Vulnerability-Lookup

GHSA-4P37-9V73-JM8H

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-30 03:37

Details

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

bpf: Fix linked reg delta tracking when src_reg == dst_reg

Consider the case of rX += rX where src_reg and dst_reg are pointers to the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first modifies the dst_reg in-place, and later in the delta tracking, the subsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the post-{add,sub} value instead of the original source.

This is problematic since it sets an incorrect delta, which sync_linked_regs() then propagates to linked registers, thus creating a verifier-vs-runtime mismatch. Fix it by just skipping this corner case.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53092"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-393"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:23Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix linked reg delta tracking when src_reg == dst_reg\n\nConsider the case of rX += rX where src_reg and dst_reg are pointers to\nthe same bpf_reg_state in adjust_reg_min_max_vals(). The latter first\nmodifies the dst_reg in-place, and later in the delta tracking, the\nsubsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the\npost-{add,sub} value instead of the original source.\n\nThis is problematic since it sets an incorrect delta, which sync_linked_regs()\nthen propagates to linked registers, thus creating a verifier-vs-runtime\nmismatch. Fix it by just skipping this corner case.",
  "id": "GHSA-4p37-9v73-jm8h",
  "modified": "2026-06-30T03:37:13Z",
  "published": "2026-06-24T18:32:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53092"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53092"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492362"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7f14173c0d5866c3cae759dee560ad1bed10d2e"
    },
    {
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    },
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      "type": "CVSS_V3"
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}

CVE-2026-53092 (GCVE-0-2026-53092)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:30 – Updated: 2026-06-30 12:09

Title

bpf: Fix linked reg delta tracking when src_reg == dst_reg

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix linked reg delta tracking when src_reg == dst_reg Consider the case of rX += rX where src_reg and dst_reg are pointers to the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first modifies the dst_reg in-place, and later in the delta tracking, the subsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the post-{add,sub} value instead of the original source. This is problematic since it sets an incorrect delta, which sync_linked_regs() then propagates to linked registers, thus creating a verifier-vs-runtime mismatch. Fix it by just skipping this corner case.

Severity

7.8 (High)


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

7 (High)


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

CWE

CWE-393 - Return of Wrong Status Code

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/d88e8e4a3b52bd5b2…
https://git.kernel.org/stable/c/cc86a8b0a1c54d2bc…
https://git.kernel.org/stable/c/d7f14173c0d5866c3…
https://access.redhat.com/security/cve/CVE-2026-53092	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492362	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

7 products

Vendor	Product	Version
Linux	Linux	Affected: 98d7ca374ba4b39e7535613d40e159f09ca14da2 , < d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066 (git) Affected: 98d7ca374ba4b39e7535613d40e159f09ca14da2 , < cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de (git) Affected: 98d7ca374ba4b39e7535613d40e159f09ca14da2 , < d7f14173c0d5866c3cae759dee560ad1bed10d2e (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

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JSON

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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.

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GHSA-4P37-9V73-JM8H

CVE-2026-53092 (GCVE-0-2026-53092)

Tags

Sightings

Nomenclature