CVE-2026-52954

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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
38(Track)
EG Risk 38/100SSVC: 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
41%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 14, 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(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-07-28ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-28ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-07-28ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-28ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.186.196~20.04.1) @ focal2026-07-28ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-28ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-07-28ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-28ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-07-28ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-07-28ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-28ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-07-28ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-07-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-28ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-07-28ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-28ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-28ubuntu

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

(21)

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 17× in last 7d / 89× 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.

  1. 2026-07-28 05:50 UTCVendor advisory
  2. 2026-07-28 05:50 UTCGHSA enrichment
  3. 2026-07-27 17:41 UTCEG score recompute
  4. 2026-07-27 17:41 UTCVendor advisory
  5. 2026-07-27 17:40 UTCGHSA enrichment
  6. 2026-07-27 02:36 UTCVendor advisory
  7. 2026-07-27 02:36 UTCGHSA enrichment
  8. 2026-07-26 15:42 UTCEG score recompute
  9. 2026-07-26 15:42 UTCVendor advisory
  10. 2026-07-26 15:42 UTCGHSA enrichment
  11. 2026-07-26 14:54 UTCEPSS rescore
  12. 2026-07-25 14:18 UTCEPSS rescore
  13. 2026-07-24 14:18 UTCEPSS rescore
  14. 2026-07-23 14:18 UTCEPSS rescore
  15. 2026-07-23 03:19 UTCEG score recompute
  16. 2026-07-22 14:08 UTCEPSS rescore
  17. 2026-07-21 15:25 UTCEPSS rescore
  18. 2026-07-20 17:08 UTCEPSS rescore
  19. 2026-07-19 14:31 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 02:29 UTCEPSS rescore
  22. 2026-07-18 10:04 UTCEPSS rescore
  23. 2026-07-17 02:42 UTCGHSA enrichment
  24. 2026-07-16 17:03 UTCEPSS rescore
  25. 2026-07-16 15:05 UTCGHSA enrichment
Show 72 more
  1. 2026-07-16 04:09 UTCGHSA enrichment
  2. 2026-07-15 17:15 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 06:22 UTCGHSA enrichment
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-15 02:00 UTCEPSS rescore
  8. 2026-07-14 19:29 UTCGHSA enrichment
  9. 2026-07-14 08:20 UTCGHSA enrichment
  10. 2026-07-13 22:31 UTCEPSS rescore
  11. 2026-07-13 21:08 UTCGHSA enrichment
  12. 2026-07-13 10:15 UTCGHSA enrichment
  13. 2026-07-13 06:13 UTCEPSS rescore
  14. 2026-07-13 06:13 UTCEPSS rescore
  15. 2026-07-12 23:05 UTCGHSA enrichment
  16. 2026-07-12 12:11 UTCGHSA enrichment
  17. 2026-07-12 05:46 UTCEPSS rescore
  18. 2026-07-12 01:17 UTCGHSA enrichment
  19. 2026-07-11 14:24 UTCGHSA enrichment
  20. 2026-07-11 08:27 UTCEPSS rescore
  21. 2026-07-11 08:27 UTCEPSS rescore
  22. 2026-07-11 03:26 UTCGHSA enrichment
  23. 2026-07-10 16:32 UTCGHSA enrichment
  24. 2026-07-10 05:37 UTCGHSA enrichment
  25. 2026-07-09 19:10 UTCEPSS rescore
  26. 2026-07-09 19:10 UTCEPSS rescore
  27. 2026-07-09 18:42 UTCGHSA enrichment
  28. 2026-07-09 07:48 UTCGHSA enrichment
  29. 2026-07-08 20:54 UTCGHSA enrichment
  30. 2026-07-08 15:16 UTCEPSS rescore
  31. 2026-07-08 15:16 UTCEPSS rescore
  32. 2026-07-08 10:01 UTCGHSA enrichment
  33. 2026-07-07 23:07 UTCGHSA enrichment
  34. 2026-07-07 13:46 UTCEPSS rescore
  35. 2026-07-07 13:46 UTCEPSS rescore
  36. 2026-07-07 12:13 UTCGHSA enrichment
  37. 2026-07-07 01:19 UTCGHSA enrichment
  38. 2026-07-06 16:27 UTCEPSS rescore
  39. 2026-07-06 16:27 UTCEPSS rescore
  40. 2026-07-06 14:26 UTCGHSA enrichment
  41. 2026-07-06 03:31 UTCGHSA enrichment
  42. 2026-07-06 02:23 UTCEPSS rescore
  43. 2026-07-06 02:23 UTCEPSS rescore
  44. 2026-07-05 16:32 UTCGHSA enrichment
  45. 2026-07-05 05:36 UTCGHSA enrichment
  46. 2026-07-05 02:30 UTCEPSS rescore
  47. 2026-07-04 18:40 UTCGHSA enrichment
  48. 2026-07-04 07:47 UTCGHSA enrichment
  49. 2026-07-04 06:31 UTCEPSS rescore
  50. 2026-07-03 20:52 UTCGHSA enrichment
  51. 2026-07-03 09:59 UTCGHSA enrichment
  52. 2026-07-02 23:03 UTCGHSA enrichment
  53. 2026-07-02 12:09 UTCGHSA enrichment
  54. 2026-07-02 01:14 UTCGHSA enrichment
  55. 2026-07-01 15:07 UTCEPSS rescore
  56. 2026-07-01 14:21 UTCGHSA enrichment
  57. 2026-07-01 03:28 UTCGHSA enrichment
  58. 2026-06-30 23:22 UTCEPSS rescore
  59. 2026-06-30 16:35 UTCGHSA enrichment
  60. 2026-06-30 05:41 UTCEG score recompute▲ 7.50
  61. 2026-06-30 05:40 UTCGHSA enrichment
  62. 2026-06-29 14:06 UTCEPSS rescore
  63. 2026-06-29 14:06 UTCEPSS rescore
  64. 2026-06-28 14:07 UTCEPSS rescore
  65. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  66. 2026-06-28 04:56 UTCEPSS rescore
  67. 2026-06-28 04:56 UTCEPSS rescore
  68. 2026-06-27 12:05 UTCGHSA enrichment
  69. 2026-06-27 03:08 UTCEPSS rescore
  70. 2026-06-25 13:49 UTCEPSS rescore
  71. 2026-06-24 18:30 UTCEG score recompute
  72. 2026-06-24 18:02 UTCNVD updatefirst tracked

Related CVEs(same vendor + same CWE)

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 July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52954 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 58.7% of all scored CVEs.
What is the CVSS score of CVE-2026-52954?
CVE-2026-52954 has a CVSS v3 base score of 7.5 (NVD).
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.

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