CVE-2022-49390

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-02-27. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

macsec: fix UAF bug for real_dev

Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following:

================================================================== BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161

Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748

Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327

After commit faab39f63c1f ("net: allow out-of-order netdev unregistration") and commit e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev"), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

February 26, 2025

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

macsec: fix UAF bug for real_dev - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/196a888ca6571deb344468e1d7138e3273206335
generic

macsec: fix UAF bug for real_dev - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d130282179aa6051449ac8f8df1115769998a665
generic

macsec: fix UAF bug for real_dev - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78933cbc143b82d02330e00900d2fd08f2682f4e

Vendor Advisories for CVE-2022-49390(1)

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

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-5.4 (5.4.0.1156.98) @ focal2026-08-05ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1062 (5.15.0-1062.66) @ jammy2026-08-05ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1098.88) @ jammy2026-08-05ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1097.101) @ jammy2026-08-05ubuntu
ubuntulinux-tools-oracle (4.15.0.1149.160~16.04.1) @ xenial2026-08-05ubuntu
ubuntulinux-tools-azure-fips-4.15 (4.15.0.2104.100) @ bionic2026-08-05ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1102.111~20.04.1) @ focal2026-08-05ubuntu
ubuntulinux-tools-azure-lts-20.04 (5.4.0.1156.150) @ focal2026-08-05ubuntu
ubuntulinux-tools-azure-fips-5.4 (5.4.0.1157.94) @ focal2026-08-05ubuntu
ubuntulinux-tools-oracle-edge (5.4.0.1151.161~18.04.1) @ bionic2026-08-05ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1092.90) @ jammy2026-08-05ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1136.167) @ focal2026-08-05ubuntu
ubuntulinux-tools-iot-5.4 (5.4.0.1057.55) @ focal2026-08-05ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1090.86) @ jammy2026-08-05ubuntu
ubuntulinux-tools-aws-hwe (4.15.0.1187.200~16.04.1) @ xenial2026-08-05ubuntu
ubuntulinux-tools-fips (4.15.0.1142.139) @ bionic2026-08-05ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.245.257~16.04.1) @ xenial2026-08-05ubuntu
ubuntulinux-tools-gcp-fips-4.15 (4.15.0.2088.86) @ bionic2026-08-05ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1071 (5.4.0-1071.75) @ focal2026-08-05ubuntu
ubuntuoracle (6.8.0-1005) @ noble2026-08-05ubuntu
linuxKernel @ 5.17.15—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.

Weakness Classification(1)

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

All Vendor Advisories

(20)

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 13× in last 7d / 51× 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.

Showing the most recent 100 of 120 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-05 09:32 UTCEG score recompute
  5. 2026-08-05 09:32 UTCVendor advisory
  6. 2026-08-05 09:31 UTCGHSA enrichment
  7. 2026-08-04 15:07 UTCEPSS rescore
  8. 2026-08-04 10:35 UTCEPSS rescore
  9. 2026-08-04 09:46 UTCEG score recompute
  10. 2026-08-04 09:46 UTCVendor advisory
  11. 2026-08-04 09:46 UTCGHSA enrichment
  12. 2026-08-03 10:33 UTCEPSS rescore
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  21. 2026-07-25 14:16 UTCEPSS rescore
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  23. 2026-07-24 14:11 UTCOSV refresh
  24. 2026-07-23 14:16 UTCEPSS rescore
  25. 2026-07-23 14:16 UTCEPSS rescore
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  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. 2026-07-21 15:23 UTCEPSS rescore
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  7. 2026-07-20 17:05 UTCEPSS rescore
  8. 2026-07-19 14:29 UTCEPSS rescore
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  10. 2026-07-19 02:27 UTCEPSS rescore
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  23. 2026-07-12 05:44 UTCEPSS rescore
  24. 2026-07-11 08:25 UTCEPSS rescore
  25. 2026-07-11 08:25 UTCEPSS rescore
  26. 2026-07-09 19:08 UTCEPSS rescore
  27. 2026-07-08 15:13 UTCEPSS rescore
  28. 2026-07-07 13:44 UTCEPSS rescore
  29. 2026-07-07 09:51 UTCOSV refresh
  30. 2026-07-06 16:25 UTCEPSS rescore
  31. 2026-07-06 02:21 UTCEPSS rescore
  32. 2026-07-05 02:28 UTCEPSS rescore
  33. 2026-07-04 06:29 UTCEPSS rescore
  34. 2026-07-01 15:04 UTCEPSS rescore
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  43. 2026-06-25 13:48 UTCEPSS rescore
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  45. 2026-06-24 14:03 UTCEPSS rescore
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  47. 2026-06-23 21:31 UTCEPSS rescore
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  49. 2026-06-22 14:24 UTCEPSS rescore
  50. 2026-06-21 14:55 UTCEPSS rescore
  51. 2026-06-21 14:55 UTCEPSS rescore
  52. 2026-06-21 01:58 UTCEPSS rescore
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  54. 2026-06-19 19:24 UTCEPSS rescore
  55. 2026-06-19 19:24 UTCEPSS rescore
  56. 2026-06-18 20:43 UTCOSV refresh
  57. 2026-06-18 17:51 UTCEPSS rescore
  58. 2026-06-18 17:51 UTCEPSS rescore
  59. 2026-06-17 17:51 UTCEPSS rescore
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  72. 2026-06-08 14:15 UTCEPSS rescore
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  74. 2026-06-07 15:23 UTCEPSS rescore
  75. 2026-06-07 15:23 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-49390?
CVE-2022-49390 is a high vulnerability published on February 26, 2025. In the Linux kernel, the following vulnerability has been resolved: macsec: fix UAF bug for real_dev Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following:…
When was CVE-2022-49390 disclosed?
CVE-2022-49390 was first published in the National Vulnerability Database on February 26, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-49390 actively exploited?
CVE-2022-49390 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.4% of all scored CVEs.
What is the CVSS score of CVE-2022-49390?
CVE-2022-49390 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49390?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49390, 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.

Dependency Blast Radius

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