr/hsr_forward.c:741\n hsr_handle_frame+0x6ce/0xa70 net/hsr/hsr_slave.c:84\n __netif_receive_skb_core+0x10b9/0x4380 net/core/dev.c:5966\n __netif_receive_skb_one_core net/core/dev.c:6077 [inline]\n __netif_receive_skb+0x72/0x380 net/core/dev.c:6192\n netif_receive_skb_internal net/core/dev.c:6278 [inline]\n netif_receive_skb+0x1cb/0x790 net/core/dev.c:6337\n tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485\n tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953\n tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999\n new_sync_write fs/read_write.c:593 [inline]\n vfs_write+0x5c9/0xb30 fs/read_write.c:686\n ksys_write+0x145/0x250 fs/read_write.c:738\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f0449f8e1ff\nCode: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48\nRSP: 002b:00007ffd7ad94c90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007f044a1e5fa0 RCX: 00007f0449f8e1ff\nRDX: 000000000000003e RSI: 0000200000000500 RDI: 00000000000000c8\nRBP: 00007ffd7ad94d20 R08: 0000000000000000 R09: 0000000000000000\nR10: 000000000000003e R11: 0000000000000293 R12: 0000000000000001\nR13: 00007f044a1e5fa0 R14: 00007f044a1e5fa0 R15: 0000000000000003\n </TASK>\n\nAdd a NULL check immediately after __pskb_copy() to handle allocation\nfailures gracefully.","Type":"Description","Title":"net/hsr: fix NULL pointer dereference in prp_get_untagged_frame("}]}}}