Vulnerability-Lookup

FKIE_CVE-2026-31683

Vulnerability from fkie_nvd - Published: 2026-04-25 09:16 - Updated: 2026-05-06 21:14

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: batman-adv: avoid OGM aggregation when skb tailroom is insufficient When OGM aggregation state is toggled at runtime, an existing forwarded packet may have been allocated with only packet_len bytes, while a later packet can still be selected for aggregation. Appending in this case can hit skb_put overflow conditions. Reject aggregation when the target skb tailroom cannot accommodate the new packet. The caller then falls back to creating a new forward packet instead of appending.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0d4aef630be9d5f9c1227d07669c26c4383b5ad0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1ada20331f2df2a942d6b83ae1f04a304b642e2a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/67176c96f325837b0bb3e9538ca2eba414f447d8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6755347c5f9bdd44dee80f692208b056fcd40a52	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eda89a1bae0602aec8314ced299bb243b9f9aeef	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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CVE-2026-31683 (GCVE-0-2026-31683)

Vulnerability from cvelistv5 – Published: 2026-04-25 08:47 – Updated: 2026-04-27 14:05

Title

batman-adv: avoid OGM aggregation when skb tailroom is insufficient

Summary

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/67176c96f325837b0…
	https://git.kernel.org/stable/c/0b10a8b355c3f7101…
	https://git.kernel.org/stable/c/6755347c5f9bdd44d…
	https://git.kernel.org/stable/c/1ada20331f2df2a94…
	https://git.kernel.org/stable/c/6e40ebb999c2c3d2f…
	https://git.kernel.org/stable/c/0e35db29fc5a97a85…
	https://git.kernel.org/stable/c/eda89a1bae0602aec…
	https://git.kernel.org/stable/c/0d4aef630be9d5f9c…

Impacted products

Vendor

Product

Version

Linux

Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 67176c96f325837b0bb3e9538ca2eba414f447d8 (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 0b10a8b355c3f71012ce89289ec2c2f5e3bfd6c1 (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 6755347c5f9bdd44dee80f692208b056fcd40a52 (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 1ada20331f2df2a942d6b83ae1f04a304b642e2a (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 6e40ebb999c2c3d2fbb3cacb61f0384ee6e69075 (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 0e35db29fc5a97a8553f7c2d3a2ba730e46b1ee8 (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < eda89a1bae0602aec8314ced299bb243b9f9aeef (git)
Affected: c6c8fea29769d998d94fcec9b9f14d4b52b349d3 , < 0d4aef630be9d5f9c1227d07669c26c4383b5ad0 (git)

Linux

Affected: 2.6.38
Unaffected: 0 , < 2.6.38 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/bat_iv_ogm.c"
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      "title": "batman-adv: avoid OGM aggregation when skb tailroom is insufficient",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-31683

CVE-2026-31683 (GCVE-0-2026-31683)

Tags

Sightings

Nomenclature