CVE-2022-49877

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-05-01. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues

When running test_sockmap selftests, the following warning appears:

WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Call Trace: inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae

The root case is in commit 84472b436e76 ("bpf, sockmap: Fix more uncharged while msg has more_data"), where I used msg->sg.size to replace the tosend, causing breakage:

if (msg->apply_bytes && msg->apply_bytes < tosend) tosend = psock->apply_bytes;

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

May 1, 2025

Last Modified

November 10, 2025

References (5)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.4.225—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.

Data Freshness Timeline

(refreshed 7× in last 7d / 38× 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 101 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-04 15:07 UTCEPSS rescore
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  10. 2026-07-30 16:25 UTCEPSS rescore
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  15. 2026-07-24 14:15 UTCEPSS rescore
  16. 2026-07-24 07:41 UTCOSV refresh
  17. 2026-07-23 14:16 UTCEPSS rescore
  18. 2026-07-23 14:16 UTCEPSS rescore
  19. 2026-07-23 02:16 UTCEG score recompute
  20. 2026-07-22 23:04 UTCEG score recompute
  21. 2026-07-22 14:06 UTCEPSS rescore
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  25. 2026-07-20 17:05 UTCEPSS rescore
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  1. 2026-07-19 14:29 UTCEPSS rescore
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  3. 2026-07-19 02:27 UTCEPSS rescore
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  5. 2026-07-16 17:00 UTCEPSS rescore
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  8. 2026-07-13 06:11 UTCEPSS rescore
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  10. 2026-07-12 05:44 UTCEPSS rescore
  11. 2026-07-11 08:25 UTCEPSS rescore
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  13. 2026-07-09 19:08 UTCEPSS rescore
  14. 2026-07-08 15:13 UTCEPSS rescore
  15. 2026-07-07 13:44 UTCEPSS rescore
  16. 2026-07-07 02:51 UTCOSV refresh
  17. 2026-07-06 16:25 UTCEPSS rescore
  18. 2026-07-06 02:21 UTCEPSS rescore
  19. 2026-07-05 02:28 UTCEPSS rescore
  20. 2026-07-04 06:29 UTCEPSS rescore
  21. 2026-07-01 15:04 UTCEPSS rescore
  22. 2026-06-30 23:21 UTCEPSS rescore
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  24. 2026-06-29 14:04 UTCEPSS rescore
  25. 2026-06-28 14:06 UTCEPSS rescore
  26. 2026-06-28 04:54 UTCEPSS rescore
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  28. 2026-06-27 03:07 UTCEPSS rescore
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  30. 2026-06-25 13:48 UTCEPSS rescore
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  39. 2026-06-19 19:24 UTCEPSS rescore
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  41. 2026-06-18 17:51 UTCEPSS rescore
  42. 2026-06-18 17:51 UTCEPSS rescore
  43. 2026-06-18 14:05 UTCOSV refresh
  44. 2026-06-17 17:51 UTCEPSS rescore
  45. 2026-06-17 17:51 UTCEPSS rescore
  46. 2026-06-16 17:51 UTCEPSS rescore
  47. 2026-06-16 17:51 UTCEPSS rescore
  48. 2026-06-15 17:47 UTCEPSS rescore
  49. 2026-06-14 23:16 UTCEPSS rescore
  50. 2026-06-13 22:59 UTCEPSS rescore
  51. 2026-06-12 23:10 UTCEPSS rescore
  52. 2026-06-12 23:10 UTCEPSS rescore
  53. 2026-06-11 13:58 UTCEPSS rescore
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  55. 2026-06-10 13:21 UTCEPSS rescore
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  59. 2026-06-07 15:23 UTCEPSS rescore
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  61. 2026-06-06 13:46 UTCEPSS rescore
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  63. 2026-06-05 22:46 UTCEPSS rescore
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  65. 2026-06-05 06:09 UTCEPSS rescore
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  67. 2026-06-04 13:11 UTCEPSS rescore
  68. 2026-06-02 20:12 UTCEPSS rescore
  69. 2026-06-02 20:12 UTCEPSS rescore
  70. 2026-06-01 13:50 UTCEPSS rescore
  71. 2026-06-01 13:50 UTCEPSS rescore
  72. 2026-05-31 22:29 UTCEPSS rescore
  73. 2026-05-31 22:29 UTCEPSS rescore
  74. 2026-05-30 06:26 UTCEG score recompute
  75. 2026-05-30 06:26 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2022-49877?
CVE-2022-49877 is a medium vulnerability published on May 1, 2025. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix the sk->skforwardalloc warning of skstreamkill_queues When running test_sockmap selftests, the following warning appears: WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 skstreamkill_queues+0xd3/0xf0 Call Trace:…
When was CVE-2022-49877 disclosed?
CVE-2022-49877 was first published in the National Vulnerability Database on May 1, 2025, with the most recent update on November 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-49877 actively exploited?
CVE-2022-49877 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 91.3% of all scored CVEs.
What is the CVSS score of CVE-2022-49877?
CVE-2022-49877 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2022-49877?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49877, 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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