CVE-2026-64580

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

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:

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst()

On the error path where in6_dev_get(dev) returns NULL, xfrm6_fill_dst() releases the device reference with netdev_put() but leaves xdst->u.dst.dev set. dst_destroy() later calls netdev_put(dst->dev) again, so the same net_device reference is released twice, underflowing its refcount (ref_tracker WARNING + "unregister_netdevice: waiting for to become free").

Clear xdst->u.dst.dev after the netdev_put(), the same way the XFRM device-offload paths xfrm_dev_state_add() and xfrm_dev_policy_add() in net/xfrm/xfrm_device.c NULL ->dev when releasing the reference on error.

ref_tracker: reference already released. ref_tracker: allocated in: xfrm6_fill_dst (net/ipv6/xfrm6_policy.c:86) ... udpv6_sendmsg (net/ipv6/udp.c:1696) ... ref_tracker: freed in: xfrm6_fill_dst (net/ipv6/xfrm6_policy.c:90) ... WARNING: lib/ref_tracker.c:322 at ref_tracker_free+0x58b/0x780 dst_destroy (net/core/dst.c:115) rcu_core handle_softirqs ...

CVSS v3
7.8
EG Score
7.8(high)
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
2%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 8, 2026
No patch confirmed yet.
generic

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ff636d7b7cba6dea82ecf580415ea57f2c1a11b6
generic

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e078da1b4e11390cff3201c19a9a1fe70c5b934f
generic

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df6856c2dda9187601d29b5fbd7a81b3b178cedf
generic

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/43de8a49335e611adb271bbd52e84dfbc11fc185
generic

xfrm6: clear dst.dev on error to avoid double netdev_put in xfrm6_fill_dst() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/136992de9bb91871084ae52d172610541c76e4d2

Vendor Advisories for CVE-2026-64580(2)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (500 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (338 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)6.12.101-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.6-1—

Data Freshness Timeline

(refreshed 47× in last 7d / 82× 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. 2026-08-20 18:49 UTCVendor advisory
  2. 2026-08-20 18:49 UTCGHSA enrichment
  3. 2026-08-20 06:08 UTCGHSA enrichment
  4. 2026-08-19 17:26 UTCEG score recompute
  5. 2026-08-19 17:26 UTCVendor advisory
  6. 2026-08-19 17:26 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 16:56 UTCEG score recompute
  9. 2026-08-19 16:56 UTCVendor advisory
  10. 2026-08-19 16:56 UTCGHSA enrichment
  11. 2026-08-19 10:25 UTCVendor advisory
  12. 2026-08-19 10:25 UTCGHSA enrichment
  13. 2026-08-18 21:43 UTCEG score recompute
  14. 2026-08-18 21:43 UTCVendor advisory
  15. 2026-08-18 21:43 UTCGHSA enrichment
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-18 08:39 UTCGHSA enrichment
  18. 2026-08-17 19:32 UTCEG score recompute
  19. 2026-08-17 19:32 UTCVendor advisory
  20. 2026-08-17 19:32 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 05:42 UTCEG score recompute
  23. 2026-08-17 05:42 UTCVendor advisory
  24. 2026-08-17 05:42 UTCGHSA enrichment
  25. 2026-08-17 05:13 UTCEG score recompute
Show 57 more
  1. 2026-08-17 05:13 UTCVendor advisory
  2. 2026-08-17 05:13 UTCGHSA enrichment
  3. 2026-08-17 02:24 UTCEG score recompute
  4. 2026-08-17 02:24 UTCVendor advisory
  5. 2026-08-17 02:24 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 13:42 UTCEG score recompute
  8. 2026-08-16 13:42 UTCVendor advisory
  9. 2026-08-16 13:42 UTCGHSA enrichment
  10. 2026-08-16 01:00 UTCVendor advisory
  11. 2026-08-16 01:00 UTCGHSA enrichment
  12. 2026-08-15 12:18 UTCEG score recompute
  13. 2026-08-15 12:18 UTCVendor advisory
  14. 2026-08-15 12:18 UTCGHSA enrichment
  15. 2026-08-15 01:30 UTCEPSS rescore
  16. 2026-08-14 23:36 UTCVendor advisory
  17. 2026-08-14 23:36 UTCGHSA enrichment
  18. 2026-08-14 10:55 UTCVendor advisory
  19. 2026-08-14 10:55 UTCGHSA enrichment
  20. 2026-08-13 22:13 UTCEG score recompute
  21. 2026-08-13 22:13 UTCVendor advisory
  22. 2026-08-13 22:13 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-13 09:31 UTCVendor advisory
  25. 2026-08-13 09:31 UTCGHSA enrichment
  26. 2026-08-12 20:50 UTCEG score recompute
  27. 2026-08-12 20:50 UTCGHSA enrichment
  28. 2026-08-12 13:51 UTCEPSS rescore
  29. 2026-08-12 08:08 UTCVendor advisory
  30. 2026-08-12 08:08 UTCGHSA enrichment
  31. 2026-08-11 19:26 UTCEG score recompute
  32. 2026-08-11 19:26 UTCVendor advisory
  33. 2026-08-11 19:26 UTCGHSA enrichment
  34. 2026-08-11 06:44 UTCEG score recompute
  35. 2026-08-11 06:44 UTCVendor advisory
  36. 2026-08-11 06:44 UTCGHSA enrichment
  37. 2026-08-11 00:00 UTCEPSS rescore
  38. 2026-08-10 18:03 UTCGHSA enrichment
  39. 2026-08-10 05:21 UTCGHSA enrichment
  40. 2026-08-09 16:40 UTCEG score recompute
  41. 2026-08-09 16:40 UTCVendor advisory
  42. 2026-08-09 16:40 UTCGHSA enrichment
  43. 2026-08-09 13:47 UTCEPSS rescore
  44. 2026-08-09 03:58 UTCEG score recompute
  45. 2026-08-09 03:58 UTCGHSA enrichment
  46. 2026-08-08 16:37 UTCEPSS rescore
  47. 2026-08-08 15:17 UTCEG score recompute▲ 7.80
  48. 2026-08-08 15:17 UTCGHSA enrichment
  49. 2026-08-08 15:16 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  50. 2026-08-08 04:36 UTCEG score recompute
  51. 2026-08-08 04:36 UTCGHSA enrichment
  52. 2026-08-06 13:47 UTCEPSS rescore
  53. 2026-08-05 19:17 UTCEPSS rescore
  54. 2026-08-05 19:17 UTCEPSS rescore
  55. 2026-08-05 08:20 UTCNVD update
  56. 2026-08-05 08:12 UTCEG score recompute
  57. 2026-08-05 08:10 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-64580?
CVE-2026-64580 is a high vulnerability published on August 5, 2026. In the Linux kernel, the following vulnerability has been resolved: xfrm6: clear dst.dev on error to avoid double netdevput in xfrm6fill_dst() On the error path where in6devget(dev) returns NULL, xfrm6filldst() releases the device reference with netdev_put() but leaves xdst->u.dst.dev set.…
When was CVE-2026-64580 disclosed?
CVE-2026-64580 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64580 actively exploited?
CVE-2026-64580 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 97.9% of all scored CVEs.
What is the CVSS score of CVE-2026-64580?
CVE-2026-64580 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-64580?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64580, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64580

Explore →

Is Your Infrastructure Affected by CVE-2026-64580?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs