CVE-2019-19241

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 1.1% (65th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 5 sources updated this weekWeaponized
7.8EG
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).
  • Public exploit code is available (Exploit-DB, marked verified by Exploit-DB)
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 7.8Exploit: Exploit-DB (verified)Exposed services: Not assessed

A fix is available — apply it.

In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
61
EG Risk 61/100

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.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
1.1%
EPSS %ILE
65th
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.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
1.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-21). 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 (exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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

December 17, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Oct 11, 2026
Patch available.
Web page

net: disallow ancillary data for __sys_{send,recv}msg_file() - kernel/git/torvalds/linux.git - Linux kernel source tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d69e07793f891524c6bbf1e75b9ae69db4450953
Web page

io_uring: async workers should inherit the user creds - kernel/git/torvalds/linux.git - Linux kernel source tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181e448d8709e517c9c7b523fcd209f24eb38ca7

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-image-virtual (5.3.0.40.34) @ eoan2026-10-21ubuntu

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
linux—
  • every version up to 5.3.15-1: fixed in 5.3.15-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.3.15-1: fixed in 5.3.15-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.3.15-1: fixed in 5.3.15-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.3.15-1: fixed in 5.3.15-1
—

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 12× in last 7d / 36× 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 95 of 180 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. 5 repeat rows among the latest 100 are merged into the row they repeat. The 85 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-22 16:28 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  2. 2026-10-21 17:57 UTCEG score recompute
  3. 2026-10-21 17:57 UTCVendor advisory
  4. 2026-10-21 17:57 UTCGHSA enrichmentGHSA-wxfp-qr5h-g4wx
  5. 2026-10-21 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  6. 2026-10-20 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-20 15:55 UTCOSV refresh
  8. 2026-10-19 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-10-18 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-18 09:49 UTCEG score recompute
  11. 2026-10-17 16:28 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  12. 2026-10-16 16:31 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-10-15 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-10-14 16:28 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  15. 2026-10-13 16:27 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  16. 2026-10-12 19:58 UTCEG score recompute
  17. 2026-10-12 16:28 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  18. 2026-10-12 00:21 UTCEG score recompute
  19. 2026-10-11 13:42 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  20. 2026-10-10 19:55 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  21. 2026-10-09 20:03 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  22. 2026-10-08 16:37 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  23. 2026-10-07 23:43 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  24. 2026-10-06 15:12 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  25. 2026-10-05 17:39 UTCEPSS rescoreEPSS 1.1% · 64th percentile
Show 70 more
  1. 2026-10-04 23:18 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  2. 2026-10-03 14:22 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  3. 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  4. 2026-09-30 10:15 UTCEG score recompute
  5. 2026-09-28 13:46 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  6. 2026-09-27 14:06 UTCOSV refresh
  7. 2026-09-27 13:40 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  8. 2026-09-26 15:54 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  9. 2026-09-26 00:20 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  10. 2026-09-24 13:59 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  11. 2026-09-23 13:43 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  12. 2026-09-22 14:43 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  13. 2026-09-21 20:28 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  14. 2026-09-20 20:10 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  15. 2026-09-18 19:22 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  16. 2026-09-17 19:22 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  17. 2026-09-16 14:04 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  18. 2026-09-15 03:05 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  19. 2026-09-13 16:42 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  20. 2026-09-12 14:56 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  21. 2026-09-11 14:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  22. 2026-09-11 09:32 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  23. 2026-09-07 22:51 UTCOSV refresh
  24. 2026-09-07 15:57 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  25. 2026-09-06 13:44 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  26. 2026-09-05 15:24 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  27. 2026-09-04 13:56 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  28. 2026-09-02 14:07 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  29. 2026-09-01 03:32 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  30. 2026-08-30 19:13 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  31. 2026-08-30 01:18 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  32. 2026-08-28 21:36 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  33. 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  34. 2026-08-26 14:42 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  35. 2026-08-25 13:45 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  36. 2026-08-24 14:11 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  37. 2026-08-21 23:45 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  38. 2026-08-21 08:14 UTCOSV refresh
  39. 2026-08-20 22:51 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  40. 2026-08-19 17:00 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  41. 2026-08-18 13:44 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  42. 2026-08-17 13:43 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  43. 2026-08-16 14:52 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  44. 2026-08-16 02:10 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  45. 2026-08-15 01:26 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  46. 2026-08-12 13:47 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  47. 2026-08-09 13:43 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  48. 2026-08-08 16:33 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  49. 2026-08-07 16:23 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  50. 2026-08-06 13:43 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  51. 2026-08-05 21:54 UTCOSV refresh
  52. 2026-08-05 19:13 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  53. 2026-08-04 15:05 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  54. 2026-08-02 02:23 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  55. 2026-08-01 04:12 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  56. 2026-07-30 16:24 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  57. 2026-07-30 01:27 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  58. 2026-07-28 15:32 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  59. 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  60. 2026-07-25 14:14 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  61. 2026-07-24 14:14 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  62. 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  63. 2026-07-23 01:43 UTCEG score recompute
  64. 2026-07-22 22:23 UTCEG score recompute
  65. 2026-07-22 14:05 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  66. 2026-07-21 15:22 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  67. 2026-07-20 17:04 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  68. 2026-07-19 23:48 UTCOSV refresh
  69. 2026-07-19 14:28 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  70. 2026-07-19 02:26 UTCEPSS rescoreEPSS 1.1% · 61st percentile

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Exploit-DB entry). Defenders should treat patch urgency accordingly.

  • Exploit-DBEDB-47779✓ verified
    Published Dec 16, 2019

    Linux 5.3 - Privilege Escalation via io_uring Offload of sendmsg() onto Kernel Thread with Kernel Creds

    Open source ↗

Frequently asked(5)

What is CVE-2019-19241?
CVE-2019-19241 is a high-severity vulnerability; its CVE record was published on December 17, 2019. In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to…
When was the CVE record for CVE-2019-19241 published?
The CVE record for CVE-2019-19241 was published on December 17, 2019. 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 21, 2024; the record at its source may have been updated since.
Is CVE-2019-19241 actively exploited?
CVE-2019-19241 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: Exploit-DB marks a public exploit for it as verified. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (65th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2019-19241?
CVE-2019-19241 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2019-19241?
A fix for CVE-2019-19241 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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