CVE-2023-52847 (GCVE-0-2023-52847)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2025-05-04 07:44
VLAI?
Title
media: bttv: fix use after free error due to btv->timeout timer
Summary
In the Linux kernel, the following vulnerability has been resolved: media: bttv: fix use after free error due to btv->timeout timer There may be some a race condition between timer function bttv_irq_timeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove function. When it hit kfree btv, the function might still be invoked, which will cause use after free bug. This bug is found by static analysis, it may be false positive. Fix it by adding del_timer_sync invoking to the remove function. cpu0 cpu1 bttv_probe ->timer_setup ->bttv_set_dma ->mod_timer; bttv_remove ->kfree(btv); ->bttv_irq_timeout ->USE btv
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < b35fdade92c5058a5e727e233fe263b828de2c9a (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < 2f3d9198cdae1cb079ec8652f4defacd481eab2b (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < 51c94256a83fe4e17406c66ff3e1ad7d242d8574 (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < 20568d06f6069cb835e05eed432edf962645d226 (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < 1871014d6ef4812ad11ef7d838d73ce09d632267 (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < 847599fffa528b2cdec4e21b6bf7586dad982132 (git)
Affected: 162e6376ac58440beb6a2d2ee294f5d88ea58dd1 , < bd5b50b329e850d467e7bcc07b2b6bde3752fbda (git)
Create a notification for this product.
    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.299 , ≤ 4.19.* (semver)
Unaffected: 5.4.261 , ≤ 5.4.* (semver)
Unaffected: 5.10.201 , ≤ 5.10.* (semver)
Unaffected: 5.15.139 , ≤ 5.15.* (semver)
Unaffected: 6.1.63 , ≤ 6.1.* (semver)
Unaffected: 6.5.12 , ≤ 6.5.* (semver)
Unaffected: 6.6.2 , ≤ 6.6.* (semver)
Unaffected: 6.7 , ≤ * (original_commit_for_fix)
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The timer is setup in\\nprobe and there is no timer_delete operation in remove\\nfunction. When it hit kfree btv, the function might still be\\ninvoked, which will cause use after free bug.\\n\\nThis bug is found by static analysis, it may be false positive.\\n\\nFix it by adding del_timer_sync invoking to the remove function.\\n\\ncpu0                cpu1\\n                  bttv_probe\\n                    -\u003etimer_setup\\n                      -\u003ebttv_set_dma\\n                        -\u003emod_timer;\\nbttv_remove\\n  -\u003ekfree(btv);\\n                  -\u003ebttv_irq_timeout\\n                    -\u003eUSE btv\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.299\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.261\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.201\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.139\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.63\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.12\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.2\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7\", \"versionStartIncluding\": \"4.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:44:14.058Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52847\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:44:14.058Z\", \"dateReserved\": \"2024-05-21T15:19:24.255Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:31:44.513Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

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.