CVE-2023-52847

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2024-05-21. NVD baseline CVSS 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

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

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

May 21, 2024

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbda
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2b
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9a
generic

media: bttv: fix use after free error due to btv->timeout timer - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9

Vendor Advisories for CVE-2023-52847(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:4.18.0-553.16.1.rt7.357.el8_102024-08-08redhat
redhatkernel-0:4.18.0-553.16.1.el8_102024-08-08redhat
linuxKernel @ 4.19.299—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (35 versions)5.10.205-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.55-1~bpo11+1 (11 versions)6.1.64-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.6.8-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.6.8-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 153 total refreshes for this CVE.

  1. 2026-09-07 15:59 UTCEPSS rescore
  2. 2026-09-07 06:48 UTCOSV refresh
  3. 2026-09-06 13:46 UTCEPSS rescore
  4. 2026-09-05 15:26 UTCEPSS rescore
  5. 2026-09-04 13:58 UTCEPSS rescore
  6. 2026-09-04 05:04 UTCEPSS rescore
  7. 2026-09-02 14:10 UTCEPSS rescore
  8. 2026-09-01 13:52 UTCEPSS rescore
  9. 2026-09-01 04:36 UTCEPSS rescore
  10. 2026-08-30 19:15 UTCEPSS rescore
  11. 2026-08-30 01:20 UTCEPSS rescore
  12. 2026-08-28 21:39 UTCEPSS rescore
  13. 2026-08-27 14:23 UTCEPSS rescore
  14. 2026-08-26 14:44 UTCEPSS rescore
  15. 2026-08-25 13:47 UTCEPSS rescore
  16. 2026-08-23 00:17 UTCEPSS rescore
  17. 2026-08-23 00:17 UTCEPSS rescore
  18. 2026-08-21 23:47 UTCEPSS rescore
  19. 2026-08-20 22:53 UTCEPSS rescore
  20. 2026-08-20 16:31 UTCOSV refresh
  21. 2026-08-19 17:02 UTCEPSS rescore
  22. 2026-08-18 13:46 UTCEPSS rescore
  23. 2026-08-16 14:54 UTCEPSS rescore
  24. 2026-08-16 02:12 UTCEPSS rescore
  25. 2026-08-15 01:28 UTCEPSS rescore
Show 75 more
  1. 2026-08-13 21:58 UTCEPSS rescore
  2. 2026-08-12 13:49 UTCEPSS rescore
  3. 2026-08-11 13:40 UTCEPSS rescore
  4. 2026-08-10 23:58 UTCEPSS rescore
  5. 2026-08-09 13:44 UTCEPSS rescore
  6. 2026-08-08 16:35 UTCEPSS rescore
  7. 2026-08-07 16:25 UTCEPSS rescore
  8. 2026-08-06 13:45 UTCEPSS rescore
  9. 2026-08-05 19:15 UTCEPSS rescore
  10. 2026-08-05 19:15 UTCEPSS rescore
  11. 2026-08-05 10:24 UTCEG score recompute
  12. 2026-08-05 10:24 UTCVendor advisory
  13. 2026-08-05 10:24 UTCGHSA enrichment
  14. 2026-08-04 12:10 UTCEG score recompute
  15. 2026-08-04 12:10 UTCVendor advisory
  16. 2026-08-04 12:10 UTCGHSA enrichment
  17. 2026-08-04 10:36 UTCEPSS rescore
  18. 2026-08-04 09:50 UTCEG score recompute
  19. 2026-08-04 09:50 UTCVendor advisory
  20. 2026-08-04 09:50 UTCGHSA enrichment
  21. 2026-08-03 10:34 UTCEPSS rescore
  22. 2026-08-02 02:25 UTCEPSS rescore
  23. 2026-08-02 02:25 UTCEPSS rescore
  24. 2026-08-01 04:14 UTCEPSS rescore
  25. 2026-08-01 01:42 UTCOSV refresh
  26. 2026-07-30 16:26 UTCEPSS rescore
  27. 2026-07-30 01:29 UTCEPSS rescore
  28. 2026-07-28 15:34 UTCEPSS rescore
  29. 2026-07-28 15:34 UTCEPSS rescore
  30. 2026-07-26 14:53 UTCEPSS rescore
  31. 2026-07-25 14:16 UTCEPSS rescore
  32. 2026-07-24 14:16 UTCEPSS rescore
  33. 2026-07-23 14:16 UTCEPSS rescore
  34. 2026-07-23 02:29 UTCEG score recompute
  35. 2026-07-22 23:16 UTCEG score recompute
  36. 2026-07-22 14:07 UTCEPSS rescore
  37. 2026-07-22 14:07 UTCEPSS rescore
  38. 2026-07-21 15:23 UTCEPSS rescore
  39. 2026-07-20 17:06 UTCEPSS rescore
  40. 2026-07-19 14:30 UTCEPSS rescore
  41. 2026-07-19 14:29 UTCEPSS rescore
  42. 2026-07-19 02:27 UTCEPSS rescore
  43. 2026-07-19 02:27 UTCEPSS rescore
  44. 2026-07-18 10:03 UTCEPSS rescore
  45. 2026-07-18 10:03 UTCEPSS rescore
  46. 2026-07-16 17:01 UTCEPSS rescore
  47. 2026-07-15 16:56 UTCEPSS rescore
  48. 2026-07-15 01:59 UTCEPSS rescore
  49. 2026-07-15 01:59 UTCEPSS rescore
  50. 2026-07-14 09:10 UTCOSV refresh
  51. 2026-07-13 22:28 UTCEPSS rescore
  52. 2026-07-13 22:28 UTCEPSS rescore
  53. 2026-07-13 06:11 UTCEPSS rescore
  54. 2026-07-12 05:45 UTCEPSS rescore
  55. 2026-07-12 05:45 UTCEPSS rescore
  56. 2026-07-11 08:26 UTCEPSS rescore
  57. 2026-07-09 19:08 UTCEPSS rescore
  58. 2026-07-08 15:13 UTCEPSS rescore
  59. 2026-07-07 13:45 UTCEPSS rescore
  60. 2026-07-07 13:44 UTCEPSS rescore
  61. 2026-07-06 16:26 UTCEPSS rescore
  62. 2026-07-06 16:26 UTCEPSS rescore
  63. 2026-07-06 02:22 UTCEPSS rescore
  64. 2026-07-06 02:22 UTCEPSS rescore
  65. 2026-07-05 02:29 UTCEPSS rescore
  66. 2026-07-04 06:29 UTCEPSS rescore
  67. 2026-07-01 15:05 UTCEPSS rescore
  68. 2026-06-30 23:21 UTCEPSS rescore
  69. 2026-06-30 23:21 UTCEPSS rescore
  70. 2026-06-29 14:05 UTCEPSS rescore
  71. 2026-06-28 14:06 UTCEPSS rescore
  72. 2026-06-28 14:06 UTCEPSS rescore
  73. 2026-06-28 04:55 UTCEPSS rescore
  74. 2026-06-27 03:07 UTCEPSS rescore
  75. 2026-06-26 10:07 UTCOSV refresh

Frequently asked(5)

What is CVE-2023-52847?
CVE-2023-52847 is a high vulnerability published on May 21, 2024. 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 bttvirqtimeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove…
When was CVE-2023-52847 disclosed?
CVE-2023-52847 was first published in the National Vulnerability Database on May 21, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-52847 actively exploited?
CVE-2023-52847 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.7% of all scored CVEs.
What is the CVSS score of CVE-2023-52847?
CVE-2023-52847 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2023-52847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-52847, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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