CVE-2026-98526 (GCVE-0-2026-98526)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:17 – Updated: 2026-10-19 09:21
VLAI
Title
llc: reserve device headroom for allocated frames
Summary
In the Linux kernel, the following vulnerability has been resolved: llc: reserve device headroom for allocated frames llc_alloc_frame() reserves link-layer headroom using the device type. This is insufficient for stacked Ethernet devices such as VLAN devices, where vlan_dev_hard_header() pushes a VLAN header before the lower device's Ethernet header. An LLC response on such a device can therefore underflow skb headroom in eth_header(). Use LL_RESERVED_SPACE() to account for the device's actual required headroom while preserving the existing LLC device-type check.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6847 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 018020f5a48cc86fdd6dc2d380f6c70443ae7639 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 3a3f57c4061d9e9cc3bc04205d36ce41ae3406c1 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 7c38524b2b2456bd33cb360420da6cbf9cad1b33 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 1937222c2511ac91377d39f28106c34734f5f8c6 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 16ceac2daa89dd16917bc488ab05b9dd6961a603 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < e06f8b6e27cc616d3c587e9784c4a033eb310a16 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 3361c93e417384ebf28003e0fb6d5304653d3b05 (git)
Affected: bf9ae5386bca8836c16e69ab8fdbe46767d7452a , < 72b5b9a28b996e09b8b5b944370c79851bb68f52 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.34
Unaffected: 0 , < 2.6.34 (semver)
Unaffected: 5.10.271 , ≤ 5.10.* (semver)
Unaffected: 5.15.222 , ≤ 5.15.* (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        }
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      "title": "kernel: llc: reserve device headroom for allocated frames",
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      "id": "CVE-2026-98526",
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      "product_status:known_affected": "205",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98526",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98526.json",
      "version": "4"
    }
  }
}



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