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
Trending — 5 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 20, 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(11)

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

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1057.58~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-09-14ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-09-14ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-14ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-14ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-14ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-14ubuntu
redhatkernel-rt-0:3.10.0-1160.155.1.rt56.1307.el72026-07-17redhat
redhatkernel-0:4.18.0-477.150.1.el8_82026-07-06redhat
redhatkernel-0:4.18.0-305.197.1.el8_42026-07-06redhat
redhatkernel-0:3.10.0-1160.154.1.el72026-07-06redhat
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
linuxKernel @ 5.10.259—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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
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 ... 6.18~rc7-1~exp1 (103 versions)6.18.14-1—

Weakness Classification(2)

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

Additional Vendor Advisories

(15)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 37× 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 293 total refreshes for this CVE.

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

Related CVEs(same product + 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 August 20, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 92.7% of all scored CVEs.
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

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