CVE-2026-53091

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. a secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

net: pull headers in qdisc_pkt_len_segs_init()

Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head.

net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len);

qdisc_pkt_len_segs_init() already does a dissection of gso packets.

Use pskb_may_pull() instead of skb_header_pointer() to make sure drivers do not have to reimplement this.

Some malicious packets could be fed, detect them so that we can drop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
42
EG Risk 42/100

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
Severity84% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

Published

June 24, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Jun 28, 2026
Patch available.
generic

net: pull headers in qdisc_pkt_len_segs_init() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a
generic

net: pull headers in qdisc_pkt_len_segs_init() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7fb4c19670110f052c04e1ec1d2b953b9f4f57e4

Vendor Advisories for CVE-2026-53091(8)

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

Patch Availability(15)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-23ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-23ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-23ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-23ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-09-23ubuntu
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-23ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-23ubuntu
redhatkernel-0:5.14.0-687.47.1.el9_82026-09-14redhat
redhatkernel-rt-0:4.18.0-553.162.1.rt7.503.el8_102026-09-10redhat
redhatkernel-0:4.18.0-553.162.1.el8_102026-09-10redhat
redhatkernel-0:6.12.0-211.53.1.el10_22026-09-08redhat

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 rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)
  • every version up to 7.0.10-1: fixed in 7.0.10-1
—

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 7× in last 7d / 46× 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 303 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53091?
CVE-2026-53091 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdiscpktlensegsinit() Most ndostartxmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particularly at risk, because tsobuildhdr() does a memcpy(hdr, skb->data,…
When was CVE-2026-53091 disclosed?
CVE-2026-53091 was first published on June 24, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53091 actively exploited?
CVE-2026-53091 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53091?
CVE-2026-53091 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53091?
A fix for CVE-2026-53091 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53091 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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