CVE-2026-46151

NVD 0.05.5▲
EchelonGraph scoreLOW confidence

Score 5.5 from GitHub Security Advisory published 2026-05-28.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa
Trending — 4 sources updated this week
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:

usb: usblp: fix heap leak in IEEE 1284 device ID via short response

usblp_ctrl_msg() collapses the usb_control_msg() return value to 0/-errno, discarding the actual number of bytes transferred. A broken printer can complete the GET_DEVICE_ID control transfer short and the driver has no way to know.

usblp_cache_device_id_string() reads the 2-byte big-endian length prefix from the response and trusts it (clamped only to the buffer bounds). The buffer is kmalloc(1024) at probe time. A device that sends exactly two bytes (e.g. 0x03 0xFF, claiming a 1023-byte ID) leaves device_id_string[2..1022] holding stale kmalloc heap.

That stale data is then exposed:

  • via the ieee1284_id sysfs attribute (sprintf("%s", buf+2), truncated
at the first NUL in the stale heap), and
  • via the IOCNR_GET_DEVICE_ID ioctl, which copy_to_user()s the full
claimed length regardless of NULs, up to 1021 bytes of uninitialized heap, with the leak size chosen by the device.

Fix this up by just zapping the buffer with zeros before each request sent to the device.

CVSS v3
—
EG Score
5.5(low)
EPSS
2.4%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 14, 2026

Advisory Details (8)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8247f52d822180e94ccbfdab91613af386a4e34d
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7a400c6fe3617e31e690e3f7ca37bb335e0498f3
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e29c32a27218f2dcd4a4e9b0b3c5e7728640698
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d8142141c942c0d8e79343cffda9c44bb1f3f4f
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/612640abbd9e0947fe8f37aaf0cf324265d7caa4
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/522d17e93a85575256894212d10e5a1fa6f36529
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4650cce898fcd0bb8c33e529984687a8caed10c3
generic

usb: usblp: fix heap leak in IEEE 1284 device ID via short response - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4220d4dd062ea3d3eb056a6cbe0b568e740d20b1

Vendor Advisories for CVE-2026-46151(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 13× in last 7d / 72× 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 125 total refreshes for this CVE.

  1. 2026-07-16 10:24 UTCEG score recompute
  2. 2026-07-16 10:24 UTCVendor advisory
  3. 2026-07-16 10:24 UTCGHSA enrichment
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-13 22:30 UTCEPSS rescore
  7. 2026-07-13 06:13 UTCEPSS rescore
  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-11 21:16 UTCEG score recompute
  10. 2026-07-11 21:16 UTCVendor advisory
  11. 2026-07-11 21:16 UTCGHSA enrichment
  12. 2026-07-11 08:27 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-08 18:32 UTCEG score recompute
  15. 2026-07-08 18:32 UTCVendor advisory
  16. 2026-07-08 18:32 UTCGHSA enrichment
  17. 2026-07-08 15:16 UTCEPSS rescore
  18. 2026-07-07 13:46 UTCEPSS rescore
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-02 14:16 UTCEG score recompute
  24. 2026-07-02 14:16 UTCVendor advisory
  25. 2026-07-02 14:16 UTCGHSA enrichment
Show 75 more
  1. 2026-07-01 15:07 UTCEPSS rescore
  2. 2026-07-01 03:10 UTCEG score recompute
  3. 2026-07-01 03:10 UTCVendor advisory
  4. 2026-07-01 03:10 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-29 20:39 UTCEG score recompute
  7. 2026-06-29 20:39 UTCVendor advisory
  8. 2026-06-29 20:39 UTCGHSA enrichment
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-29 14:06 UTCEPSS rescore
  11. 2026-06-28 21:11 UTCEG score recompute
  12. 2026-06-28 21:11 UTCVendor advisory
  13. 2026-06-28 21:11 UTCGHSA enrichment
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-27 21:43 UTCEG score recompute
  18. 2026-06-27 21:43 UTCVendor advisory
  19. 2026-06-27 21:43 UTCGHSA enrichment
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 22:15 UTCEG score recompute
  22. 2026-06-26 22:15 UTCVendor advisory
  23. 2026-06-26 22:15 UTCGHSA enrichment
  24. 2026-06-25 22:47 UTCEG score recompute
  25. 2026-06-25 22:47 UTCVendor advisory
  26. 2026-06-25 22:47 UTCGHSA enrichment
  27. 2026-06-25 13:49 UTCEPSS rescore
  28. 2026-06-24 22:49 UTCEG score recompute
  29. 2026-06-24 22:49 UTCVendor advisory
  30. 2026-06-24 22:49 UTCGHSA enrichment
  31. 2026-06-24 14:05 UTCEPSS rescore
  32. 2026-06-23 21:33 UTCEPSS rescore
  33. 2026-06-23 21:33 UTCEPSS rescore
  34. 2026-06-22 14:25 UTCEPSS rescore
  35. 2026-06-22 14:25 UTCEPSS rescore
  36. 2026-06-21 14:56 UTCEPSS rescore
  37. 2026-06-21 14:56 UTCEPSS rescore
  38. 2026-06-21 01:59 UTCEPSS rescore
  39. 2026-06-21 01:59 UTCEPSS rescore
  40. 2026-06-19 19:26 UTCEPSS rescore
  41. 2026-06-19 19:26 UTCEPSS rescore
  42. 2026-06-18 17:52 UTCEPSS rescore
  43. 2026-06-18 17:52 UTCEPSS rescore
  44. 2026-06-17 17:53 UTCEPSS rescore
  45. 2026-06-17 15:13 UTCEG score recompute
  46. 2026-06-17 15:13 UTCGHSA enrichment
  47. 2026-06-16 17:52 UTCEPSS rescore
  48. 2026-06-16 15:44 UTCEG score recompute
  49. 2026-06-16 15:44 UTCVendor advisory
  50. 2026-06-16 15:44 UTCGHSA enrichment
  51. 2026-06-15 17:49 UTCEPSS rescore
  52. 2026-06-15 13:02 UTCEG score recompute
  53. 2026-06-15 13:02 UTCVendor advisory
  54. 2026-06-15 13:02 UTCGHSA enrichment
  55. 2026-06-14 23:28 UTCMITRE cvelistV5
  56. 2026-06-14 10:00 UTCEG score recompute
  57. 2026-06-14 10:00 UTCVendor advisory
  58. 2026-06-14 10:00 UTCGHSA enrichment
  59. 2026-06-13 23:00 UTCEPSS rescore
  60. 2026-06-13 10:31 UTCEG score recompute
  61. 2026-06-13 10:31 UTCVendor advisory
  62. 2026-06-13 10:31 UTCGHSA enrichment
  63. 2026-06-12 23:12 UTCEPSS rescore
  64. 2026-06-12 23:12 UTCEPSS rescore
  65. 2026-06-12 10:49 UTCEG score recompute▲ 5.50
  66. 2026-06-12 10:49 UTCVendor advisory
  67. 2026-06-12 10:49 UTCGHSA enrichment
  68. 2026-06-11 14:00 UTCEPSS rescore
  69. 2026-06-10 22:18 UTCEPSS rescore
  70. 2026-06-10 13:22 UTCEPSS rescore
  71. 2026-06-10 13:22 UTCEPSS rescore
  72. 2026-06-09 21:17 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  73. 2026-06-09 14:25 UTCGHSA enrichment
  74. 2026-06-08 14:17 UTCEPSS rescore
  75. 2026-06-08 14:17 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2026-46151?
CVE-2026-46151 is a publicly disclosed vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: usb: usblp: fix heap leak in IEEE 1284 device ID via short response usblpctrlmsg() collapses the usbcontrolmsg() return value to 0/-errno, discarding the actual number of bytes transferred. A broken printer can complete the…
When was CVE-2026-46151 disclosed?
CVE-2026-46151 was first published in the National Vulnerability Database on May 28, 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-2026-46151 actively exploited?
CVE-2026-46151 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-46151?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46151, 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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