CVE-2026-31583

NVD 0.07.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

media: em28xx: fix use-after-free in em28xx_v4l2_open()

em28xx_v4l2_open() reads dev->v4l2 without holding dev->lock, creating a race with em28xx_v4l2_init()'s error path and em28xx_v4l2_fini(), both of which free the em28xx_v4l2 struct and set dev->v4l2 to NULL under dev->lock.

This race leads to two issues:

  • use-after-free in v4l2_fh_init() when accessing vdev->ctrl_handler,
since the video_device is embedded in the freed em28xx_v4l2 struct.
  • NULL pointer dereference in em28xx_resolution_set() when accessing
v4l2->norm, since dev->v4l2 has been set to NULL.

Fix this by moving the mutex_lock() before the dev->v4l2 read and adding a NULL check for dev->v4l2 under the lock.

CVSS v3
—
EG Score
7.8(medium)
EPSS
2.8%
KEV
Not listed

Published

April 24, 2026

Last Modified

June 14, 2026

Advisory Details (9)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dd2b888e08d3b3d6aacd65d76cd44fac11da750f
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b5d141ea15f173f15b9f0a72965902f3428c0d92
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a66485a934c7187ae8e36517d40615fa2e961cff
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/871b8ea8ef39a6c253594649f4339378fad3d0dd
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6b9e66437cc6123ddedac141e1b8b6fcf57d2972
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5fb2940327722b4684d2f964b54c1c90aa277324
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3c0283a59e36e3707c4a81f4952e362d31f876b8
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/38a327221f7f765e7d853b7bafe47e342441ec85
generic

media: em28xx: fix use-after-free in em28xx_v4l2_open() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2cbf81f76842e46bdf25823c70e1db4044a65678

Vendor Advisories for CVE-2026-31583(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 40× 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 173 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-13 06:13 UTCEPSS rescore
  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-08 15:15 UTCEPSS rescore
  11. 2026-07-07 13:46 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-06-25 13:49 UTCEPSS rescore
  2. 2026-06-24 14:05 UTCEPSS rescore
  3. 2026-06-23 21:33 UTCEPSS rescore
  4. 2026-06-23 21:33 UTCEPSS rescore
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-22 14:25 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 14:56 UTCEPSS rescore
  9. 2026-06-21 01:59 UTCEPSS rescore
  10. 2026-06-19 19:25 UTCEPSS rescore
  11. 2026-06-19 19:25 UTCEPSS rescore
  12. 2026-06-18 17:52 UTCEPSS rescore
  13. 2026-06-18 17:52 UTCEPSS rescore
  14. 2026-06-17 17:53 UTCEPSS rescore
  15. 2026-06-16 17:52 UTCEPSS rescore
  16. 2026-06-15 17:49 UTCEPSS rescore
  17. 2026-06-14 23:28 UTCMITRE cvelistV5
  18. 2026-06-14 23:18 UTCEPSS rescore
  19. 2026-06-14 22:56 UTCEG score recompute
  20. 2026-06-14 22:56 UTCVendor advisory
  21. 2026-06-14 22:56 UTCGHSA enrichment
  22. 2026-06-14 11:57 UTCEG score recompute
  23. 2026-06-14 11:57 UTCVendor advisory
  24. 2026-06-14 11:56 UTCGHSA enrichment
  25. 2026-06-13 23:00 UTCEPSS rescore
  26. 2026-06-12 23:12 UTCEPSS rescore
  27. 2026-06-12 23:12 UTCEPSS rescore
  28. 2026-06-12 12:21 UTCEG score recompute
  29. 2026-06-12 12:21 UTCVendor advisory
  30. 2026-06-12 12:21 UTCGHSA enrichment
  31. 2026-06-12 00:57 UTCEG score recompute
  32. 2026-06-12 00:57 UTCVendor advisory
  33. 2026-06-12 00:57 UTCGHSA enrichment
  34. 2026-06-11 14:04 UTCEG score recompute
  35. 2026-06-11 14:04 UTCVendor advisory
  36. 2026-06-11 14:04 UTCGHSA enrichment
  37. 2026-06-11 14:00 UTCEPSS rescore
  38. 2026-06-10 22:18 UTCEPSS rescore
  39. 2026-06-10 21:39 UTCEG score recompute
  40. 2026-06-10 21:39 UTCVendor advisory
  41. 2026-06-10 21:39 UTCGHSA enrichment
  42. 2026-06-10 13:22 UTCEPSS rescore
  43. 2026-06-10 10:46 UTCEG score recompute
  44. 2026-06-10 10:46 UTCVendor advisory
  45. 2026-06-10 10:46 UTCGHSA enrichment
  46. 2026-06-09 23:53 UTCEG score recompute
  47. 2026-06-09 23:53 UTCVendor advisory
  48. 2026-06-09 23:53 UTCGHSA enrichment
  49. 2026-06-09 12:23 UTCEG score recompute
  50. 2026-06-09 12:23 UTCVendor advisory
  51. 2026-06-09 12:23 UTCGHSA enrichment
  52. 2026-06-09 00:54 UTCEG score recompute
  53. 2026-06-09 00:54 UTCVendor advisory
  54. 2026-06-09 00:54 UTCGHSA enrichment
  55. 2026-06-08 14:17 UTCEPSS rescore
  56. 2026-06-08 14:17 UTCEPSS rescore
  57. 2026-06-08 13:09 UTCEG score recompute
  58. 2026-06-08 13:09 UTCVendor advisory
  59. 2026-06-08 13:09 UTCGHSA enrichment
  60. 2026-06-08 02:15 UTCEG score recompute
  61. 2026-06-08 02:15 UTCVendor advisory
  62. 2026-06-08 02:15 UTCGHSA enrichment
  63. 2026-06-07 15:25 UTCEPSS rescore
  64. 2026-06-07 15:25 UTCEPSS rescore
  65. 2026-06-07 15:25 UTCEPSS rescore
  66. 2026-06-07 15:22 UTCEG score recompute
  67. 2026-06-07 15:22 UTCVendor advisory
  68. 2026-06-07 15:22 UTCGHSA enrichment
  69. 2026-06-07 04:29 UTCEG score recompute
  70. 2026-06-07 04:29 UTCVendor advisory
  71. 2026-06-07 04:29 UTCGHSA enrichment
  72. 2026-06-06 17:24 UTCEG score recompute
  73. 2026-06-06 17:24 UTCVendor advisory
  74. 2026-06-06 17:24 UTCGHSA enrichment
  75. 2026-06-06 13:47 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2026-31583?
CVE-2026-31583 is a publicly disclosed vulnerability published on April 24, 2026. In the Linux kernel, the following vulnerability has been resolved: media: em28xx: fix use-after-free in em28xxv4l2open() em28xxv4l2open() reads dev->v4l2 without holding dev->lock, creating a race with em28xxv4l2init()'s error path and em28xxv4l2fini(), both of which free the em28xx_v4l2 struct…
When was CVE-2026-31583 disclosed?
CVE-2026-31583 was first published in the National Vulnerability Database on April 24, 2026, with the most recent update on June 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31583 actively exploited?
CVE-2026-31583 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-31583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31583, 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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