CVE-2022-50780

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-24. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed

When the ops_init() interface is invoked to initialize the net, but ops->init() fails, data is released. However, the ptr pointer in net->gen is invalid. In this case, when nfqnl_nf_hook_drop() is invoked to release the net, invalid address access occurs.

The process is as follows: setup_net() ops_init() data = kzalloc(...) ---> alloc "data" net_assign_generic() ---> assign "date" to ptr in net->gen ... ops->init() ---> failed ... kfree(data); ---> ptr in net->gen is invalid ... ops_exit_list() ... nfqnl_nf_hook_drop() *q = nfnl_queue_pernet(net) ---> q is invalid

The following is the Call Trace information: BUG: KASAN: use-after-free in nfqnl_nf_hook_drop+0x264/0x280 Read of size 8 at addr ffff88810396b240 by task ip/15855 Call Trace:

dump_stack_lvl+0x8e/0xd1 print_report+0x155/0x454 kasan_report+0xba/0x1f0 nfqnl_nf_hook_drop+0x264/0x280 nf_queue_nf_hook_drop+0x8b/0x1b0 __nf_unregister_net_hook+0x1ae/0x5a0 nf_unregister_net_hooks+0xde/0x130 ops_exit_list+0xb0/0x170 setup_net+0x7ac/0xbd0 copy_net_ns+0x2e6/0x6b0 create_new_namespaces+0x382/0xa50 unshare_nsproxy_namespaces+0xa6/0x1c0 ksys_unshare+0x3a4/0x7e0 __x64_sys_unshare+0x2d/0x40 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Allocated by task 15855: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0xa1/0xb0 __kmalloc+0x49/0xb0 ops_init+0xe7/0x410 setup_net+0x5aa/0xbd0 copy_net_ns+0x2e6/0x6b0 create_new_namespaces+0x382/0xa50 unshare_nsproxy_namespaces+0xa6/0x1c0 ksys_unshare+0x3a4/0x7e0 __x64_sys_unshare+0x2d/0x40 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Freed by task 15855: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x2a/0x40 ____kasan_slab_free+0x155/0x1b0 slab_free_freelist_hook+0x11b/0x220 __kmem_cache_free+0xa4/0x360 ops_init+0xb9/0x410 setup_net+0x5aa/0xbd0 copy_net_ns+0x2e6/0x6b0 create_new_namespaces+0x382/0xa50 unshare_nsproxy_namespaces+0xa6/0x1c0 ksys_unshare+0x3a4/0x7e0 __x64_sys_unshare+0x2d/0x40 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

December 24, 2025

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d266935ac43d57586e311a087510fe6a084af742
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c3edc6e808209aa705185f732e682a370981ced1
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a1e18acb0246bfb001b08b8b1b830b5ec92a0f13
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97ad240fd9aa9214497d14af2b91608e20856cac
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a2ea549be94924364f6911227d99be86e8cf34a
generic

net: fix UAF issue in nfqnl_nf_hook_drop() when ops_init() failed - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4a4df5e78712de39d6f90d6a64b5eb48dca03bd5

Vendor Advisories for CVE-2022-50780(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
linuxKernel @ 4.19.264—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (22 versions)5.10.158-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.7-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.7-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.0.7-1—

Data Freshness Timeline

(refreshed 5× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 201 total refreshes for this CVE.

  1. 2026-09-16 14:05 UTCEPSS rescore
  2. 2026-09-16 05:11 UTCEPSS rescore
  3. 2026-09-15 03:07 UTCEPSS rescore
  4. 2026-09-14 05:49 UTCOSV refresh
  5. 2026-09-13 16:44 UTCEPSS rescore
  6. 2026-09-11 09:34 UTCEPSS rescore
  7. 2026-09-08 21:57 UTCEPSS rescore
  8. 2026-09-07 15:59 UTCEPSS rescore
  9. 2026-09-06 13:45 UTCEPSS rescore
  10. 2026-09-05 15:25 UTCEPSS rescore
  11. 2026-09-04 13:57 UTCEPSS rescore
  12. 2026-09-04 05:04 UTCEPSS rescore
  13. 2026-09-02 14:09 UTCEPSS rescore
  14. 2026-09-01 13:51 UTCEPSS rescore
  15. 2026-08-30 19:15 UTCEPSS rescore
  16. 2026-08-30 01:19 UTCEPSS rescore
  17. 2026-08-28 21:38 UTCEPSS rescore
  18. 2026-08-27 14:22 UTCEPSS rescore
  19. 2026-08-26 14:43 UTCEPSS rescore
  20. 2026-08-26 06:43 UTCOSV refresh
  21. 2026-08-25 13:46 UTCEPSS rescore
  22. 2026-08-21 23:46 UTCEPSS rescore
  23. 2026-08-20 22:53 UTCEPSS rescore
  24. 2026-08-19 17:01 UTCEPSS rescore
  25. 2026-08-18 13:45 UTCEPSS rescore
Show 75 more
  1. 2026-08-17 13:44 UTCEPSS rescore
  2. 2026-08-16 14:53 UTCEPSS rescore
  3. 2026-08-16 02:12 UTCEPSS rescore
  4. 2026-08-15 01:27 UTCEPSS rescore
  5. 2026-08-13 21:58 UTCEPSS rescore
  6. 2026-08-12 13:48 UTCEPSS rescore
  7. 2026-08-09 22:49 UTCEG score recompute
  8. 2026-08-09 22:49 UTCVendor advisory
  9. 2026-08-09 22:49 UTCGHSA enrichment
  10. 2026-08-09 13:44 UTCEPSS rescore
  11. 2026-08-09 13:44 UTCEPSS rescore
  12. 2026-08-08 16:34 UTCEPSS rescore
  13. 2026-08-08 05:27 UTCEG score recompute
  14. 2026-08-08 05:27 UTCVendor advisory
  15. 2026-08-08 05:27 UTCGHSA enrichment
  16. 2026-08-07 16:24 UTCEPSS rescore
  17. 2026-08-06 13:44 UTCEPSS rescore
  18. 2026-08-06 07:12 UTCEG score recompute
  19. 2026-08-06 07:12 UTCVendor advisory
  20. 2026-08-06 07:12 UTCGHSA enrichment
  21. 2026-08-05 19:15 UTCEPSS rescore
  22. 2026-08-05 09:16 UTCEG score recompute
  23. 2026-08-05 09:16 UTCVendor advisory
  24. 2026-08-05 09:16 UTCGHSA enrichment
  25. 2026-08-04 15:07 UTCEPSS rescore
  26. 2026-08-04 10:50 UTCEG score recompute
  27. 2026-08-04 10:50 UTCVendor advisory
  28. 2026-08-04 10:50 UTCGHSA enrichment
  29. 2026-08-04 10:35 UTCEPSS rescore
  30. 2026-08-04 09:25 UTCEG score recompute▲ 7.80
  31. 2026-08-04 09:25 UTCVendor advisory
  32. 2026-08-04 09:25 UTCGHSA enrichment
  33. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  34. 2026-08-03 10:33 UTCEPSS rescore
  35. 2026-08-02 02:24 UTCEPSS rescore
  36. 2026-08-01 04:13 UTCEPSS rescore
  37. 2026-08-01 04:13 UTCEPSS rescore
  38. 2026-07-30 01:28 UTCEPSS rescore
  39. 2026-07-28 15:34 UTCEPSS rescore
  40. 2026-07-27 03:39 UTCOSV refresh
  41. 2026-07-26 14:52 UTCEPSS rescore
  42. 2026-07-26 14:52 UTCEPSS rescore
  43. 2026-07-25 14:16 UTCEPSS rescore
  44. 2026-07-24 14:15 UTCEPSS rescore
  45. 2026-07-23 14:16 UTCEPSS rescore
  46. 2026-07-23 14:16 UTCEPSS rescore
  47. 2026-07-23 02:17 UTCEG score recompute
  48. 2026-07-22 23:04 UTCEG score recompute
  49. 2026-07-22 14:06 UTCEPSS rescore
  50. 2026-07-22 14:06 UTCEPSS rescore
  51. 2026-07-21 15:23 UTCEPSS rescore
  52. 2026-07-21 15:23 UTCEPSS rescore
  53. 2026-07-20 17:05 UTCEPSS rescore
  54. 2026-07-19 14:29 UTCEPSS rescore
  55. 2026-07-19 14:29 UTCEPSS rescore
  56. 2026-07-19 02:27 UTCEPSS rescore
  57. 2026-07-19 02:27 UTCEPSS rescore
  58. 2026-07-18 10:03 UTCEPSS rescore
  59. 2026-07-18 10:03 UTCEPSS rescore
  60. 2026-07-16 17:00 UTCEPSS rescore
  61. 2026-07-15 16:56 UTCEPSS rescore
  62. 2026-07-15 16:56 UTCEPSS rescore
  63. 2026-07-15 01:58 UTCEPSS rescore
  64. 2026-07-15 01:58 UTCEPSS rescore
  65. 2026-07-13 06:11 UTCEPSS rescore
  66. 2026-07-13 06:11 UTCEPSS rescore
  67. 2026-07-12 05:44 UTCEPSS rescore
  68. 2026-07-11 08:25 UTCEPSS rescore
  69. 2026-07-11 08:25 UTCEPSS rescore
  70. 2026-07-09 22:17 UTCOSV refresh
  71. 2026-07-09 19:08 UTCEPSS rescore
  72. 2026-07-08 15:13 UTCEPSS rescore
  73. 2026-07-07 13:44 UTCEPSS rescore
  74. 2026-07-06 02:21 UTCEPSS rescore
  75. 2026-07-05 02:28 UTCEPSS rescore

Frequently asked(5)

What is CVE-2022-50780?
CVE-2022-50780 is a high vulnerability published on December 24, 2025. In the Linux kernel, the following vulnerability has been resolved: net: fix UAF issue in nfqnlnfhookdrop() when opsinit() failed When the ops_init() interface is invoked to initialize the net, but ops->init() fails, data is released. However, the ptr pointer in net->gen is invalid. In this case,…
When was CVE-2022-50780 disclosed?
CVE-2022-50780 was first published in the National Vulnerability Database on December 24, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50780 actively exploited?
CVE-2022-50780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.8% of all scored CVEs.
What is the CVSS score of CVE-2022-50780?
CVE-2022-50780 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50780, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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