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CVE-2022-49148 (GCVE-0-2022-49148)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:54
VLAI
Title
watch_queue: Free the page array when watch_queue is dismantled
Summary
In the Linux kernel, the following vulnerability has been resolved: watch_queue: Free the page array when watch_queue is dismantled Commit 7ea1a0124b6d ("watch_queue: Free the alloc bitmap when the watch_queue is torn down") took care of the bitmap, but not the page array. BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32): comm "syz-executor335", pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
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 19:47 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c73be61cede5882f9605a852414db559c0ebedfd , < 7169f60110915c8b53bffd43741fa020a75eb87a (git)
Affected: c73be61cede5882f9605a852414db559c0ebedfd , < 4913daecd04addb41bc96a9175a885e1c19862a8 (git)
Affected: c73be61cede5882f9605a852414db559c0ebedfd , < 3963a5d1ff75585bddf0c3a918566a6be09d7520 (git)
Affected: c73be61cede5882f9605a852414db559c0ebedfd , < 375cd2536494cfbcdda84ae8b3e35bf19d0250b9 (git)
Affected: c73be61cede5882f9605a852414db559c0ebedfd , < b490207017ba237d97b735b2aa66dc241ccd18f5 (git)
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Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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ERROR: p\u00e9rdida de memoria objeto no referenciado 0xffff88810d9bc140 (tama\u00f1o 32): comm \\\"syz-executor335\\\", pid 3603, jiffies 4294946994 (edad 12.840s) volcado hexadecimal (primeros 32 bytes): 40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00 @.@............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: kmalloc_array include/linux/slab.h:621 [en l\u00ednea] kcalloc include/linux/slab.h:652 [en l\u00ednea] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:874 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:860 [en l\u00ednea] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [en 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    "redhat_vex": {
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    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:31:00.333Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwatch_queue: Free the page array when watch_queue is dismantled\\n\\nCommit 7ea1a0124b6d (\\\"watch_queue: Free the alloc bitmap when the\\nwatch_queue is torn down\\\") took care of the bitmap, but not the page\\narray.\\n\\n  BUG: memory leak\\n  unreferenced object 0xffff88810d9bc140 (size 32):\\n  comm \\\"syz-executor335\\\", pid 3603, jiffies 4294946994 (age 12.840s)\\n  hex dump (first 32 bytes):\\n    40 a7 40 04 00 ea ff ff 00 00 00 00 00 00 00 00  @.@.............\\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n  backtrace:\\n     kmalloc_array include/linux/slab.h:621 [inline]\\n     kcalloc include/linux/slab.h:652 [inline]\\n     watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251\\n     pipe_ioctl+0x82/0x140 fs/pipe.c:632\\n     vfs_ioctl fs/ioctl.c:51 [inline]\\n     __do_sys_ioctl fs/ioctl.c:874 [inline]\\n     __se_sys_ioctl fs/ioctl.c:860 [inline]\\n     __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860\\n     do_syscall_x64 arch/x86/entry/common.c:50 [inline]\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"kernel/watch_queue.c\"], \"versions\": [{\"version\": \"c73be61cede5882f9605a852414db559c0ebedfd\", \"lessThan\": \"7169f60110915c8b53bffd43741fa020a75eb87a\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c73be61cede5882f9605a852414db559c0ebedfd\", \"lessThan\": \"4913daecd04addb41bc96a9175a885e1c19862a8\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c73be61cede5882f9605a852414db559c0ebedfd\", \"lessThan\": \"3963a5d1ff75585bddf0c3a918566a6be09d7520\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c73be61cede5882f9605a852414db559c0ebedfd\", \"lessThan\": \"375cd2536494cfbcdda84ae8b3e35bf19d0250b9\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c73be61cede5882f9605a852414db559c0ebedfd\", \"lessThan\": \"b490207017ba237d97b735b2aa66dc241ccd18f5\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"kernel/watch_queue.c\"], \"versions\": [{\"version\": \"5.8\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"5.8\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.10.110\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.15.33\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.16.19\", \"lessThanOrEqual\": \"5.16.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.17.2\", \"lessThanOrEqual\": \"5.17.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.18\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.8\", \"versionEndExcluding\": \"5.10.110\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.8\", \"versionEndExcluding\": \"5.15.33\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.8\", \"versionEndExcluding\": \"5.16.19\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.8\", \"versionEndExcluding\": \"5.17.2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.8\", \"versionEndExcluding\": \"5.18\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/7169f60110915c8b53bffd43741fa020a75eb87a\"}, {\"url\": \"https://git.kernel.org/stable/c/4913daecd04addb41bc96a9175a885e1c19862a8\"}, {\"url\": \"https://git.kernel.org/stable/c/3963a5d1ff75585bddf0c3a918566a6be09d7520\"}, {\"url\": \"https://git.kernel.org/stable/c/375cd2536494cfbcdda84ae8b3e35bf19d0250b9\"}, {\"url\": \"https://git.kernel.org/stable/c/b490207017ba237d97b735b2aa66dc241ccd18f5\"}], \"title\": \"watch_queue: Free the page array when watch_queue is dismantled\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"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-2022-49148\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:47:50.624778Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2025-10-01T16:07:41.819Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49148\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-02-26T01:49:39.273Z\", \"datePublished\": \"2025-02-26T01:55:15.872Z\", \"dateUpdated\": \"2025-05-04T08:31:00.333Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.