{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50817", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:07.130Z", "datePublished": "2025-12-30T12:08:32.866Z", "dateUpdated": "2026-05-11T19:25:41.586Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:25:41.586Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: avoid possible NULL deref in skb_clone()\n\nsyzbot got a crash [1] in skb_clone(), caused by a bug\nin hsr_get_untagged_frame().\n\nWhen/if create_stripped_skb_hsr() returns NULL, we must\nnot attempt to call skb_clone().\n\nWhile we are at it, replace a WARN_ONCE() by netdev_warn_once().\n\n[1]\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f]\nCPU: 1 PID: 754 Comm: syz-executor.0 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nRIP: 0010:skb_clone+0x108/0x3c0 net/core/skbuff.c:1641\nCode: 93 02 00 00 49 83 7c 24 28 00 0f 85 e9 00 00 00 e8 5d 4a 29 fa 4c 8d 75 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 9e 01 00 00\nRSP: 0018:ffffc90003ccf4e0 EFLAGS: 00010207\n\nRAX: dffffc0000000000 RBX: ffffc90003ccf5f8 RCX: ffffc9000c24b000\nRDX: 000000000000000f RSI: ffffffff8751cb13 RDI: 0000000000000000\nRBP: 0000000000000000 R08: 00000000000000f0 R09: 0000000000000140\nR10: fffffbfff181d972 R11: 0000000000000000 R12: ffff888161fc3640\nR13: 0000000000000a20 R14: 000000000000007e R15: ffffffff8dc5f620\nFS: 00007feb621e4700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007feb621e3ff8 CR3: 00000001643a9000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\nhsr_get_untagged_frame+0x4e/0x610 net/hsr/hsr_forward.c:164\nhsr_forward_do net/hsr/hsr_forward.c:461 [inline]\nhsr_forward_skb+0xcca/0x1d50 net/hsr/hsr_forward.c:623\nhsr_handle_frame+0x588/0x7c0 net/hsr/hsr_slave.c:69\n__netif_receive_skb_core+0x9fe/0x38f0 net/core/dev.c:5379\n__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5483\n__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599\nnetif_receive_skb_internal net/core/dev.c:5685 [inline]\nnetif_receive_skb+0x12f/0x8d0 net/core/dev.c:5744\ntun_rx_batched+0x4ab/0x7a0 drivers/net/tun.c:1544\ntun_get_user+0x2686/0x3a00 drivers/net/tun.c:1995\ntun_chr_write_iter+0xdb/0x200 drivers/net/tun.c:2025\ncall_write_iter include/linux/fs.h:2187 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x9e9/0xdd0 fs/read_write.c:584\nksys_write+0x127/0x250 fs/read_write.c:637\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/hsr/hsr_forward.c" ], "versions": [ { "version": "f266a683a4804dc499efc6c2206ef68efed029d0", "lessThan": "ff7ba766758313129794f150bbc4d351b5e17a53", "status": "affected", "versionType": "git" }, { "version": "f266a683a4804dc499efc6c2206ef68efed029d0", "lessThan": "35ece858660eae13ee0242496a1956c39d29418e", "status": "affected", "versionType": "git" }, { "version": "f266a683a4804dc499efc6c2206ef68efed029d0", "lessThan": "c46f2e0fcd1ecfc6046e5cf785ff89f0572f94e4", "status": "affected", "versionType": "git" }, { "version": "f266a683a4804dc499efc6c2206ef68efed029d0", "lessThan": "d8b57135fd9ffe9a5b445350a686442a531c5339", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/hsr/hsr_forward.c" ], "versions": [ { "version": "3.17", "status": "affected" }, { "version": "0", "lessThan": "3.17", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.152", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.76", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.6", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.10.152" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.15.76" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.0.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ff7ba766758313129794f150bbc4d351b5e17a53" }, { "url": "https://git.kernel.org/stable/c/35ece858660eae13ee0242496a1956c39d29418e" }, { "url": "https://git.kernel.org/stable/c/c46f2e0fcd1ecfc6046e5cf785ff89f0572f94e4" }, { "url": "https://git.kernel.org/stable/c/d8b57135fd9ffe9a5b445350a686442a531c5339" } ], "title": "net: hsr: avoid possible NULL deref in skb_clone()", "x_generator": { "engine": "bippy-1.2.0" } } } }