CVE-2023-53432

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-18. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

firewire: net: fix use after free in fwnet_finish_incoming_packet()

The netif_rx() function frees the skb so we can't dereference it to save the skb->len.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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 (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
10th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 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 total (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

September 18, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available.
Web page

firewire: net: fix use after free in fwnet_finish_incoming_packet() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9860921ab4521252dc39bb21b9c936bd09a00982
Web page

firewire: net: fix use after free in fwnet_finish_incoming_packet() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9040adc38cf6bfbb77034d558ac2c52f70d840ac
Web page

firewire: net: fix use after free in fwnet_finish_incoming_packet() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3ff256751a2853e1ffaa36958ff933ccc98c6cb5
Web page

firewire: net: fix use after free in fwnet_finish_incoming_packet() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2ea70379e4f4efa95c9daa7f3f9bdd4d40aec927

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
linuxKernel @ 5.15.128 (fixes >=2.6.31)—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 rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (498 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.27-1 ... 6.1.38-4~bpo11+1 (8 versions)
  • every version up to 6.1.52-1: fixed in 6.1.52-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.4.13-1: fixed in 6.4.13-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.4.13-1: fixed in 6.4.13-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 27× 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 89 of 169 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. 11 repeat rows among the latest 100 are merged into the row they repeat. The 80 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-10-12 18:12 UTCEG score recompute
  4. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-10-11 21:37 UTCEG score recompute
  6. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  7. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-09-30 16:37 UTCEG score recompute
  17. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-09-26 20:42 UTCOSV refresh
  21. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  24. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 10th percentile
Show 64 more
  1. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  6. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  7. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-09-07 06:48 UTCOSV refresh
  11. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  13. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-09-01 04:36 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  22. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  24. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  26. 2026-08-20 16:01 UTCOSV refresh
  27. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  28. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  29. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  31. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  32. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  33. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  34. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  35. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  36. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  37. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  38. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  39. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  40. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  41. 2026-08-05 10:19 UTCEG score recompute
  42. 2026-08-05 10:19 UTCGHSA enrichmentGHSA-vgfh-vgxv-c838 · GitHub severity HIGH · GitHub CVSS 7.8
  43. 2026-08-04 10:58 UTCEG score recompute
  44. 2026-08-04 10:58 UTCGHSA enrichmentGHSA-vgfh-vgxv-c838 · GitHub severity HIGH · GitHub CVSS 7.8
  45. 2026-08-04 10:36 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  46. 2026-08-04 09:30 UTCEG score recompute
  47. 2026-08-04 09:30 UTCGHSA enrichmentGHSA-vgfh-vgxv-c838 · GitHub severity HIGH · GitHub CVSS 7.8
  48. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  49. 2026-08-02 02:25 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  50. 2026-08-01 04:14 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  51. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  52. 2026-07-30 01:29 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  53. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-07-26 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  55. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-07-24 14:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  57. 2026-07-23 19:41 UTCOSV refresh
  58. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  59. 2026-07-23 02:29 UTCEG score recompute
  60. 2026-07-22 23:16 UTCEG score recompute
  61. 2026-07-22 14:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  62. 2026-07-21 15:23 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  63. 2026-07-20 17:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-07-19 14:29 UTCEPSS rescoreEPSS 0.1% · 3rd percentile

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Frequently asked(5)

What is CVE-2023-53432?
CVE-2023-53432 is a high-severity vulnerability; its CVE record was published on September 18, 2025. In the Linux kernel, the following vulnerability has been resolved: firewire: net: fix use after free in fwnetfinishincoming_packet() The netif_rx() function frees the skb so we can't dereference it to save the skb->len.
When was the CVE record for CVE-2023-53432 published?
The CVE record for CVE-2023-53432 was published on September 18, 2025. 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 August 5, 2026; the record at its source may have been updated since.
Is CVE-2023-53432 actively exploited?
CVE-2023-53432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-53432?
CVE-2023-53432 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53432?
A fix for CVE-2023-53432 is available: update to the fixed version the vendor names in its advisory.

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