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CVE-2022-49376 (GCVE-0-2022-49376)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:11 – Updated: 2026-05-11 18:58
VLAI
Title
scsi: sd: Fix potential NULL pointer dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: sd: Fix potential NULL pointer dereference If sd_probe() sees an early error before sdkp->device is initialized, sd_zbc_release_disk() is called. This causes a NULL pointer dereference when sd_is_zoned() is called inside that function. Avoid this by removing the call to sd_zbc_release_disk() in sd_probe() error path. This change is safe and does not result in zone information memory leakage because the zone information for a zoned disk is allocated only when sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set, resulting in sd_disk_release() being called when needed to cleanup a disk zone information using sd_zbc_release_disk().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:41 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 89d9475610771b5e5fe1879075f0fc9ba6e3755f , < c1f0187025905e9981000d44a92e159468b561a8 (git)
Affected: 89d9475610771b5e5fe1879075f0fc9ba6e3755f , < 0fcb0b131cc90c8f523a293d84c58d0c7273c96f (git)
Affected: 89d9475610771b5e5fe1879075f0fc9ba6e3755f , < 78f8e96df06e2d04d82d4071c299b59d28744f47 (git)
Affected: 89d9475610771b5e5fe1879075f0fc9ba6e3755f , < 3733439593ad12f7b54ae35c273ea6f15d692de3 (git)
Affected: 89d9475610771b5e5fe1879075f0fc9ba6e3755f , < 05fbde3a77a4f1d62e4c4428f384288c1f1a0be5 (git)
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Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49376\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:41:58.424102Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:45:56.477Z\"}}], \"cna\": {\"title\": \"scsi: sd: Fix potential NULL pointer dereference\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\", \"lessThan\": \"c1f0187025905e9981000d44a92e159468b561a8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\", \"lessThan\": \"0fcb0b131cc90c8f523a293d84c58d0c7273c96f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\", \"lessThan\": \"78f8e96df06e2d04d82d4071c299b59d28744f47\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\", \"lessThan\": \"3733439593ad12f7b54ae35c273ea6f15d692de3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"89d9475610771b5e5fe1879075f0fc9ba6e3755f\", \"lessThan\": \"05fbde3a77a4f1d62e4c4428f384288c1f1a0be5\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/scsi/sd.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.122\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.47\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/scsi/sd.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c1f0187025905e9981000d44a92e159468b561a8\"}, {\"url\": \"https://git.kernel.org/stable/c/0fcb0b131cc90c8f523a293d84c58d0c7273c96f\"}, {\"url\": \"https://git.kernel.org/stable/c/78f8e96df06e2d04d82d4071c299b59d28744f47\"}, {\"url\": \"https://git.kernel.org/stable/c/3733439593ad12f7b54ae35c273ea6f15d692de3\"}, {\"url\": \"https://git.kernel.org/stable/c/05fbde3a77a4f1d62e4c4428f384288c1f1a0be5\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: sd: Fix potential NULL pointer dereference\\n\\nIf sd_probe() sees an early error before sdkp-\u003edevice is initialized,\\nsd_zbc_release_disk() is called. This causes a NULL pointer dereference\\nwhen sd_is_zoned() is called inside that function. Avoid this by removing\\nthe call to sd_zbc_release_disk() in sd_probe() error path.\\n\\nThis change is safe and does not result in zone information memory leakage\\nbecause the zone information for a zoned disk is allocated only when\\nsd_revalidate_disk() is called, at which point sdkp-\u003edisk_dev is fully set,\\nresulting in sd_disk_release() being called when needed to cleanup a disk\\nzone information using sd_zbc_release_disk().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.122\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.47\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.15\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.4\", \"versionStartIncluding\": \"4.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"4.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:58:29.817Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49376\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:58:29.817Z\", \"dateReserved\": \"2025-02-26T02:08:31.558Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:11:16.118Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.