CVE-2023-53539

MEDIUMCVSS · not yet scored5.5
EchelonGraph scoreLOW confidence

Score 5.5 from GitHub Security Advisory published 2025-10-04.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

A fix is available — apply it.

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

RDMA/rxe: Fix incomplete state save in rxe_requester

If a send packet is dropped by the IP layer in rxe_requester() the call to rxe_xmit_packet() can fail with err == -EAGAIN. To recover, the state of the wqe is restored to the state before the packet was sent so it can be resent. However, the routines that save and restore the state miss a significnt part of the variable state in the wqe, the dma struct which is used to process through the sge table. And, the state is not saved before the packet is built which modifies the dma struct.

Under heavy stress testing with many QPs on a fast node sending large messages to a slow node dropped packets are observed and the resent packets are corrupted because the dma struct was not restored. This patch fixes this behavior and allows the test cases to succeed.

CVSS v3
—
EG Score
5.5(low)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

October 4, 2025

Last Modified

June 16, 2026

References (4)

Vendor Advisories for CVE-2023-53539(13)

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

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:3.10.0-1160.148.1.rt56.1300.el72026-04-27redhat
redhatkernel-0:3.10.0-1160.148.1.el72026-04-22redhat
redhatkernel-0:4.18.0-372.185.1.el8_62026-03-25redhat
redhatkernel-0:4.18.0-305.186.1.el8_42026-02-25redhat
redhatkernel-0:4.18.0-193.185.1.el8_22026-02-12redhat
redhatkernel-rt-0:5.14.0-70.163.1.rt21.235.el9_02026-01-28redhat
redhatkernel-0:4.18.0-477.126.1.el8_82026-01-28redhat
redhatkernel-0:5.14.0-70.163.1.el9_02026-01-28redhat
redhatkernel-rt-0:5.14.0-284.152.1.rt14.437.el9_22026-01-14redhat
redhatkernel-0:5.14.0-284.152.1.el9_22026-01-14redhat
redhatkernel-0:4.18.0-553.89.1.el8_102025-12-08redhat
redhatkernel-rt-0:4.18.0-553.89.1.rt7.430.el8_102025-12-08redhat
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
linuxKernel @ 6.1.53—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.

Data Freshness Timeline

(refreshed 11× in last 7d / 39× 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. 2026-07-26 14:53 UTCEPSS rescore
  2. 2026-07-25 14:16 UTCEPSS rescore
  3. 2026-07-24 14:16 UTCEPSS rescore
  4. 2026-07-23 18:11 UTCOSV refresh
  5. 2026-07-23 14:16 UTCEPSS rescore
  6. 2026-07-23 02:29 UTCEG score recompute
  7. 2026-07-22 23:16 UTCEG score recompute
  8. 2026-07-22 14:07 UTCEPSS rescore
  9. 2026-07-22 14:07 UTCEPSS rescore
  10. 2026-07-21 15:23 UTCEPSS rescore
  11. 2026-07-20 17:06 UTCEPSS rescore
  12. 2026-07-19 14:30 UTCEPSS rescore
  13. 2026-07-19 14:29 UTCEPSS rescore
  14. 2026-07-19 02:27 UTCEPSS rescore
  15. 2026-07-19 02:27 UTCEPSS rescore
  16. 2026-07-18 10:03 UTCEPSS rescore
  17. 2026-07-18 10:03 UTCEPSS rescore
  18. 2026-07-16 17:01 UTCEPSS rescore
  19. 2026-07-15 16:56 UTCEPSS rescore
  20. 2026-07-15 01:59 UTCEPSS rescore
  21. 2026-07-15 01:59 UTCEPSS rescore
  22. 2026-07-12 05:45 UTCEPSS rescore
  23. 2026-07-12 05:45 UTCEPSS rescore
  24. 2026-07-11 08:26 UTCEPSS rescore
  25. 2026-07-09 19:08 UTCEPSS rescore
Show 66 more
  1. 2026-07-08 15:13 UTCEPSS rescore
  2. 2026-07-07 13:45 UTCEPSS rescore
  3. 2026-07-07 13:44 UTCEPSS rescore
  4. 2026-07-06 13:00 UTCOSV refresh
  5. 2026-07-06 02:22 UTCEPSS rescore
  6. 2026-07-06 02:22 UTCEPSS rescore
  7. 2026-07-04 06:29 UTCEPSS rescore
  8. 2026-07-01 15:05 UTCEPSS rescore
  9. 2026-06-30 23:21 UTCEPSS rescore
  10. 2026-06-30 23:21 UTCEPSS rescore
  11. 2026-06-29 14:05 UTCEPSS rescore
  12. 2026-06-28 14:06 UTCEPSS rescore
  13. 2026-06-28 14:06 UTCEPSS rescore
  14. 2026-06-28 04:55 UTCEPSS rescore
  15. 2026-06-27 03:07 UTCEPSS rescore
  16. 2026-06-25 13:48 UTCEPSS rescore
  17. 2026-06-25 13:48 UTCEPSS rescore
  18. 2026-06-24 14:04 UTCEPSS rescore
  19. 2026-06-24 14:04 UTCEPSS rescore
  20. 2026-06-23 21:31 UTCEPSS rescore
  21. 2026-06-23 21:31 UTCEPSS rescore
  22. 2026-06-22 14:24 UTCEPSS rescore
  23. 2026-06-22 14:24 UTCEPSS rescore
  24. 2026-06-21 14:55 UTCEPSS rescore
  25. 2026-06-21 14:55 UTCEPSS rescore
  26. 2026-06-21 02:36 UTCMITRE cvelistV5
  27. 2026-06-21 01:58 UTCEPSS rescore
  28. 2026-06-21 01:58 UTCEPSS rescore
  29. 2026-06-19 19:24 UTCEPSS rescore
  30. 2026-06-19 19:24 UTCEPSS rescore
  31. 2026-06-18 17:51 UTCEPSS rescore
  32. 2026-06-18 01:05 UTCOSV refresh
  33. 2026-06-17 17:51 UTCEPSS rescore
  34. 2026-06-16 17:51 UTCEPSS rescore
  35. 2026-06-16 17:51 UTCEPSS rescore
  36. 2026-06-15 17:47 UTCEPSS rescore
  37. 2026-06-14 23:16 UTCEPSS rescore
  38. 2026-06-13 22:59 UTCEPSS rescore
  39. 2026-06-13 22:59 UTCEPSS rescore
  40. 2026-06-12 23:11 UTCEPSS rescore
  41. 2026-06-11 13:59 UTCEPSS rescore
  42. 2026-06-10 22:17 UTCEPSS rescore
  43. 2026-06-10 13:21 UTCEPSS rescore
  44. 2026-06-08 14:16 UTCEPSS rescore
  45. 2026-06-08 14:16 UTCEPSS rescore
  46. 2026-06-07 15:24 UTCEPSS rescore
  47. 2026-06-07 15:24 UTCEPSS rescore
  48. 2026-06-06 13:46 UTCEPSS rescore
  49. 2026-06-06 13:46 UTCEPSS rescore
  50. 2026-06-05 22:46 UTCEPSS rescore
  51. 2026-06-05 22:46 UTCEPSS rescore
  52. 2026-06-05 06:09 UTCEPSS rescore
  53. 2026-06-05 06:09 UTCEPSS rescore
  54. 2026-06-04 13:11 UTCEPSS rescore
  55. 2026-06-04 13:11 UTCEPSS rescore
  56. 2026-06-02 20:12 UTCEPSS rescore
  57. 2026-06-02 20:12 UTCEPSS rescore
  58. 2026-06-01 13:51 UTCEPSS rescore
  59. 2026-05-31 22:30 UTCEPSS rescore
  60. 2026-05-31 22:30 UTCEPSS rescore
  61. 2026-05-31 00:15 UTCEPSS rescore
  62. 2026-05-31 00:15 UTCEPSS rescore
  63. 2026-05-29 21:29 UTCEG score recompute
  64. 2026-05-29 21:29 UTCVendor advisory
  65. 2026-05-29 21:29 UTCGHSA enrichment
  66. 2026-05-29 13:43 UTCEPSS rescore

Frequently asked(4)

What is CVE-2023-53539?
CVE-2023-53539 is a medium vulnerability published on October 4, 2025. In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix incomplete state save in rxe_requester If a send packet is dropped by the IP layer in rxe_requester() the call to rxexmitpacket() can fail with err == -EAGAIN. To recover, the state of the wqe is restored to the state…
When was CVE-2023-53539 disclosed?
CVE-2023-53539 was first published in the National Vulnerability Database on October 4, 2025, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53539 actively exploited?
CVE-2023-53539 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 95.7% of all scored CVEs.
How do I remediate CVE-2023-53539?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53539, 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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