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CVE-2023-53231 (GCVE-0-2023-53231)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:22 – Updated: 2026-05-11 19:40
VLAI
Title
erofs: Fix detection of atomic context
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs: Fix detection of atomic context Current check for atomic context is not sufficient as z_erofs_decompressqueue_endio can be called under rcu lock from blk_mq_flush_plug_list(). See the stacktrace [1] In such case we should hand off the decompression work for async processing rather than trying to do sync decompression in current context. Patch fixes the detection by checking for rcu_read_lock_any_held() and while at it use more appropriate !in_task() check than in_atomic(). Background: Historically erofs would always schedule a kworker for decompression which would incur the scheduling cost regardless of the context. But z_erofs_decompressqueue_endio() may not always be in atomic context and we could actually benefit from doing the decompression in z_erofs_decompressqueue_endio() if we are in thread context, for example when running with dm-verity. This optimization was later added in patch [2] which has shown improvement in performance benchmarks. ============================================== [1] Problem stacktrace [name:core&]BUG: sleeping function called from invalid context at kernel/locking/mutex.c:291 [name:core&]in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1615, name: CpuMonitorServi [name:core&]preempt_count: 0, expected: 0 [name:core&]RCU nest depth: 1, expected: 0 CPU: 7 PID: 1615 Comm: CpuMonitorServi Tainted: G S W OE 6.1.25-android14-5-maybe-dirty-mainline #1 Hardware name: MT6897 (DT) Call trace: dump_backtrace+0x108/0x15c show_stack+0x20/0x30 dump_stack_lvl+0x6c/0x8c dump_stack+0x20/0x48 __might_resched+0x1fc/0x308 __might_sleep+0x50/0x88 mutex_lock+0x2c/0x110 z_erofs_decompress_queue+0x11c/0xc10 z_erofs_decompress_kickoff+0x110/0x1a4 z_erofs_decompressqueue_endio+0x154/0x180 bio_endio+0x1b0/0x1d8 __dm_io_complete+0x22c/0x280 clone_endio+0xe4/0x280 bio_endio+0x1b0/0x1d8 blk_update_request+0x138/0x3a4 blk_mq_plug_issue_direct+0xd4/0x19c blk_mq_flush_plug_list+0x2b0/0x354 __blk_flush_plug+0x110/0x160 blk_finish_plug+0x30/0x4c read_pages+0x2fc/0x370 page_cache_ra_unbounded+0xa4/0x23c page_cache_ra_order+0x290/0x320 do_sync_mmap_readahead+0x108/0x2c0 filemap_fault+0x19c/0x52c __do_fault+0xc4/0x114 handle_mm_fault+0x5b4/0x1168 do_page_fault+0x338/0x4b4 do_translation_fault+0x40/0x60 do_mem_abort+0x60/0xc8 el0_da+0x4c/0xe0 el0t_64_sync_handler+0xd4/0xfc el0t_64_sync+0x1a0/0x1a4 [2] Link: https://lore.kernel.org/all/20210317035448.13921-1-huangjianan@oppo.com/
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 2026-01-14 17:55 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: aea1286dcbbb87cf33595c2ac8b153c29a4611cb , < 597fb60c75132719687e173b75cab8f6eb1ca657 (git)
Affected: aea1286dcbbb87cf33595c2ac8b153c29a4611cb , < 12d0a24afd9ea58e581ea64d64e066f2027b28d9 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 6.4.7 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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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-2023-53231\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T17:55:25.324929Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T17:55:21.361Z\"}}], \"cna\": {\"title\": \"erofs: Fix detection of atomic context\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"aea1286dcbbb87cf33595c2ac8b153c29a4611cb\", \"lessThan\": \"597fb60c75132719687e173b75cab8f6eb1ca657\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"aea1286dcbbb87cf33595c2ac8b153c29a4611cb\", \"lessThan\": \"12d0a24afd9ea58e581ea64d64e066f2027b28d9\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/erofs/zdata.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.4.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.4.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/erofs/zdata.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/597fb60c75132719687e173b75cab8f6eb1ca657\"}, {\"url\": \"https://git.kernel.org/stable/c/12d0a24afd9ea58e581ea64d64e066f2027b28d9\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nerofs: Fix detection of atomic context\\n\\nCurrent check for atomic context is not sufficient as\\nz_erofs_decompressqueue_endio can be called under rcu lock\\nfrom blk_mq_flush_plug_list(). See the stacktrace [1]\\n\\nIn such case we should hand off the decompression work for async\\nprocessing rather than trying to do sync decompression in current\\ncontext. Patch fixes the detection by checking for\\nrcu_read_lock_any_held() and while at it use more appropriate\\n!in_task() check than in_atomic().\\n\\nBackground: Historically erofs would always schedule a kworker for\\ndecompression which would incur the scheduling cost regardless of\\nthe context. But z_erofs_decompressqueue_endio() may not always\\nbe in atomic context and we could actually benefit from doing the\\ndecompression in z_erofs_decompressqueue_endio() if we are in\\nthread context, for example when running with dm-verity.\\nThis optimization was later added in patch [2] which has shown\\nimprovement in performance benchmarks.\\n\\n==============================================\\n[1] Problem stacktrace\\n[name:core\u0026]BUG: sleeping function called from invalid context at kernel/locking/mutex.c:291\\n[name:core\u0026]in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1615, name: CpuMonitorServi\\n[name:core\u0026]preempt_count: 0, expected: 0\\n[name:core\u0026]RCU nest depth: 1, expected: 0\\nCPU: 7 PID: 1615 Comm: CpuMonitorServi Tainted: G S      W  OE      6.1.25-android14-5-maybe-dirty-mainline #1\\nHardware name: MT6897 (DT)\\nCall trace:\\n dump_backtrace+0x108/0x15c\\n show_stack+0x20/0x30\\n dump_stack_lvl+0x6c/0x8c\\n dump_stack+0x20/0x48\\n __might_resched+0x1fc/0x308\\n __might_sleep+0x50/0x88\\n mutex_lock+0x2c/0x110\\n z_erofs_decompress_queue+0x11c/0xc10\\n z_erofs_decompress_kickoff+0x110/0x1a4\\n z_erofs_decompressqueue_endio+0x154/0x180\\n bio_endio+0x1b0/0x1d8\\n __dm_io_complete+0x22c/0x280\\n clone_endio+0xe4/0x280\\n bio_endio+0x1b0/0x1d8\\n blk_update_request+0x138/0x3a4\\n blk_mq_plug_issue_direct+0xd4/0x19c\\n blk_mq_flush_plug_list+0x2b0/0x354\\n __blk_flush_plug+0x110/0x160\\n blk_finish_plug+0x30/0x4c\\n read_pages+0x2fc/0x370\\n page_cache_ra_unbounded+0xa4/0x23c\\n page_cache_ra_order+0x290/0x320\\n do_sync_mmap_readahead+0x108/0x2c0\\n filemap_fault+0x19c/0x52c\\n __do_fault+0xc4/0x114\\n handle_mm_fault+0x5b4/0x1168\\n do_page_fault+0x338/0x4b4\\n do_translation_fault+0x40/0x60\\n do_mem_abort+0x60/0xc8\\n el0_da+0x4c/0xe0\\n el0t_64_sync_handler+0xd4/0xfc\\n el0t_64_sync+0x1a0/0x1a4\\n\\n[2] Link: https://lore.kernel.org/all/20210317035448.13921-1-huangjianan@oppo.com/\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.7\", \"versionStartIncluding\": \"4.19\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5\", \"versionStartIncluding\": \"4.19\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-16T08:02:24.954Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53231\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:02:49.372Z\", \"dateReserved\": \"2025-09-15T14:19:21.847Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-15T14:22:03.599Z\", \"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.

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  • 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.
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  • 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.


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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.