Skip to content
Heist/ feed
Unrated

scsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry() qla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL check and again when assigning it to req. The map slot is cleared by qla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock) during queue teardown, while the response-queue interrupt that drives qla2x00_error_entry() is still registered (the IRQ is released later in qla25xx_free_rsp_que()). If the slot is set to NULL between the two reads, req becomes NULL and is dereferenced. Read the slot once into req and NULL-check the local before use. mq_lock is a mutex and cannot be taken from interrupt context, so the single read plus local check is the appropriate fix for the reported NULL dereference.

Announced Group revision 1
Original source ↗

CVE-2026-89845

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89845

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "c845f2597787ef70159a32566669e308b2807a56",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "fe04b31e386aee4cc3a18f07462af146037dc389",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "1b995cf4157465357d66ba096e7cdaafab9972e7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "d79376fbd2a076de82c1cd8aa0b600b300c75a44",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "1c90b74e484ba48f31944fe04963d99e01ac3767",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "5dd9bec8004ba93cee8b689bf54ce294f59e5e3c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "35124cfa9898b2088ee72859e573e0876aff66fc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a6fe35c052c4fdd1e8e21251f14eea0bd4bbd25b",
        "lessThan": "deb8abde83a799d2501f3977f6d6051000253f5e",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_isr.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.4"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.4",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.51",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/scsi/qla2xxx/qla_isr.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89845

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36296 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89845 · Revision 1Source updated