[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2022-50073":6},{"stargazers_count":4,"fetched_at":5},7,"2026-07-31T17:19:26.604Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":30,"epss":9,"epss_history":31,"metrics":32,"affected":39},"DEBIAN-CVE-2022-50073","In the Linux kernel, the following vulnerability has been resolved:  net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null  Fixes a NULL pointer derefence bug triggered from tap driver. When tap_get_user calls virtio_net_hdr_to_skb the skb->dev is null (in tap.c skb->dev is set after the call to virtio_net_hdr_to_skb) virtio_net_hdr_to_skb calls dev_parse_header_protocol which needs skb->dev field to be valid.  The line that trigers the bug is in dev_parse_header_protocol (dev is at offset 0x10 from skb and is stored in RAX register)   if (!dev->header_ops || !dev->header_ops->parse_protocol)   22e1:   mov    0x10(%rbx),%rax   22e5:\t  mov    0x230(%rax),%rax  Setting skb->dev before the call in tap.c fixes the issue.  BUG: kernel NULL pointer dereference, address: 0000000000000230 RIP: 0010:virtio_net_hdr_to_skb.constprop.0+0x335/0x410 [tap] Code: c0 0f 85 b7 fd ff ff eb d4 41 39 c6 77 cf 29 c6 48 89 df 44 01 f6 e8 7a 79 83 c1 48 85 c0 0f 85 d9 fd ff ff eb b7 48 8b 43 10 \u003C48> 8b 80 30 02 00 00 48 85 c0 74 55 48 8b 40 28 48 85 c0 74 4c 48 RSP: 0018:ffffc90005c27c38 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888298f25300 RCX: 0000000000000010 RDX: 0000000000000005 RSI: ffffc90005c27cb6 RDI: ffff888298f25300 RBP: ffffc90005c27c80 R08: 00000000ffffffea R09: 00000000000007e8 R10: ffff88858ec77458 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000014 R14: ffffc90005c27e08 R15: ffffc90005c27cb6 FS:  0000000000000000(0000) GS:ffff88858ec40000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000230 CR3: 0000000281408006 CR4: 00000000003706e0 Call Trace:  tap_get_user+0x3f1/0x540 [tap]  tap_sendmsg+0x56/0x362 [tap]  ? get_tx_bufs+0xc2/0x1e0 [vhost_net]  handle_tx_copy+0x114/0x670 [vhost_net]  handle_tx+0xb0/0xe0 [vhost_net]  handle_tx_kick+0x15/0x20 [vhost_net]  vhost_worker+0x7b/0xc0 [vhost]  ? vhost_vring_call_reset+0x40/0x40 [vhost]  kthread+0xfa/0x120  ? kthread_complete_and_exit+0x20/0x20  ret_from_fork+0x1f/0x30",null,[],[],[],[14],{"_key":15},"CVE-2022-50073",[],[],[],"2025-06-18T11:15:36.173Z","2026-07-03T18:00:07.190548887Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24],{"url":25,"sources":26,"tags":28},"https://security-tracker.debian.org/tracker/CVE-2022-50073",[27],"osv_debian",[29],"Advisory",[],[],[33],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":34,"cvss_v4_0":9},{"baseScore":35,"baseSeverity":9,"vectorString":36,"impactScore":37,"exploitabilityScore":38},5.5,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",6,4.6,[40],{"ecosystem":41,"name":42,"vendor":43,"product":42,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":42,"source":9,"versions":45},"Debian","linux","debian","deb",[46,50,54,57,58],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":51,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":52,"version_end_type":53,"fixed_in":9},"lt5_10_259_1","5.10.259-1","excluding",{"version":55,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9},"lt5_19_6_1","5.19.6-1",{"version":55,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9},{"version":55,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9}]