CVE-2023-54223

UNRATEDCVSS · not yet scored
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

net/mlx5e: xsk: Fix invalid buffer access for legacy rq

The below crash can be encountered when using xdpsock in rx mode for legacy rq: the buffer gets released in the XDP_REDIRECT path, and then once again in the driver. This fix sets the flag to avoid releasing on the driver side.

XSK handling of buffers for legacy rq was relying on the caller to set the skip release flag. But the referenced fix started using fragment counts for pages instead of the skip flag.

Crash log: general protection fault, probably for non-canonical address 0xffff8881217e3a: 0000 [#1] SMP CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 6.5.0-rc1+ #31 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:bpf_prog_03b13f331978c78c+0xf/0x28 Code: ... RSP: 0018:ffff88810082fc98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888138404901 RCX: c0ffffc900027cbc RDX: ffffffffa000b514 RSI: 00ffff8881217e32 RDI: ffff888138404901 RBP: ffff88810082fc98 R08: 0000000000091100 R09: 0000000000000006 R10: 0000000000000800 R11: 0000000000000800 R12: ffffc9000027a000 R13: ffff8881217e2dc0 R14: ffff8881217e2910 R15: ffff8881217e2f00 FS: 0000000000000000(0000) GS:ffff88852c800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564cb2e2cde0 CR3: 000000010e603004 CR4: 0000000000370eb0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? die_addr+0x32/0x80 ? exc_general_protection+0x192/0x390 ? asm_exc_general_protection+0x22/0x30 ? 0xffffffffa000b514 ? bpf_prog_03b13f331978c78c+0xf/0x28 mlx5e_xdp_handle+0x48/0x670 [mlx5_core] ? dev_gro_receive+0x3b5/0x6e0 mlx5e_xsk_skb_from_cqe_linear+0x6e/0x90 [mlx5_core] mlx5e_handle_rx_cqe+0x55/0x100 [mlx5_core] mlx5e_poll_rx_cq+0x87/0x6e0 [mlx5_core] mlx5e_napi_poll+0x45e/0x6b0 [mlx5_core] __napi_poll+0x25/0x1a0 net_rx_action+0x28a/0x300 __do_softirq+0xcd/0x279 ? sort_range+0x20/0x20 run_ksoftirqd+0x1a/0x20 smpboot_thread_fn+0xa2/0x130 kthread+0xc9/0xf0 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 Modules linked in: mlx5_ib mlx5_core rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm ib_uverbs ib_core xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter overlay zram zsmalloc fuse [last unloaded: mlx5_core] ---[ end trace 0000000000000000 ]---

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

December 30, 2025

Last Modified

April 15, 2026

References (2)

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.4.10—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 8× in last 7d / 41× 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 125 total refreshes for this CVE.

  1. 2026-08-01 04:14 UTCEPSS rescore
  2. 2026-07-30 16:26 UTCEPSS rescore
  3. 2026-07-30 01:29 UTCEPSS rescore
  4. 2026-07-28 15:34 UTCEPSS rescore
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  6. 2026-07-27 03:09 UTCOSV refresh
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  11. 2026-07-23 02:30 UTCEG score recompute
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  13. 2026-07-22 14:07 UTCEPSS rescore
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  1. 2026-07-13 22:28 UTCEPSS rescore
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  5. 2026-07-11 08:26 UTCEPSS rescore
  6. 2026-07-09 21:45 UTCOSV refresh
  7. 2026-07-09 19:08 UTCEPSS rescore
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  23. 2026-06-28 04:55 UTCEPSS rescore
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  25. 2026-06-25 13:48 UTCEPSS rescore
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  27. 2026-06-24 14:04 UTCEPSS rescore
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  35. 2026-06-21 07:31 UTCOSV refresh
  36. 2026-06-21 01:58 UTCEPSS rescore
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  40. 2026-06-18 17:51 UTCEPSS rescore
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  45. 2026-06-14 23:16 UTCEPSS rescore
  46. 2026-06-13 22:59 UTCEPSS rescore
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  48. 2026-06-12 23:11 UTCEPSS rescore
  49. 2026-06-11 13:59 UTCEPSS rescore
  50. 2026-06-10 22:17 UTCEPSS rescore
  51. 2026-06-10 13:21 UTCEPSS rescore
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  66. 2026-06-01 21:11 UTCOSV refresh
  67. 2026-06-01 13:51 UTCEPSS rescore
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  75. 2026-05-27 13:40 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2023-54223?
CVE-2023-54223 is a publicly disclosed vulnerability published on December 30, 2025. In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix invalid buffer access for legacy rq The below crash can be encountered when using xdpsock in rx mode for legacy rq: the buffer gets released in the XDP_REDIRECT path, and then once again in the driver. This fix…
When was CVE-2023-54223 disclosed?
CVE-2023-54223 was first published in the National Vulnerability Database on December 30, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54223 actively exploited?
CVE-2023-54223 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 94.2% of all scored CVEs.
How do I remediate CVE-2023-54223?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54223, 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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