CVE-2025-68800

CVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

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

mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats

Cited commit added a dedicated mutex (instead of RTNL) to protect the multicast route list, so that it will not change while the driver periodically traverses it in order to update the kernel about multicast route stats that were queried from the device.

One instance of list entry deletion (during route replace) was missed and it can result in a use-after-free [1].

Fix by acquiring the mutex before deleting the entry from the list and releasing it afterwards.

[1] BUG: KASAN: slab-use-after-free in mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum] Read of size 8 at addr ffff8881523c2fa8 by task kworker/2:5/22043

CPU: 2 UID: 0 PID: 22043 Comm: kworker/2:5 Not tainted 6.18.0-rc1-custom-g1a3d6d7cd014 #1 PREEMPT(full) Hardware name: Mellanox Technologies Ltd. MSN2010/SA002610, BIOS 5.6.5 08/24/2017 Workqueue: mlxsw_core mlxsw_sp_mr_stats_update [mlxsw_spectrum] Call Trace: dump_stack_lvl+0xba/0x110 print_report+0x174/0x4f5 kasan_report+0xdf/0x110 mlxsw_sp_mr_stats_update+0x4a5/0x540 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:1006 [mlxsw_spectrum] process_one_work+0x9cc/0x18e0 worker_thread+0x5df/0xe40 kthread+0x3b8/0x730 ret_from_fork+0x3e9/0x560 ret_from_fork_asm+0x1a/0x30

Allocated by task 29933: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 mlxsw_sp_mr_route_add+0xd8/0x4770 [mlxsw_spectrum] mlxsw_sp_router_fibmr_event_work+0x371/0xad0 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:7965 [mlxsw_spectrum] process_one_work+0x9cc/0x18e0 worker_thread+0x5df/0xe40 kthread+0x3b8/0x730 ret_from_fork+0x3e9/0x560 ret_from_fork_asm+0x1a/0x30

Freed by task 29933: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_save_free_info+0x3b/0x70 __kasan_slab_free+0x43/0x70 kfree+0x14e/0x700 mlxsw_sp_mr_route_add+0x2dea/0x4770 drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c:444 [mlxsw_spectrum] mlxsw_sp_router_fibmr_event_work+0x371/0xad0 drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c:7965 [mlxsw_spectrum] process_one_work+0x9cc/0x18e0 worker_thread+0x5df/0xe40 kthread+0x3b8/0x730 ret_from_fork+0x3e9/0x560 ret_from_fork_asm+0x1a/0x30

CVSS v3
—
EG Score
0.0(none)
EPSS
7.0%
KEV
Not listed

Published

January 13, 2026

Last Modified

June 16, 2026

References (7)

Vendor Advisories for CVE-2025-68800(13)

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-azure-lts-22.04 (5.15.0.1109.107) @ jammy2026-05-21ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-05-21ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1049.50) @ noble2026-05-21ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1054.57~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1051.54.1) @ noble2026-05-21ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2042.43) @ noble2026-05-21ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1020.20) @ noble2026-05-21ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-22.22) @ questing2026-05-21ubuntu
ubuntulinux-virtual-6.8 (6.8.0-110.110) @ noble2026-05-21ubuntu
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1012.12) @ questing2026-05-21ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1047.48) @ noble2026-05-21ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.17.0-1010.11~24.04.1) @ noble2026-05-21ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-110.110~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1011.11) @ questing2026-05-21ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1054.57+fips1) @ noble2026-05-21ubuntu
ubuntulinux-tools-nvidia-64k-6.8 (6.8.0-1051.54) @ noble2026-05-21ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1022.22) @ noble2026-05-21ubuntu
ubuntulinux-tools-raspi-6.17 (6.17.0-1014.14) @ questing2026-05-21ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1054.60+fips1) @ noble2026-05-21ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1054.60) @ noble2026-05-21ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1029.30) @ noble2026-05-21ubuntu
redhatkernel-0:5.14.0-427.121.1.el9_42026-04-23redhat
redhatkernel-0:5.14.0-284.166.1.el9_22026-04-22redhat
redhatkernel-rt-0:5.14.0-284.166.1.rt14.451.el9_22026-04-22redhat
redhatkernel-0:5.14.0-570.103.1.el9_62026-03-30redhat
redhatkernel-0:5.14.0-611.41.1.el9_72026-03-17redhat
redhatkernel-0:5.14.0-611.38.1.el9_72026-03-09redhat
redhatkernel-0:6.12.0-124.39.1.el10_12026-02-25redhat
redhatkernel-rt-0:4.18.0-553.107.1.rt7.448.el8_102026-02-23redhat
redhatkernel-0:4.18.0-553.107.1.el8_102026-02-23redhat
linuxKernel @ 5.10.248—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.

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 11× in last 7d / 45× 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 117 total refreshes for this CVE.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
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  21. 2026-07-09 20:17 UTCOSV refresh
  22. 2026-07-09 19:10 UTCEPSS rescore
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  24. 2026-07-07 13:46 UTCEPSS rescore
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  1. 2026-07-06 02:23 UTCEPSS rescore
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  9. 2026-06-29 14:06 UTCEPSS rescore
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  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 06:05 UTCOSV refresh
  26. 2026-06-21 02:42 UTCMITRE cvelistV5
  27. 2026-06-21 01:59 UTCEPSS rescore
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-19 19:25 UTCEPSS rescore
  30. 2026-06-19 19:25 UTCEPSS rescore
  31. 2026-06-18 17:52 UTCEPSS rescore
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  42. 2026-06-10 22:18 UTCEPSS rescore
  43. 2026-06-10 13:22 UTCEPSS rescore
  44. 2026-06-08 14:17 UTCEPSS rescore
  45. 2026-06-08 14:17 UTCEPSS rescore
  46. 2026-06-07 15:24 UTCEPSS rescore
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  48. 2026-06-06 13:47 UTCEPSS rescore
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  50. 2026-06-05 22:47 UTCEPSS rescore
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  56. 2026-06-02 20:13 UTCEPSS rescore
  57. 2026-06-01 18:57 UTCOSV refresh
  58. 2026-06-01 13:51 UTCEPSS rescore
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Frequently asked(4)

What is CVE-2025-68800?
CVE-2025-68800 is a publicly disclosed vulnerability published on January 13, 2026. In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats Cited commit added a dedicated mutex (instead of RTNL) to protect the multicast route list, so that it will not change while the driver periodically…
When was CVE-2025-68800 disclosed?
CVE-2025-68800 was first published in the National Vulnerability Database on January 13, 2026, 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-2025-68800 actively exploited?
CVE-2025-68800 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2025-68800?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-68800, 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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