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CVE-2026-43414 (GCVE-0-2026-43414)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-08-05 12:27
VLAI
Title
scsi: qla2xxx: Completely fix fcport double free
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called by qla2x00_sp_release(), when kref_put() releases the first and the last reference. qla2x00_els_dcmd_sp_free() frees fcport by calling qla2x00_free_fcport(). Doing it one more time after kref_put() is a bad idea.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4895009c4bb72f71f2e682f1e7d2c2d96e482087 , < d48ea85463f5b34f7b92ea0a13eddf1ab993da7b (git)
Affected: 4895009c4bb72f71f2e682f1e7d2c2d96e482087 , < c0b7da13a04bd70ef6070bfb9ea85f582294560a (git)
Affected: 7861213201838480dc222634c56fb6db113d010d (git)
Affected: 3b9d72442adfbc9ddb0f76dd1b03977b3a578b16 (git)
Affected: ef23850940d9a52c39936d27254824ccf5e9b6bd (git)
Affected: 6c6bf6cacf9461f8d301cfac4f9c175d80cbcc63 (git)
Affected: cd10dee1f07a782f5aa05703c55299ca86a85ee4 (git)
Affected: b03e626bd6d3f0684f56ee1890d70fc9ca991c04 (git)
Affected: 282877633b25d67021a34169c5b5519b1d4ef65e (git)
Affected: f85af9f1aa5e2f53694a6cbe72010f754b5ff862 (git)
Affected: 9b43d2884b54d415caab48878b526dfe2ae9921b (git)
Affected: 846fb9f112f618ec6ae181d8dae7961652574774 (git)
Affected: 5.15.154 , < 5.16 (semver)
Affected: 6.1.84 , < 6.2 (semver)
Affected: 6.6.24 , < 6.7 (semver)
Affected: 6.7.12 , < 6.8 (semver)
Affected: 6.8.3 , < 6.9 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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              "value": "AV:N - The vulnerable ELS direct-command path is reachable from a remote Fibre Channel initiator through qla2xxx target-mode ELS/session-deletion handling, not only through the root-only sysfs issue_logo knob. Using the highest reasonable SAN deployment, attacker-controlled FC frames from another host on the storage fabric make this network-reachable.\nAC:L - The bug is a deterministic double free once the ELS direct-command error path is hit after kref_put(), and the attacker can plausibly drive repeated logins/logouts/session teardown plus resource pressure to make qla2x00_start_sp() fail. No uncontrollable race is required for the memory corruption once that path is reached.\nPR:N - The FC target path processes remote ELS events before any Linux credential or capability check on the victim, so the attacker does not need a local account or kernel privilege. Fabric access/zoning is environmental network access, not privileges on the vulnerable system.\nUI:N - No victim user action is required; remote FC protocol activity can drive the target-mode session deletion and LOGO path. The sysfs path requires an admin write, but it is not the highest-severity reachable path.\nS:U - The corruption occurs inside the same kernel/driver security authority and does not cross a VM, IOMMU, or other separate security boundary. A kernel compromise or crash remains unchanged scope.\nC:H - This is kernel heap double-free/use-after-free style memory corruption of an fc_port object. Under the required overestimation rule, such corruption can be leveraged for information disclosure through heap reuse/read primitives.\nI:H - A double free of a kernel heap object can corrupt allocator state or enable controlled reuse of freed memory, making arbitrary write or control-flow compromise defensible. Therefore integrity impact is High.\nA:H - Related qla2xxx fcport double-free reports show immediate SLUB/kernel BUG crashes, and this fix removes another remaining double-free error path. A remotely triggerable kernel crash is High availability impact."
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-14T18:04:33+00:00",
      "cve": "CVE-2026-43414",
      "id": "CVE-2026-43414",
      "initial_release_date": "2026-05-08T00:00:00+00:00",
      "product_status:fixed": "1224",
      "product_status:known_affected": "36",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: qla2xxx: Completely fix fcport double free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43414.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T23:35:25Z",
      "cve": "CVE-2026-43414",
      "id": "CVE-2026-43414",
      "initial_release_date": "2026-05-09T02:39:32Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "528",
      "product_status:known_not_affected": "117",
      "product_status:recommended": "397",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43414",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43414.json",
      "version": "22"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.