CVE catalog

CVE-2022-50073

linux: CVE-2022-50073

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: Nov 9, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.21% · Oct 25, 2026

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: 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 <48> 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

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	linux	sid	`7.2.12-1`	fixed
Debian	linux	forky	`7.2.12-1`	fixed
Debian	linux	trixie	`6.12.107-1`	fixed
Debian	linux	trixie-security	`6.12.113-1`	fixed
Debian	linux	bookworm	`6.1.176-1`	fixed
Debian	linux	bookworm-security	`6.1.190-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	linux	source	sid	`5.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	forky	`5.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	trixie	`5.19.6-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	bookworm	`5.19.6-1`	not yet assigned	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[bpftool]Unknown
Source package: [linux]
Details (6)
- 7.1.0+6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 7.5.0+6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 7.1.0+6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[hyperv-daemons]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[intel-sdsi]Unknown
Source package: [linux]
Details (1)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[libcpupower1]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[libcpupower-dev]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-bpf-dev]Unknown
Source package: [linux]
Details (2)
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-compiler-gcc-12-x86]Unknown
Source package: [linux]
Details (2)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-config-6.1]Unknown
Source package: [linux]
Details (4)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-cpupower]Unknown
Source package: [linux]
Details (6)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · amd64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · arm64 · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · amd64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · arm64 · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-doc]Unknown
Source package: [linux]
Details (32)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.43-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.57-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.63-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.69-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.73-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.74-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.85-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.86-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.88-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.90-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.90-2~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.94-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.12.95-1~bpo12+1 · all · bookworm-backports
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-doc-6.1]Unknown
Source package: [linux]
Details (6)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.176-1 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.180-1 · all · bookworm-security
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-cloud-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-common]Unknown
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-common-rt]Unknown
Source package: [linux]
Details (2)
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
- 6.1.170-3 · all · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-47-rt-arm64]Unknown
Source package: [linux]
Details (1)
- 6.1.170-3 · arm64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm
[linux-headers-6.1.0-50-amd64]Unknown
Source package: [linux]
Details (1)
- 6.1.176-1 · amd64 · bookworm
  Fixed · Fixed: 5.19.6-1
  dsa · linux · debian · bookworm

Next results

Observed: Oct 23, 2026, 7:07:43 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]