CVE-2022-42919

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 2022-11-07. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
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: 0.8%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

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 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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 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
0.8%
EPSS %ILE
54th
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). 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 or medium mission impact; Track* at high (mission-essential systems).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 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

November 7, 2022

Last Modified

November 3, 2025

Advisory Details (10)

Auto-updated Oct 21, 2026
Patch available.
Web page

[SECURITY] Fedora 36 Update: pypy3.9-7.3.11-1.3.9.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDK3ZZBRYFO47ET3N4BNTKVXN47U6ICY/
Web page

[SECURITY] Fedora 35 Update: python3.10-3.10.8-3.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R6KGIRHSENZ4QAB234Z36HVIDTRJ3MFI/
Web page

[SECURITY] Fedora 37 Update: pypy3.9-7.3.11-1.3.9.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QLUGZSEAO3MBWGKCUSMKQIRYJZKJCIOB/
Web page

[SECURITY] Fedora 35 Update: python3.9-3.9.15-2.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PI5DYIED6U26BGX5IRZWNCP6TY4M2ZGZ/
Web page

[SECURITY] Fedora 36 Update: python3.10-3.10.8-3.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2LHWWEI5OBQ6RELULMVU6KMDYG4WZXH/
Web page

[SECURITY] Fedora 36 Update: python3.9-3.9.15-3.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FKGCQPIVHEAIJ77R3RSNSQWYBUDVWDKU/
Web page

Linux specific local privilege escalation via the multiprocessing forkserver start method - CVE-2022-42919 · Issue #97514 · python/cpython · GitHub

https://github.com/python/cpython/issues/97514#issuecomment-1310277840
Web page

Linux specific local privilege escalation via the multiprocessing forkserver start method - CVE-2022-42919 · Issue #97514 · python/cpython · GitHub

https://github.com/python/cpython/issues/97514
Web page

Comparing v3.9.15...v3.9.16 · python/cpython · GitHub

https://github.com/python/cpython/compare/v3.9.15...v3.9.16
Web page

Comparing v3.10.8...v3.10.9 · python/cpython · GitHub

https://github.com/python/cpython/compare/v3.10.8...v3.10.9

Vendor Advisories for CVE-2022-42919(3)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3.10-full (3.10.7-1ubuntu0.1) @ kinetic2026-10-21ubuntu
ubuntupython3.9 (3.9.5-3ubuntu0~20.04.1+esm1) @ focal2026-10-21ubuntu
ubuntupython3.11-venv (3.11.0~rc1-1~22.04.1~esm1) @ jammy2026-10-21ubuntu
redhatpython39:3.9-8060020221109194140.6a6313992022-11-16redhat
redhatpython3.9-0:3.9.10-4.el9_02022-11-16redhat

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

(8 across 6 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.10+dfsg-1 ... 7.3.9+dfsg-5 (53 versions)
  • every version on: no fix on record
—
python3.93.9.2-1, 3.9.2-1+deb11u1
  • every version up to 3.9.2-1+deb11u2: fixed in 3.9.2-1+deb11u2
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
python3.11—
  • every version up to 3.11.0-2: fixed in 3.11.0-2
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 38× 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 92 of 195 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. 8 repeat rows among the latest 100 are merged into the row they repeat. The 103 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 0.8% · 54th percentile
  2. 2026-10-22 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  3. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  4. 2026-10-21 06:05 UTCEG score recompute
  5. 2026-10-21 06:05 UTCVendor advisory
  6. 2026-10-21 06:05 UTCGHSA enrichmentGHSA-hrxf-3584-q6p6 · GitHub severity HIGH · GitHub CVSS 7.8
  7. 2026-10-20 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  8. 2026-10-19 16:28 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  9. 2026-10-18 16:28 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  10. 2026-10-18 08:25 UTCEG score recompute
  11. 2026-10-17 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-10-16 16:35 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-10-15 16:28 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-10-15 11:24 UTCOSV refresh
  15. 2026-10-14 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-10-13 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-10-12 18:46 UTCEG score recompute
  18. 2026-10-12 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-10-11 22:09 UTCEG score recompute
  20. 2026-10-11 13:44 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  21. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  22. 2026-10-09 20:04 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  23. 2026-10-08 17:05 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  24. 2026-10-07 23:45 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  25. 2026-10-06 15:14 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
Show 67 more
  1. 2026-10-05 17:40 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  2. 2026-10-04 23:19 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  3. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  4. 2026-10-02 16:23 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  5. 2026-10-01 19:47 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  6. 2026-09-30 16:07 UTCEG score recompute
  7. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  8. 2026-09-29 15:16 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  9. 2026-09-28 13:48 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  10. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  11. 2026-09-26 15:55 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  12. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  13. 2026-09-24 06:15 UTCOSV refresh
  14. 2026-09-23 13:45 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  15. 2026-09-20 20:13 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  16. 2026-09-19 15:38 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  17. 2026-09-16 14:05 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  18. 2026-09-16 05:10 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  19. 2026-09-15 03:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  21. 2026-09-12 14:57 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  22. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  23. 2026-09-11 09:33 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  24. 2026-09-08 21:57 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  25. 2026-09-07 15:58 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  26. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  27. 2026-09-05 15:25 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  28. 2026-09-04 23:29 UTCOSV refresh
  29. 2026-09-04 13:57 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  30. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  31. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  32. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  33. 2026-08-30 19:14 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  34. 2026-08-30 01:19 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  35. 2026-08-28 21:38 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  36. 2026-08-27 14:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  37. 2026-08-26 14:43 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  38. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  39. 2026-08-24 14:13 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  40. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  41. 2026-08-21 23:46 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  42. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  43. 2026-08-19 17:01 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  44. 2026-08-18 13:45 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  45. 2026-08-18 10:21 UTCOSV refresh
  46. 2026-08-17 13:44 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  47. 2026-08-16 14:53 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  48. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  49. 2026-08-15 01:27 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  50. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  51. 2026-08-12 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  52. 2026-08-11 13:39 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  53. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  54. 2026-08-08 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  55. 2026-08-07 16:24 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  56. 2026-08-06 13:44 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  57. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  58. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  59. 2026-08-03 10:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  60. 2026-08-03 05:57 UTCOSV refresh
  61. 2026-08-02 02:24 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  62. 2026-08-01 04:13 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  63. 2026-07-30 16:25 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  64. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  65. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  66. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  67. 2026-07-25 14:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile

Frequently asked(5)

What is CVE-2022-42919?
CVE-2022-42919 is a high-severity vulnerability; its CVE record was published on November 7, 2022. Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network…
When was the CVE record for CVE-2022-42919 published?
The CVE record for CVE-2022-42919 was published on November 7, 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 November 3, 2025; the record at its source may have been updated since.
Is CVE-2022-42919 actively exploited?
CVE-2022-42919 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-42919?
CVE-2022-42919 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-42919?
A fix for CVE-2022-42919 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-42919 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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