CVE-2026-98853

net: gso: limit recursive IP-in-IP segmentation

Products / packages Linux

Published 18/10/2026, 15:51:02 UTC

Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 22:05:30 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

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

Source excerpt · Linux

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Linux · Linux

Linux

4 ranges

Linux version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

3347c960295583eee3fd58e5c539fb1972fbc005 → before cadffc83ee1a560d5cd18e6d607c1d76f6fd4bd4

git versions

3347c960295583eee3fd58e5c539fb1972fbc005 → before 388604279da3d0698a151efa4fb6d852efa0de4a

git versions

3347c960295583eee3fd58e5c539fb1972fbc005 → before c949646c900e879afce47df1b607fa320eb63bf2

git versions

3347c960295583eee3fd58e5c539fb1972fbc005 → before 006c8b834aed8b02bd8fb9fb05e9e7ead37d1763

git versions

Other versions: unaffected

Linux · Linux

Linux

6 ranges

Linux version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

affected

3.13

unaffected

0 → before 3.13

semver versions

6.12.117 → through 6.12.*

semver versions

6.18.60 → through 6.18.*

semver versions

7.2.10 → through 7.2.*

semver versions

7.3 → through *

original_commit_for_fix versions

Other versions: affected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

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

net: gso: limit recursive IP-in-IP segmentation

IP-in-IP GSO can re-enter inet_gso_segment() or ipv6_gso_segment() for each nested IP header. encap_level tracks header bytes, not callback depth, so a deep chain can exhaust the kernel stack. Making inet_gso_segment() stackable introduced unbounded IPv4 nesting; IPIP GSO/TSO later made the path reachable. The IPv6 stackable path was introduced separately and uses the same guard.

Count IPv4 and IPv6 GSO handler entries in skb_gso_cb, initialized once per top-level GSO operation and preserved across GRE/UDP context changes. Use the existing IP_TUNNEL_RECURSION_LIMIT for both handlers. The first five entries pass, and the sixth returns -EINVAL before dispatching another GSO callback.

References

4 sources

git.kernel.org/stable/c/cadffc83ee1a560d5cd18e6d607c1d76f6fd4bd4

Source referenceLinux

git.kernel.org/stable/c/388604279da3d0698a151efa4fb6d852efa0de4a

Source referenceLinux

git.kernel.org/stable/c/c949646c900e879afce47df1b607fa320eb63bf2

Source referenceLinux

git.kernel.org/stable/c/006c8b834aed8b02bd8fb9fb05e9e7ead37d1763

Source referenceLinux

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance · not supplied

Weakness classification · not supplied

Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-98853

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

Linux · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 3.13

After:

Through (inclusive):

Before: 6.12.117

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 3.13

After:

Through (inclusive):

Before: 6.18.60

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 3.13

After:

Through (inclusive):

Before: 7.2.10

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 3.13

After:

Through (inclusive):

Before: 7.3

Applicability preview

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Contributing organizations · 1

Linux

Assigning organization

2026-11-10

Timeline

All times UTC

18 Oct 2026, 15:51
Advisory published
Publication date supplied by the source.
10 Nov 2026, 18:15
Source updated
Latest modification date supplied by the source.
10 Nov 2026, 18:25
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes

CVE · CVE-2026-988532026-11-10

Observed 2026-11-10T18:25:22.564Z · upstream updated 2026-11-10T18:15:20.032Z

Product or version evidence changed

before

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        "versionType": "git"
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  },
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        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.10",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
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after

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        "versionType": "git"
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        "status": "affected",
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        "versionType": "git"
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        "version": "0",
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        "lessThan": "3.13",
        "versionType": "semver"
      },
      {
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        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
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      {
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        "versionType": "semver"
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References changed

before

[
  "https://git.kernel.org/stable/c/388604279da3d0698a151efa4fb6d852efa0de4a",
  "https://git.kernel.org/stable/c/c949646c900e879afce47df1b607fa320eb63bf2",
  "https://git.kernel.org/stable/c/006c8b834aed8b02bd8fb9fb05e9e7ead37d1763"
]

after

[
  "https://git.kernel.org/stable/c/cadffc83ee1a560d5cd18e6d607c1d76f6fd4bd4",
  "https://git.kernel.org/stable/c/388604279da3d0698a151efa4fb6d852efa0de4a",
  "https://git.kernel.org/stable/c/c949646c900e879afce47df1b607fa320eb63bf2",
  "https://git.kernel.org/stable/c/006c8b834aed8b02bd8fb9fb05e9e7ead37d1763"
]

Environment requirements changed

before

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after

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              },
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                "versionStartIncluding": "3.13",
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              },
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                "versionEndExcluding": "7.2.10"
              },
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                "vulnerable": true,
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                "versionStartIncluding": "3.13",
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            ]
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      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

Reading the signals

Severity · CVSS: Technical impact and attack conditions. No numeric assessment supplied.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

Record identifiers

Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-98853

Enrichment coverage

NVDNot fully checked

GHSANot fully checked

EUVDNot fully checked

EPSSNot fully checked

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

net: gso: limit recursive IP-in-IP segmentation

Severity and exploitation

What this means

Attack conditions

Affected versions

Linux

affected

unaffected

unknown

Linux

affected

unaffected

unknown

What to do

Public exploit evidence

Original source description

References

Inside the record

Evidence available

Original records

Environment requirements

Timeline

Advisory published

Source updated

Last imported by cve.new

What changed