CVE-2022-49395

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-04-17. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

um: Fix out-of-bounds read in LDT setup

syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes.

================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1

CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0

The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960

This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
18.6%
KEV
Not listed

Published

February 26, 2025

Last Modified

October 1, 2025

References (9)

Vendor Advisories for CVE-2022-49395(11)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-427.81.1.el9_42025-08-06redhat
redhatkernel-0:4.18.0-372.153.1.el8_62025-07-23redhat
redhatkernel-0:5.14.0-284.125.1.el9_22025-07-15redhat
redhatkernel-rt-0:5.14.0-70.138.1.rt21.210.el9_02025-07-14redhat
redhatkernel-0:4.18.0-305.162.1.el8_42025-07-14redhat
redhatkernel-0:5.14.0-70.138.1.el9_02025-07-14redhat
redhatkernel-rt-0:5.14.0-284.125.1.rt14.410.el9_22025-07-07redhat
redhatkernel-0:4.18.0-193.156.1.el8_22025-07-02redhat
redhatkernel-0:4.18.0-477.100.1.el8_82025-07-02redhat
redhatkernel-rt-0:4.18.0-553.56.1.rt7.397.el8_102025-06-10redhat
redhatkernel-0:4.18.0-553.56.1.el8_102025-06-10redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-23 02:16 UTCEG score recompute
  2. 2026-07-22 23:04 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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  5. 2026-07-20 17:05 UTCEPSS rescore
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  1. 2026-07-07 13:44 UTCEPSS rescore
  2. 2026-07-07 09:51 UTCOSV refresh
  3. 2026-07-06 16:25 UTCEPSS rescore
  4. 2026-07-06 02:21 UTCEPSS rescore
  5. 2026-07-05 02:28 UTCEPSS rescore
  6. 2026-07-04 06:29 UTCEPSS rescore
  7. 2026-07-01 15:04 UTCEPSS rescore
  8. 2026-06-30 23:21 UTCEPSS rescore
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  16. 2026-06-25 13:48 UTCEPSS rescore
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  20. 2026-06-23 21:31 UTCEPSS rescore
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  22. 2026-06-22 14:24 UTCEPSS rescore
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  27. 2026-06-19 19:24 UTCEPSS rescore
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  29. 2026-06-18 20:44 UTCOSV refresh
  30. 2026-06-18 17:51 UTCEPSS rescore
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  41. 2026-06-11 13:58 UTCEPSS rescore
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  45. 2026-06-08 14:15 UTCEPSS rescore
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  47. 2026-06-07 15:23 UTCEPSS rescore
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  49. 2026-06-06 13:46 UTCEPSS rescore
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  64. 2026-05-30 10:57 UTCEG score recompute
  65. 2026-05-30 10:57 UTCVendor advisory
  66. 2026-05-30 10:57 UTCGHSA enrichment
  67. 2026-05-30 07:59 UTCOSV refresh
  68. 2026-05-29 13:43 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-49395?
CVE-2022-49395 is a high vulnerability published on February 26, 2025. In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscallstubdata() expects the data_count parameter to be the number of longs, not bytes. ================================================================== BUG: KASAN: stack-out-of-bounds in…
When was CVE-2022-49395 disclosed?
CVE-2022-49395 was first published in the National Vulnerability Database on February 26, 2025, with the most recent update on October 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-49395 actively exploited?
CVE-2022-49395 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-49395?
CVE-2022-49395 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2022-49395?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49395, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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