Vulnerability-Lookup

FKIE_CVE-2026-31622

Vulnerability from fkie_nvd - Published: 2026-04-24 15:16 - Updated: 2026-06-01 17:16

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: NFC: digital: Bounds check NFC-A cascade depth in SDD response handler The NFC-A anti-collision cascade in digital_in_recv_sdd_res() appends 3 or 4 bytes to target->nfcid1 on each round, but the number of cascade rounds is controlled entirely by the peer device. The peer sets the cascade tag in the SDD_RES (deciding 3 vs 4 bytes) and the cascade-incomplete bit in the SEL_RES (deciding whether another round follows). ISO 14443-3 limits NFC-A to three cascade levels and target->nfcid1 is sized accordingly (NFC_NFCID1_MAXSIZE = 10), but nothing in the driver actually enforces this. This means a malicious peer can keep the cascade running, writing past the heap-allocated nfc_target with each round. Fix this by rejecting the response when the accumulated UID would exceed the buffer. Commit e329e71013c9 ("NFC: nci: Bounds check struct nfc_target arrays") fixed similar missing checks against the same field on the NCI path.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1bec5698b55aa2be5c3b983dba657c01d0fd3dbc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/20663102c14566e900e1d2f679e30b7f1694f387
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2819f34e08bdffb6f06a51c67948ec5737fb166a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8d9d9bf3565271ca7ab9c716a94e87296177e7ba	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9ba6bb09e00b922d902f684f575779e5433fe6e3
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cc024a3de265ef6c58957f4990eccb9f806208cb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f83b399aa05a0712e3b1569a30d3d90b3533d2ef

Impacted products

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

JSON

To clipboard

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}

CVE-2026-31622 (GCVE-0-2026-31622)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-06-01 16:12

Title

NFC: digital: Bounds check NFC-A cascade depth in SDD response handler

Summary

Severity

8.8 (High)


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

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/9ba6bb09e00b922d9…
https://git.kernel.org/stable/c/f83b399aa05a0712e…
https://git.kernel.org/stable/c/20663102c14566e90…
https://git.kernel.org/stable/c/2819f34e08bdffb6f…
https://git.kernel.org/stable/c/1bec5698b55aa2be5…
https://git.kernel.org/stable/c/5a59bf70c38ee1eb4…
https://git.kernel.org/stable/c/8d9d9bf3565271ca7…
https://git.kernel.org/stable/c/cc024a3de265ef6c5…
https://git.kernel.org/stable/c/46ce8be2ced389bcc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 9ba6bb09e00b922d902f684f575779e5433fe6e3 (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < f83b399aa05a0712e3b1569a30d3d90b3533d2ef (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 20663102c14566e900e1d2f679e30b7f1694f387 (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 2819f34e08bdffb6f06a51c67948ec5737fb166a (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 1bec5698b55aa2be5c3b983dba657c01d0fd3dbc (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1 (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 8d9d9bf3565271ca7ab9c716a94e87296177e7ba (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < cc024a3de265ef6c58957f4990eccb9f806208cb (git) Affected: 2c66daecc4092e6049673c281b2e6f0d5e59a94c , < 46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1 (git)
Linux	Linux	Affected: 3.13 Unaffected: 0 , < 3.13 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0.1 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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    "cveId": "CVE-2026-31622",
    "datePublished": "2026-04-24T14:42:39.916Z",
    "dateReserved": "2026-03-09T15:48:24.124Z",
    "dateUpdated": "2026-06-01T16:12:48.372Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-2026-31622

CVE-2026-31622 (GCVE-0-2026-31622)

Tags

Sightings

Nomenclature