CVE-2022-2503

MEDIUMNVD 6.76.7
EchelonGraph scoreMEDIUM confidence

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

Score 6.7 from GitHub Security Advisory published 2022-08-13. NVD baseline CVSS 6.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated
6.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.7Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5

CVSS v3
6.7
EG Score
6.7MEDIUMmedium confidence
EG Risk
46
EG Risk 46/100

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)
Severity67% × 45%
Impact severity (EG Severity): CVSS 6.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
35th
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 (6.7): severity, escalated by confirmed exploitation. This CVE's 6.7 is its impact severity (EG Severity), not escalated.

EG Severity
6.7 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% 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 low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 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 low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (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

August 12, 2022

Last Modified

October 14, 2026

Advisory Details (3)

Auto-updated Oct 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Linux: LoadPin bypass via dm-verity table reload · Advisory · google/security-research · GitHub

https://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m

Patch Availability(19)

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 ... 5.10.92-2 (13 versions)
  • every version up to 5.10.120-1: fixed in 5.10.120-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.18.2-1: fixed in 5.18.2-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.18.2-1: fixed in 5.18.2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.18.2-1: fixed in 5.18.2-1
—

Weakness Classification(2)

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

Additional Vendor Advisories

(14)

Data Freshness Timeline

(refreshed 7× in last 7d / 40× 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 98 of 190 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 92 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 0.4% · 35th percentile
  2. 2026-10-22 16:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-21 16:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-10-20 16:29 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-19 16:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  6. 2026-10-18 08:41 UTCEG score recompute
  7. 2026-10-17 16:29 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-10-16 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-10-15 16:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-10-14 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-14 13:44 UTCEG score recompute▼ 0.20
  12. 2026-10-14 13:44 UTCVendor advisory
  13. 2026-10-14 13:43 UTCGHSA enrichmentGHSA-j7xr-c5x7-xr2p · GitHub CVSS 6.7
  14. 2026-10-14 13:25 UTCNVD updateCVSS v3 → 6.7
  15. 2026-10-14 13:17 UTCEG score recompute
  16. 2026-10-14 13:17 UTCVendor advisory
  17. 2026-10-14 13:16 UTCGHSA enrichmentGHSA-j7xr-c5x7-xr2p · GitHub CVSS 6.7
  18. 2026-10-13 16:29 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-12 18:58 UTCEG score recompute
  20. 2026-10-12 16:30 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-11 23:24 UTCEG score recompute
  22. 2026-10-11 13:44 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-10-10 19:56 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-10-09 20:04 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-08 16:40 UTCEPSS rescoreEPSS 0.4% · 30th percentile
Show 73 more
  1. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-10-06 15:14 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-10-05 17:40 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-10-04 23:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-10-02 16:23 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-09-30 15:51 UTCEG score recompute
  8. 2026-09-30 15:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-09-29 15:16 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-09-28 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-09-26 15:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-09-24 14:42 UTCOSV refresh
  15. 2026-09-24 14:00 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  16. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-09-22 14:44 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-09-20 20:13 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-09-19 15:38 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-09-18 19:24 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-09-15 03:06 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-09-12 14:57 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-09-11 14:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  26. 2026-09-11 09:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  27. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  28. 2026-09-07 15:58 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  29. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  30. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  31. 2026-09-05 06:48 UTCOSV refresh
  32. 2026-09-04 13:57 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  33. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  34. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  35. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  36. 2026-08-30 19:14 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  37. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  38. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  39. 2026-08-27 14:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  40. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  41. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  42. 2026-08-24 14:13 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  43. 2026-08-23 00:16 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  44. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  45. 2026-08-20 22:52 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  46. 2026-08-19 17:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  47. 2026-08-18 17:28 UTCOSV refresh
  48. 2026-08-18 13:45 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  49. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  50. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  51. 2026-08-16 02:11 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  52. 2026-08-15 01:27 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  53. 2026-08-13 21:57 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  54. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  55. 2026-08-11 13:38 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  56. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  57. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  58. 2026-08-07 16:24 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  59. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  60. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  61. 2026-08-04 15:07 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  62. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  63. 2026-08-03 13:27 UTCOSV refresh
  64. 2026-08-03 10:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  65. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  66. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  67. 2026-07-30 16:25 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  68. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  69. 2026-07-28 15:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  70. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  71. 2026-07-25 14:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  72. 2026-07-24 14:15 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  73. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.4% · 28th percentile

Frequently asked(5)

What is CVE-2022-2503?
CVE-2022-2503 is a medium-severity vulnerability; its CVE record was published on August 12, 2022. Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear…
When was the CVE record for CVE-2022-2503 published?
The CVE record for CVE-2022-2503 was published on August 12, 2022. 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 October 14, 2026; the record at its source may have been updated since.
Is CVE-2022-2503 actively exploited?
CVE-2022-2503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-2503?
CVE-2022-2503 has a CVSS v3 base score of 6.7 (NVD).
How do I remediate CVE-2022-2503?
A fix for CVE-2022-2503 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-2503 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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