Vulnerability-Lookup

FKIE_CVE-2026-31464

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-05-07 18:28

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done() A malicious or compromised VIO server can return a num_written value in the discover targets MAD response that exceeds max_targets. This value is stored directly in vhost->num_targets without validation, and is then used as the loop bound in ibmvfc_alloc_targets() to index into disc_buf[], which is only allocated for max_targets entries. Indices at or beyond max_targets access kernel memory outside the DMA-coherent allocation. The out-of-bounds data is subsequently embedded in Implicit Logout and PLOGI MADs that are sent back to the VIO server, leaking kernel memory. Fix by clamping num_written to max_targets before storing it.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4ed727e35b0ab17d3eeeb1e8023768396e2be161	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/61d099ac4a7a8fb11ebdb6e2ec8d77f38e77362f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/786f10b1966e485046839f992e89f2c18cbd1983	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a007246cb6c9ebdc93dafbf63cc2d43d98f402cc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bae4df0a643fa7f84663473aa3082a9c2ed139db	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d1466bf991b2343cf2ba8336e440c8faf3cbb780	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d842348f8a00d5b1d7358f207eb34ffcf5b16df3	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
linux	linux_kernel	7.0

JSON

To clipboard

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CVE-2026-31464 (GCVE-0-2026-31464)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-05-11 22:09

Title

scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()

Summary

Severity

8.1 (High)


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

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/d842348f8a00d5b1d…
https://git.kernel.org/stable/c/a007246cb6c9ebdc9…
https://git.kernel.org/stable/c/394a1cac3c12fdd7d…
https://git.kernel.org/stable/c/4ed727e35b0ab17d3…
https://git.kernel.org/stable/c/d1466bf991b2343cf…
https://git.kernel.org/stable/c/786f10b1966e48504…
https://git.kernel.org/stable/c/bae4df0a643fa7f84…
https://git.kernel.org/stable/c/61d099ac4a7a8fb11…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < d842348f8a00d5b1d7358f207eb34ffcf5b16df3 (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < a007246cb6c9ebdc93dafbf63cc2d43d98f402cc (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < 394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89 (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < 4ed727e35b0ab17d3eeeb1e8023768396e2be161 (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < d1466bf991b2343cf2ba8336e440c8faf3cbb780 (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < 786f10b1966e485046839f992e89f2c18cbd1983 (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < bae4df0a643fa7f84663473aa3082a9c2ed139db (git) Affected: 072b91f9c6510d0ec4a49d07dbc318760c7da7b3 , < 61d099ac4a7a8fb11ebdb6e2ec8d77f38e77362f (git)
Linux	Linux	Affected: 2.6.27 Unaffected: 0 , < 2.6.27 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (semver) Unaffected: 6.12.80 , ≤ 6.12.* (semver) Unaffected: 6.18.21 , ≤ 6.18.* (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "programFiles": [
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31464",
    "datePublished": "2026-04-22T13:53:54.970Z",
    "dateReserved": "2026-03-09T15:48:24.097Z",
    "dateUpdated": "2026-05-11T22:09:14.078Z",
    "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-2026-31464

CVE-2026-31464 (GCVE-0-2026-31464)

Tags

Sightings

Nomenclature