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CVE-2022-49685 (GCVE-0-2022-49685)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:04
VLAI
Title
iio: trigger: sysfs: fix use-after-free on remove
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: trigger: sysfs: fix use-after-free on remove Ensure that the irq_work has completed before the trigger is freed. ================================================================== BUG: KASAN: use-after-free in irq_work_run_list Read of size 8 at addr 0000000064702248 by task python3/25 Call Trace: irq_work_run_list irq_work_tick update_process_times tick_sched_handle tick_sched_timer __hrtimer_run_queues hrtimer_interrupt Allocated by task 25: kmem_cache_alloc_trace iio_sysfs_trig_add dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write Freed by task 25: kfree iio_sysfs_trig_remove dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write ==================================================================
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:15 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < fd5d8fb298a2866c337da635c79d63c3afabcaf7 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < 31ff3309b47d98313c61b8301bf595820cc3cc33 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < 5e39397d60dacc7f5d81d442c1c958eaaaf31128 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < b07a30a774b3c3e584a68dc91779c68ea2da4813 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < 4687c3f955240ca2a576bdc3f742d4d915b6272d (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < 4ef1e521be610b720daeb7cf899fedc7db0274c4 (git)
Affected: f38bc926d022ebd67baad6ac7fc22c95fbc6238c , < 78601726d4a59a291acc5a52da1d3a0a6831e4e8 (git)
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Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.9.321 , ≤ 4.9.* (semver)
Unaffected: 4.14.286 , ≤ 4.14.* (semver)
Unaffected: 4.19.250 , ≤ 4.19.* (semver)
Unaffected: 5.4.202 , ≤ 5.4.* (semver)
Unaffected: 5.10.127 , ≤ 5.10.* (semver)
Unaffected: 5.15.51 , ≤ 5.15.* (semver)
Unaffected: 5.18.8 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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new_sync_write\\n  vfs_write\\n  ksys_write\\n  sys_write\\n\\n Freed by task 25:\\n  kfree\\n  iio_sysfs_trig_remove\\n  dev_attr_store\\n  sysfs_kf_write\\n  kernfs_fop_write_iter\\n  new_sync_write\\n  vfs_write\\n  ksys_write\\n  sys_write\\n\\n ==================================================================\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iio: trigger: sysfs: fix use-after-free on remove Aseg\u00farese de que irq_work se haya completado antes de que se libere el disparador.================================================================== BUG: KASAN: use-after-free in irq_work_run_list Read of size 8 at addr 0000000064702248 by task python3/25 Call Trace: irq_work_run_list irq_work_tick update_process_times tick_sched_handle tick_sched_timer __hrtimer_run_queues hrtimer_interrupt Allocated by task 25: kmem_cache_alloc_trace iio_sysfs_trig_add dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write Freed by task 25: kfree iio_sysfs_trig_remove dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write ================================================================== 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Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.7\",\"versionEndExcluding\":\"4.9.321\",\"matchCriteriaId\":\"59A5EE02-2844-49CB-93F4-511FFBACF9CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.286\",\"matchCriteriaId\":\"1425627F-375A-4BB1-9AB9-5EE617FF8D45\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.250\",\"matchCriteriaId\":\"022AD3A2-7FC8-41A3-9709-72100A894A55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.202\",\"matchCriteriaId\":\"F90471AA-9F14-4DC3-9688-99E9F537D3F1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.127\",\"matchCriteriaId\":\"758A1E17-EBCF-401B-83C7-B682D38D61BE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.51\",\"matchCriteriaId\":\"B43F7696-8D52-482D-9080-84279B0CB38C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.8\",\"matchCriteriaId\":\"0172D3FA-DDEB-482A-A270-4A1495A8798C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"A8C30C2D-F82D-4D37-AB48-D76ABFBD5377\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"BF8547FC-C849-4F1B-804B-A93AE2F04A92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F3068028-F453-4A1C-B80F-3F5609ACEF60\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/31ff3309b47d98313c61b8301bf595820cc3cc33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4687c3f955240ca2a576bdc3f742d4d915b6272d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4ef1e521be610b720daeb7cf899fedc7db0274c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5e39397d60dacc7f5d81d442c1c958eaaaf31128\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78601726d4a59a291acc5a52da1d3a0a6831e4e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b07a30a774b3c3e584a68dc91779c68ea2da4813\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fd5d8fb298a2866c337da635c79d63c3afabcaf7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-29T20:20:12+00:00",
      "cve": "CVE-2022-49685",
      "id": "CVE-2022-49685",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iio: trigger: sysfs: fix use-after-free on remove",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49685.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T00:16:37Z",
      "cve": "CVE-2022-49685",
      "id": "CVE-2022-49685",
      "initial_release_date": "2025-02-27T03:02:53Z",
      "product_status:known_affected": "433",
      "product_status:known_not_affected": "305",
      "product_status:recommended": "293",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49685",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49685.json",
      "version": "53"
    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-02-26T02:24:12.143Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niio: trigger: sysfs: fix use-after-free on remove\\n\\nEnsure that the irq_work has completed before the trigger is freed.\\n\\n ==================================================================\\n BUG: KASAN: use-after-free in irq_work_run_list\\n Read of size 8 at addr 0000000064702248 by task python3/25\\n\\n Call Trace:\\n  irq_work_run_list\\n  irq_work_tick\\n  update_process_times\\n  tick_sched_handle\\n  tick_sched_timer\\n  __hrtimer_run_queues\\n  hrtimer_interrupt\\n\\n Allocated by task 25:\\n  kmem_cache_alloc_trace\\n  iio_sysfs_trig_add\\n  dev_attr_store\\n  sysfs_kf_write\\n  kernfs_fop_write_iter\\n  new_sync_write\\n  vfs_write\\n  ksys_write\\n  sys_write\\n\\n Freed by task 25:\\n  kfree\\n  iio_sysfs_trig_remove\\n  dev_attr_store\\n  sysfs_kf_write\\n  kernfs_fop_write_iter\\n  new_sync_write\\n  vfs_write\\n  ksys_write\\n  sys_write\\n\\n ==================================================================\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/iio/trigger/iio-trig-sysfs.c\"], \"versions\": [{\"version\": \"f38bc926d022ebd67baad6ac7fc22c95fbc6238c\", \"lessThan\": \"d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"f38bc926d022ebd67baad6ac7fc22c95fbc6238c\", \"lessThan\": \"fd5d8fb298a2866c337da635c79d63c3afabcaf7\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"f38bc926d022ebd67baad6ac7fc22c95fbc6238c\", \"lessThan\": \"31ff3309b47d98313c61b8301bf595820cc3cc33\", \"status\": 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\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"drivers/iio/trigger/iio-trig-sysfs.c\"], \"versions\": [{\"version\": \"3.7\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"3.7\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.9.321\", \"lessThanOrEqual\": \"4.9.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.14.286\", \"lessThanOrEqual\": \"4.14.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"4.19.250\", \"lessThanOrEqual\": \"4.19.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.4.202\", \"lessThanOrEqual\": \"5.4.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.10.127\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.15.51\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.18.8\", \"lessThanOrEqual\": \"5.18.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.19\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2\"}, {\"url\": \"https://git.kernel.org/stable/c/fd5d8fb298a2866c337da635c79d63c3afabcaf7\"}, {\"url\": \"https://git.kernel.org/stable/c/31ff3309b47d98313c61b8301bf595820cc3cc33\"}, {\"url\": \"https://git.kernel.org/stable/c/5e39397d60dacc7f5d81d442c1c958eaaaf31128\"}, {\"url\": \"https://git.kernel.org/stable/c/b07a30a774b3c3e584a68dc91779c68ea2da4813\"}, {\"url\": \"https://git.kernel.org/stable/c/4687c3f955240ca2a576bdc3f742d4d915b6272d\"}, {\"url\": \"https://git.kernel.org/stable/c/4ef1e521be610b720daeb7cf899fedc7db0274c4\"}, {\"url\": \"https://git.kernel.org/stable/c/78601726d4a59a291acc5a52da1d3a0a6831e4e8\"}], \"title\": \"iio: trigger: sysfs: fix use-after-free on remove\", \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49685\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:15:09.914625Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:15:11.167Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49685\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-02-26T02:21:30.441Z\", \"datePublished\": \"2025-02-26T02:24:12.143Z\", \"dateUpdated\": \"2025-02-27T18:22:31.102Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.