CVE-2026-45852

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

RDMA/rxe: Fix double free in rxe_srq_from_init

In rxe_srq_from_init(), the queue pointer 'q' is assigned to 'srq->rq.queue' before copying the SRQ number to user space. If copy_to_user() fails, the function calls rxe_queue_cleanup() to free the queue, but leaves the now-invalid pointer in 'srq->rq.queue'.

The caller of rxe_srq_from_init() (rxe_create_srq) eventually calls rxe_srq_cleanup() upon receiving the error, which triggers a second rxe_queue_cleanup() on the same memory, leading to a double free.

The call trace looks like this: kmem_cache_free+0x.../0x... rxe_queue_cleanup+0x1a/0x30 [rdma_rxe] rxe_srq_cleanup+0x42/0x60 [rdma_rxe] rxe_elem_release+0x31/0x70 [rdma_rxe] rxe_create_srq+0x12b/0x1a0 [rdma_rxe] ib_create_srq_user+0x9a/0x150 [ib_core]

Fix this by moving 'srq->rq.queue = q' after copy_to_user.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
7.1%
KEV
Not listed

Published

May 27, 2026

Last Modified

July 15, 2026

Advisory Details (8)

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

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d286f0d4e3ad3caf5f0e673cdad7bf89bf37d947
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce6f8e007682f378279d4cf83b240f12d52c723b
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af5956243018918130d52c9f671efdb40bab3366
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5c07aef09a121a4cd622a71eb0753a9e135c84a8
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/26a9cfe12f4ffdeaa136f252478986fa5f397ddc
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/26793db60925df1e88a29466813d586cbc190b8c
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/22b8c23a3b92d023614bb00896fe364b2c1a31d3
generic

RDMA/rxe: Fix double free in rxe_srq_from_init - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0beefd0e15d962f497aad750b2d5e9c3570b66d1

Vendor Advisories for CVE-2026-45852(10)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-477.150.1.el8_82026-07-06redhat
redhatkernel-0:3.10.0-1160.154.1.el72026-07-06redhat
redhatkernel-0:4.18.0-305.197.1.el8_42026-07-06redhat
redhatkernel-0:4.18.0-372.198.1.el8_62026-07-01redhat
redhatkernel-0:5.14.0-570.125.1.el9_62026-07-01redhat
redhatkernel-0:5.14.0-427.134.1.el9_42026-06-22redhat
redhatkernel-0:5.14.0-687.15.1.el9_82026-06-11redhat
redhatkernel-rt-0:4.18.0-553.132.1.rt7.473.el8_102026-06-10redhat
redhatkernel-0:4.18.0-553.132.1.el8_102026-06-10redhat

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.

Data Freshness Timeline

(refreshed 7× in last 7d / 82× 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 183 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45852?
CVE-2026-45852 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix double free in rxesrqfrom_init In rxesrqfrom_init(), the queue pointer 'q' is assigned to 'srq->rq.queue' before copying the SRQ number to user space. If copytouser() fails, the function calls rxequeuecleanup() to…
When was CVE-2026-45852 disclosed?
CVE-2026-45852 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45852 actively exploited?
CVE-2026-45852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45852?
CVE-2026-45852 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-45852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45852, 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

Explore the affected products and dependency analysis for CVE-2026-45852

Explore →

Is Your Infrastructure Affected by CVE-2026-45852?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs