CVE-2025-71304

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 5 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: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

smack: /smack/doi: accept previously used values

Writing to /smack/doi a value that has ever been written there in the past disables networking for non-ambient labels. E.g.

# cat /smack/doi 3 # netlabelctl -p cipso list Configured CIPSO mappings (1) DOI value : 3 mapping type : PASS_THROUGH # netlabelctl -p map list Configured NetLabel domain mappings (3) domain: "_" (IPv4) protocol: UNLABELED domain: DEFAULT (IPv4) protocol: CIPSO, DOI = 3 domain: DEFAULT (IPv6) protocol: UNLABELED

# cat /smack/ambient _ # cat /proc/$$/attr/smack/current _ # ping -c1 10.1.95.12 64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.964 ms # echo foo >/proc/$$/attr/smack/current # ping -c1 10.1.95.12 64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.956 ms unknown option 86

# echo 4 >/smack/doi # echo 3 >/smack/doi !> [ 214.050395] smk_cipso_doi:691 cipso add rc = -17 # echo 3 >/smack/doi !> [ 249.402261] smk_cipso_doi:678 remove rc = -2 !> [ 249.402261] smk_cipso_doi:691 cipso add rc = -17

# ping -c1 10.1.95.12 !!> ping: 10.1.95.12: Address family for hostname not supported

# echo _ >/proc/$$/attr/smack/current # ping -c1 10.1.95.12 64 bytes from 10.1.95.12: icmp_seq=1 ttl=64 time=0.617 ms

This happens because Smack keeps decommissioned DOIs, fails to re-add them, and consequently refuses to add the “default” domain map:

# netlabelctl -p cipso list Configured CIPSO mappings (2) DOI value : 3 mapping type : PASS_THROUGH DOI value : 4 mapping type : PASS_THROUGH # netlabelctl -p map list Configured NetLabel domain mappings (2) domain: "_" (IPv4) protocol: UNLABELED !> (no ipv4 map for default domain here) domain: DEFAULT (IPv6) protocol: UNLABELED

Fix by clearing decommissioned DOI definitions and serializing concurrent DOI updates with a new lock.

Also:

  • allow /smack/doi to live unconfigured, since
adding a map (netlbl_cfg_cipsov4_map_add) may fail. CIPSO_V4_DOI_UNKNOWN(0) indicates the unconfigured DOI
  • add new DOI before removing the old default map,
so the old map remains if the add fails

(2008-02-04, Casey Schaufler)

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (8)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8071500177f38cff38892bd85ac631cc6e010b2
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb718a3c8181ada679340db34cd61bce48e44749
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8beebb8ad9a003f978e53b06237986588223e15e
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6ec091c5c7eeabd249a7c46813cad1e9f555f859
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a247a84de0ba44edbbd6be851c8a6b2aa60ff85
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/33d589ed60ae433b483761987b85e0d24e54584e
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c7ee23dfcd18d80770d8f90f2ab5bb1b2bfd8a3
generic

smack: /smack/doi: accept previously used values - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/199452f22d2f74b897fe826f81ec402b0a8461a0

Vendor Advisories for CVE-2025-71304(1)

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

Patch Availability(24)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1057.58~22.04.1) @ jammy2026-09-14ubuntu
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-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-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ 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-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-09-14ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-09-14ubuntu
linuxKernel @ 5.10.252—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—

All Vendor Advisories

(23)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× 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 222 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-71304?
CVE-2025-71304 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: smack: /smack/doi: accept previously used values Writing to /smack/doi a value that has ever been written there in the past disables networking for non-ambient labels. E.g. # cat /smack/doi 3 # netlabelctl -p cipso list Configured…
When was CVE-2025-71304 disclosed?
CVE-2025-71304 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71304 actively exploited?
CVE-2025-71304 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 94.4% of all scored CVEs.
What is the CVSS score of CVE-2025-71304?
CVE-2025-71304 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-71304?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71304, 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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