CVE-2024-38385 (GCVE-0-2024-38385)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:22 – Updated: 2026-05-11 20:18
VLAI
Title
genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()
Summary
In the Linux kernel, the following vulnerability has been resolved: genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after() irq_find_at_or_after() dereferences the interrupt descriptor which is returned by mt_find() while neither holding sparse_irq_lock nor RCU read lock, which means the descriptor can be freed between mt_find() and the dereference: CPU0 CPU1 desc = mt_find() delayed_free_desc(desc) irq_desc_get_irq(desc) The use-after-free is reported by KASAN: Call trace: irq_get_next_irq+0x58/0x84 show_stat+0x638/0x824 seq_read_iter+0x158/0x4ec proc_reg_read_iter+0x94/0x12c vfs_read+0x1e0/0x2c8 Freed by task 4471: slab_free_freelist_hook+0x174/0x1e0 __kmem_cache_free+0xa4/0x1dc kfree+0x64/0x128 irq_kobj_release+0x28/0x3c kobject_put+0xcc/0x1e0 delayed_free_desc+0x14/0x2c rcu_do_batch+0x214/0x720 Guard the access with a RCU read lock section.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 721255b9826bd11c7a38b585905fc2dd0fb94e52 , < 1c7891812d85500ae2ca4051fa5683fcf29930d8 (git)
Affected: 721255b9826bd11c7a38b585905fc2dd0fb94e52 , < d084aa022f84319f8079e30882cbcbc026af9f21 (git)
Affected: 721255b9826bd11c7a38b585905fc2dd0fb94e52 , < b84a8aba806261d2f759ccedf4a2a6a80a5e55ba (git)
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Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.34 , ≤ 6.6.* (semver)
Unaffected: 6.9.5 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38385.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1c7891812d85500ae2ca4051fa5683fcf29930d8\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d084aa022f84319f8079e30882cbcbc026af9f21\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b84a8aba806261d2f759ccedf4a2a6a80a5e55ba\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:04:25.138Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-38385\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:08:17.872806Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:25.326Z\"}}], \"cna\": {\"title\": \"genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"721255b9826bd11c7a38b585905fc2dd0fb94e52\", \"lessThan\": \"1c7891812d85500ae2ca4051fa5683fcf29930d8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"721255b9826bd11c7a38b585905fc2dd0fb94e52\", \"lessThan\": \"d084aa022f84319f8079e30882cbcbc026af9f21\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"721255b9826bd11c7a38b585905fc2dd0fb94e52\", \"lessThan\": \"b84a8aba806261d2f759ccedf4a2a6a80a5e55ba\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/irq/irqdesc.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.5\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.5\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.34\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/irq/irqdesc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1c7891812d85500ae2ca4051fa5683fcf29930d8\"}, {\"url\": \"https://git.kernel.org/stable/c/d084aa022f84319f8079e30882cbcbc026af9f21\"}, {\"url\": \"https://git.kernel.org/stable/c/b84a8aba806261d2f759ccedf4a2a6a80a5e55ba\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngenirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()\\n\\nirq_find_at_or_after() dereferences the interrupt descriptor which is\\nreturned by mt_find() while neither holding sparse_irq_lock nor RCU read\\nlock, which means the descriptor can be freed between mt_find() and the\\ndereference:\\n\\n    CPU0                            CPU1\\n    desc = mt_find()\\n                                    delayed_free_desc(desc)\\n    irq_desc_get_irq(desc)\\n\\nThe use-after-free is reported by KASAN:\\n\\n    Call trace:\\n     irq_get_next_irq+0x58/0x84\\n     show_stat+0x638/0x824\\n     seq_read_iter+0x158/0x4ec\\n     proc_reg_read_iter+0x94/0x12c\\n     vfs_read+0x1e0/0x2c8\\n\\n    Freed by task 4471:\\n     slab_free_freelist_hook+0x174/0x1e0\\n     __kmem_cache_free+0xa4/0x1dc\\n     kfree+0x64/0x128\\n     irq_kobj_release+0x28/0x3c\\n     kobject_put+0xcc/0x1e0\\n     delayed_free_desc+0x14/0x2c\\n     rcu_do_batch+0x214/0x720\\n\\nGuard the access with a RCU read lock section.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.34\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.5\", \"versionStartIncluding\": \"6.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"6.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:18:33.139Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-38385\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:18:33.139Z\", \"dateReserved\": \"2024-06-24T13:54:11.033Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-25T14:22:37.560Z\", \"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

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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.