CVE-2022-50865

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2025-12-30. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

December 30, 2025

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

tcp: fix a signed-integer-overflow bug in tcp_add_backlog() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f
generic

tcp: fix a signed-integer-overflow bug in tcp_add_backlog() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f
generic

tcp: fix a signed-integer-overflow bug in tcp_add_backlog() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898
generic

tcp: fix a signed-integer-overflow bug in tcp_add_backlog() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538
generic

tcp: fix a signed-integer-overflow bug in tcp_add_backlog() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368

Vendor Advisories for CVE-2022-50865(12)

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

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-193.187.1.el8_22026-02-26redhat
redhatkernel-0:4.18.0-305.186.1.el8_42026-02-25redhat
redhatkernel-0:4.18.0-477.130.1.el8_82026-02-25redhat
redhatkernel-rt-0:5.14.0-70.165.1.rt21.237.el9_02026-02-11redhat
redhatkernel-0:4.18.0-372.179.1.el8_62026-02-11redhat
redhatkernel-0:5.14.0-70.165.1.el9_02026-02-11redhat
redhatkernel-0:5.14.0-284.155.1.el9_22026-02-04redhat
redhatkernel-rt-0:5.14.0-284.155.1.rt14.440.el9_22026-02-04redhat
redhatkernel-0:4.18.0-553.100.1.el8_102026-02-02redhat
redhatkernel-rt-0:4.18.0-553.100.1.rt7.441.el8_102026-02-02redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 5.4.278—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 7× in last 7d / 39× 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 202 total refreshes for this CVE.

  1. 2026-09-04 13:57 UTCEPSS rescore
  2. 2026-09-04 05:04 UTCEPSS rescore
  3. 2026-09-02 14:09 UTCEPSS rescore
  4. 2026-09-01 13:51 UTCEPSS rescore
  5. 2026-09-01 01:34 UTCOSV refresh
  6. 2026-08-30 19:15 UTCEPSS rescore
  7. 2026-08-30 01:19 UTCEPSS rescore
  8. 2026-08-28 21:38 UTCEPSS rescore
  9. 2026-08-27 14:22 UTCEPSS rescore
  10. 2026-08-26 14:43 UTCEPSS rescore
  11. 2026-08-25 13:46 UTCEPSS rescore
  12. 2026-08-23 00:17 UTCEPSS rescore
  13. 2026-08-21 23:46 UTCEPSS rescore
  14. 2026-08-20 22:53 UTCEPSS rescore
  15. 2026-08-19 17:01 UTCEPSS rescore
  16. 2026-08-18 13:45 UTCEPSS rescore
  17. 2026-08-17 13:44 UTCEPSS rescore
  18. 2026-08-16 14:53 UTCEPSS rescore
  19. 2026-08-16 02:12 UTCEPSS rescore
  20. 2026-08-15 01:27 UTCEPSS rescore
  21. 2026-08-15 01:22 UTCEG score recompute
  22. 2026-08-15 01:22 UTCVendor advisory
  23. 2026-08-15 01:22 UTCGHSA enrichment
  24. 2026-08-13 21:58 UTCEPSS rescore
  25. 2026-08-12 13:48 UTCEPSS rescore
Show 75 more
  1. 2026-08-09 22:25 UTCEG score recompute
  2. 2026-08-09 22:25 UTCVendor advisory
  3. 2026-08-09 22:25 UTCGHSA enrichment
  4. 2026-08-09 13:44 UTCEPSS rescore
  5. 2026-08-09 13:44 UTCEPSS rescore
  6. 2026-08-08 16:34 UTCEPSS rescore
  7. 2026-08-08 04:36 UTCEG score recompute
  8. 2026-08-08 04:36 UTCVendor advisory
  9. 2026-08-08 04:36 UTCGHSA enrichment
  10. 2026-08-07 16:24 UTCEPSS rescore
  11. 2026-08-06 13:44 UTCEPSS rescore
  12. 2026-08-06 06:48 UTCEG score recompute
  13. 2026-08-06 06:48 UTCVendor advisory
  14. 2026-08-06 06:48 UTCGHSA enrichment
  15. 2026-08-05 19:15 UTCEPSS rescore
  16. 2026-08-05 09:16 UTCEG score recompute
  17. 2026-08-05 09:16 UTCVendor advisory
  18. 2026-08-05 09:16 UTCGHSA enrichment
  19. 2026-08-04 15:07 UTCEPSS rescore
  20. 2026-08-04 10:35 UTCEPSS rescore
  21. 2026-08-04 10:32 UTCEG score recompute
  22. 2026-08-04 10:32 UTCVendor advisory
  23. 2026-08-04 10:32 UTCGHSA enrichment
  24. 2026-08-04 09:21 UTCEG score recompute▲ 7.50
  25. 2026-08-04 09:21 UTCVendor advisory
  26. 2026-08-04 09:21 UTCGHSA enrichment
  27. 2026-08-04 09:20 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  28. 2026-08-03 10:33 UTCEPSS rescore
  29. 2026-08-02 02:24 UTCEPSS rescore
  30. 2026-08-01 04:13 UTCEPSS rescore
  31. 2026-08-01 04:13 UTCEPSS rescore
  32. 2026-07-30 16:25 UTCEPSS rescore
  33. 2026-07-30 01:28 UTCEPSS rescore
  34. 2026-07-28 15:34 UTCEPSS rescore
  35. 2026-07-27 03:09 UTCOSV refresh
  36. 2026-07-26 14:52 UTCEPSS rescore
  37. 2026-07-26 14:52 UTCEPSS rescore
  38. 2026-07-25 14:16 UTCEPSS rescore
  39. 2026-07-24 14:15 UTCEPSS rescore
  40. 2026-07-23 14:16 UTCEPSS rescore
  41. 2026-07-23 14:16 UTCEPSS rescore
  42. 2026-07-23 02:17 UTCEG score recompute
  43. 2026-07-22 23:04 UTCEG score recompute
  44. 2026-07-22 14:06 UTCEPSS rescore
  45. 2026-07-22 14:06 UTCEPSS rescore
  46. 2026-07-21 15:23 UTCEPSS rescore
  47. 2026-07-21 15:23 UTCEPSS rescore
  48. 2026-07-20 17:05 UTCEPSS rescore
  49. 2026-07-19 14:29 UTCEPSS rescore
  50. 2026-07-19 14:29 UTCEPSS rescore
  51. 2026-07-19 02:27 UTCEPSS rescore
  52. 2026-07-19 02:27 UTCEPSS rescore
  53. 2026-07-18 10:03 UTCEPSS rescore
  54. 2026-07-18 10:03 UTCEPSS rescore
  55. 2026-07-16 17:00 UTCEPSS rescore
  56. 2026-07-15 16:56 UTCEPSS rescore
  57. 2026-07-15 16:56 UTCEPSS rescore
  58. 2026-07-15 01:58 UTCEPSS rescore
  59. 2026-07-15 01:58 UTCEPSS rescore
  60. 2026-07-13 22:28 UTCEPSS rescore
  61. 2026-07-13 22:28 UTCEPSS rescore
  62. 2026-07-13 06:11 UTCEPSS rescore
  63. 2026-07-13 06:11 UTCEPSS rescore
  64. 2026-07-12 05:44 UTCEPSS rescore
  65. 2026-07-11 08:25 UTCEPSS rescore
  66. 2026-07-11 08:25 UTCEPSS rescore
  67. 2026-07-09 21:47 UTCOSV refresh
  68. 2026-07-09 19:08 UTCEPSS rescore
  69. 2026-07-08 15:13 UTCEPSS rescore
  70. 2026-07-07 13:44 UTCEPSS rescore
  71. 2026-07-06 16:25 UTCEPSS rescore
  72. 2026-07-06 02:21 UTCEPSS rescore
  73. 2026-07-05 02:28 UTCEPSS rescore
  74. 2026-07-04 06:29 UTCEPSS rescore
  75. 2026-07-01 15:04 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2022-50865?
CVE-2022-50865 is a high vulnerability published on December 30, 2025. In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcpaddbacklog() The type of skrcvbuf and sksndbuf in struct sock is int, and in tcpaddbacklog(), the variable limit is caculated by adding skrcvbuf, sksndbuf and 64 * 1024, it may exceed…
When was CVE-2022-50865 disclosed?
CVE-2022-50865 was first published in the National Vulnerability Database on December 30, 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-2022-50865 actively exploited?
CVE-2022-50865 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.3% of all scored CVEs.
What is the CVSS score of CVE-2022-50865?
CVE-2022-50865 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2022-50865?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50865, 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.

Dependency Blast Radius

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