CVE-2026-43157

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

octeontx2-af: CGX: fix bitmap leaks

The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak:

unreferenced object (size 16): backtrace: rvu_alloc_bitmap cgx_probe

Free both bitmaps during teardown.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 13, 2026

Advisory Details (6)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965
generic

octeontx2-af: CGX: fix bitmap leaks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-134.134.1~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-23ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-23ubuntu
linuxKernel @ 6.1.165—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.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (116 versions)6.19.6-1—

Weakness Classification(1)

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

All Vendor Advisories

(12)

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 5× in last 7d / 26× 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 187 total refreshes for this CVE.

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

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

Frequently asked(5)

What is CVE-2026-43157?
CVE-2026-43157 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: fix bitmap leaks The RX/TX flow-control bitmaps (rxfcpfvfbmap and txfcpfvfbmap) are allocated by cgxlmacinit() but never freed in cgxlmacexit(). Unbinding and rebinding the driver therefore triggers kmemleak:…
When was CVE-2026-43157 disclosed?
CVE-2026-43157 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43157 actively exploited?
CVE-2026-43157 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-43157?
CVE-2026-43157 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43157?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43157, 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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