CVE-2021-47015

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2024-02-28. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

bnxt_en: Fix RX consumer index logic in the error path.

In bnxt_rx_pkt(), the RX buffers are expected to complete in order. If the RX consumer index indicates an out of order buffer completion, it means we are hitting a hardware bug and the driver will abort all remaining RX packets and reset the RX ring. The RX consumer index that we pass to bnxt_discard_rx() is not correct. We should be passing the current index (tmp_raw_cons) instead of the old index (raw_cons). This bug can cause us to be at the wrong index when trying to abort the next RX packet. It can crash like this:

#0 [ffff9bbcdf5c39a8] machine_kexec at ffffffff9b05e007 #1 [ffff9bbcdf5c3a00] __crash_kexec at ffffffff9b111232 #2 [ffff9bbcdf5c3ad0] panic at ffffffff9b07d61e #3 [ffff9bbcdf5c3b50] oops_end at ffffffff9b030978 #4 [ffff9bbcdf5c3b78] no_context at ffffffff9b06aaf0 #5 [ffff9bbcdf5c3bd8] __bad_area_nosemaphore at ffffffff9b06ae2e #6 [ffff9bbcdf5c3c28] bad_area_nosemaphore at ffffffff9b06af24 #7 [ffff9bbcdf5c3c38] __do_page_fault at ffffffff9b06b67e #8 [ffff9bbcdf5c3cb0] do_page_fault at ffffffff9b06bb12 #9 [ffff9bbcdf5c3ce0] page_fault at ffffffff9bc015c5 [exception RIP: bnxt_rx_pkt+237] RIP: ffffffffc0259cdd RSP: ffff9bbcdf5c3d98 RFLAGS: 00010213 RAX: 000000005dd8097f RBX: ffff9ba4cb11b7e0 RCX: ffffa923cf6e9000 RDX: 0000000000000fff RSI: 0000000000000627 RDI: 0000000000001000 RBP: ffff9bbcdf5c3e60 R8: 0000000000420003 R9: 000000000000020d R10: ffffa923cf6ec138 R11: ffff9bbcdf5c3e83 R12: ffff9ba4d6f928c0 R13: ffff9ba4cac28080 R14: ffff9ba4cb11b7f0 R15: ffff9ba4d5a30000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
15th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 28, 2024

Last Modified

January 8, 2025

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.10.38-1: fixed in 5.10.38-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.10.38-1: fixed in 5.10.38-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.10.38-1: fixed in 5.10.38-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.10.38-1: fixed in 5.10.38-1
—

Data Freshness Timeline

(refreshed 7× in last 7d / 32× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 189 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 93 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-10-21 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  3. 2026-10-20 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  4. 2026-10-19 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  5. 2026-10-18 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-10-18 08:50 UTCEG score recompute
  7. 2026-10-17 16:29 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-10-16 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-10-15 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-10-14 16:29 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  11. 2026-10-13 16:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  12. 2026-10-12 19:05 UTCEG score recompute
  13. 2026-10-12 16:30 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  14. 2026-10-11 23:31 UTCEG score recompute
  15. 2026-10-11 22:24 UTCOSV refresh
  16. 2026-10-11 13:44 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  17. 2026-10-10 19:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-09 20:04 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-10-08 16:40 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-06 15:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-10-05 17:40 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-10-04 23:19 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-10-03 14:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-02 16:23 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 71 more
  1. 2026-09-30 15:45 UTCEG score recompute
  2. 2026-09-30 15:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-09-29 15:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-09-28 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  5. 2026-09-26 15:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-09-26 00:21 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  7. 2026-09-24 14:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  8. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  9. 2026-09-22 14:44 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  10. 2026-09-22 06:46 UTCOSV refresh
  11. 2026-09-21 20:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  12. 2026-09-20 20:13 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  13. 2026-09-19 15:38 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  14. 2026-09-18 19:24 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  15. 2026-09-17 19:23 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  16. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  17. 2026-09-15 03:06 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  18. 2026-09-12 14:57 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  19. 2026-09-11 14:49 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  20. 2026-09-11 09:33 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  21. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  22. 2026-09-07 15:58 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  23. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  24. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  25. 2026-09-04 13:57 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  26. 2026-09-04 05:03 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  27. 2026-09-03 04:29 UTCOSV refresh
  28. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  29. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  30. 2026-08-30 19:14 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  31. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  32. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  33. 2026-08-27 14:22 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  34. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  35. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  36. 2026-08-24 14:13 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  37. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  38. 2026-08-20 22:52 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  39. 2026-08-19 17:01 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  40. 2026-08-18 13:45 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  41. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  42. 2026-08-16 17:26 UTCOSV refresh
  43. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  44. 2026-08-16 02:11 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  45. 2026-08-15 01:27 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  46. 2026-08-13 21:57 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  47. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  48. 2026-08-11 13:38 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  49. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  50. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  51. 2026-08-07 16:24 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  52. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  53. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  54. 2026-08-04 15:06 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  55. 2026-08-04 10:34 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  56. 2026-08-03 10:33 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  57. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  58. 2026-08-01 11:06 UTCOSV refresh
  59. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  60. 2026-07-30 16:25 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  61. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  62. 2026-07-28 15:33 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  63. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  64. 2026-07-25 14:15 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  65. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  66. 2026-07-23 02:06 UTCEG score recompute
  67. 2026-07-22 22:52 UTCEG score recompute
  68. 2026-07-22 14:06 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  69. 2026-07-21 15:22 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  70. 2026-07-20 17:05 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  71. 2026-07-19 14:29 UTCEPSS rescoreEPSS 0.2% · 16th percentile

Frequently asked(5)

What is CVE-2021-47015?
CVE-2021-47015 is a medium-severity vulnerability; its CVE record was published on February 28, 2024. In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix RX consumer index logic in the error path. In bnxtrxpkt(), the RX buffers are expected to complete in order. If the RX consumer index indicates an out of order buffer completion, it means we are hitting a hardware bug…
When was the CVE record for CVE-2021-47015 published?
The CVE record for CVE-2021-47015 was published on February 28, 2024. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of January 8, 2025; the record at its source may have been updated since.
Is CVE-2021-47015 actively exploited?
CVE-2021-47015 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-47015?
CVE-2021-47015 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2021-47015?
A fix for CVE-2021-47015 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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