CVE-2026-52919

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. 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

A fix is available — apply it.

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

batman-adv: fix tp_meter counter underflow during shutdown

batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1.

Since the sender logic treats any non-zero value as "still sending", a negative value causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is removed while the zombie thread is still active.

Fix this by using atomic_xchg() to ensure the counter only transitions from 1 to 0 once.

[sven: added missing change in batadv_tp_send]

CVSS v3
7.8
EG Score
7.8(medium)
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

June 24, 2026

Last Modified

July 8, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e75e2ab463b5b34df6b98f94d740aff327ce9f6b
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c66d20a3ff095e3f000551d208ec2606616db15c
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c1bac194733aabd731aafa6a01350c229e187dba
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aeae11c5dad9cd0d50723890bdd866f8e6db2e7d
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/abae88fa254f2981d39ac003a7b302528a22af64
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/94f3b133168d1c49895e7cc6afbcf1cc0b354602
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/90ae3eae06b7b8ab9f6250b9497c860915b4c17b
generic

batman-adv: fix tp_meter counter underflow during shutdown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/01cefc5923889e29dbb5f281c3d457714ceb9c00

Vendor Advisories for CVE-2026-52919(2)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-28ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.186.196~20.04.1) @ focal2026-07-28ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-28ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-28ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-28ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1112.119~20.04.1) @ focal2026-07-28ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-28ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-28ubuntu

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.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(11)

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 16× in last 7d / 113× 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 121 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-52919?
CVE-2026-52919 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadvtpsender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the…
When was CVE-2026-52919 disclosed?
CVE-2026-52919 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52919 actively exploited?
CVE-2026-52919 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 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-52919?
CVE-2026-52919 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-52919?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52919, 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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