CVE-2026-52954

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

libceph: handle rbtree insertion error in decode_choose_args()

A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). In this function, num_choose_arg_maps is read from the message, and a corresponding number of crush_choose_arg_maps gets decoded afterwards. Each crush_choose_arg_map has a choose_args_index, which serves as the key when inserting it into the choose_args rbtree of the decoded crush_map. If a (potentially corrupted) message contains two crush_choose_arg_maps with the same index, the assertion in insert_choose_arg_map() triggers a kernel BUG when trying to insert the second crush_choose_arg_map.

This patch fixes the issue by switching to the non-asserting rbtree insertion function and rejecting the message if the insertion fails.

[ idryomov: changelog ]

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

June 24, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da
generic

libceph: handle rbtree insertion error in decode_choose_args() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3

Vendor Advisories for CVE-2026-52954(2)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1107.113~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (137 versions)7.0.10-1—

Weakness Classification(1)

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

All Vendor Advisories

(25)

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 31× in last 7d / 164× 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 259 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-52954?
CVE-2026-52954 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decodechooseargs() A message of type CEPHMSGOSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain chooseargs that get decoded in…
When was CVE-2026-52954 disclosed?
CVE-2026-52954 was first published in the National Vulnerability Database on June 24, 2026, 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-2026-52954 actively exploited?
CVE-2026-52954 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.9% of all scored CVEs.
What is the CVSS score of CVE-2026-52954?
CVE-2026-52954 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-52954?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52954, 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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