Vulnerability-Lookup

GHSA-WFX4-V2WF-4GMP

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-07-02 21:32

Details

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

tee: shm: fix shm leak in register_shm_helper()

register_shm_helper() allocates shm before calling iov_iter_npages(). If iov_iter_npages() returns 0, the function jumps to err_ctx_put and leaks shm.

This can be triggered by TEE_IOC_SHM_REGISTER with struct tee_ioctl_shm_register_data where length is 0.

Jump to err_free_shm instead.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53210"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:38Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: shm: fix shm leak in register_shm_helper()\n\nregister_shm_helper() allocates shm before calling\niov_iter_npages(). If iov_iter_npages() returns 0, the function\njumps to err_ctx_put and leaks shm.\n\nThis can be triggered by TEE_IOC_SHM_REGISTER with\nstruct tee_ioctl_shm_register_data where length is 0.\n\nJump to err_free_shm instead.",
  "id": "GHSA-wfx4-v2wf-4gmp",
  "modified": "2026-07-02T21:32:04Z",
  "published": "2026-06-25T09:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53210"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26682f5efc276e3ad96d102019472bfbf03833b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4277759906b44d923a38c8f59f5576501b187b0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c10c9c48b2903f41ed4c532043b0576e86228236"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dbf779db927414f5b37c1f666013e9b48a88cfde"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53210 (GCVE-0-2026-53210)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39

Title

tee: shm: fix shm leak in register_shm_helper()

Summary

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in register_shm_helper() register_shm_helper() allocates shm before calling iov_iter_npages(). If iov_iter_npages() returns 0, the function jumps to err_ctx_put and leaks shm. This can be triggered by TEE_IOC_SHM_REGISTER with struct tee_ioctl_shm_register_data where length is 0. Jump to err_free_shm instead.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/4277759906b44d923…
https://git.kernel.org/stable/c/c10c9c48b2903f41e…
https://git.kernel.org/stable/c/dbf779db927414f5b…
https://git.kernel.org/stable/c/26682f5efc276e3ad…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7bdee41575919773818e525ea19e54eb817770af , < 4277759906b44d923a38c8f59f5576501b187b0d (git) Affected: 7bdee41575919773818e525ea19e54eb817770af , < c10c9c48b2903f41ed4c532043b0576e86228236 (git) Affected: 7bdee41575919773818e525ea19e54eb817770af , < dbf779db927414f5b37c1f666013e9b48a88cfde (git) Affected: 7bdee41575919773818e525ea19e54eb817770af , < 26682f5efc276e3ad96d102019472bfbf03833b2 (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
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        {
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          "programFiles": [
            "drivers/tee/tee_shm.c"
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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.

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