CVE-2024-27043 (GCVE-0-2024-27043)
Vulnerability from cvelistv5 – Published: 2024-05-01 12:54 – Updated: 2026-05-11 20:09
VLAI
EPSS
VEX
Title
media: edia: dvbdev: fix a use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: edia: dvbdev: fix a use-after-free
In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed
in several error-handling paths. However, *pdvbdev is not set to NULL
after dvbdev's deallocation, causing use-after-frees in many places,
for example, in the following call chain:
budget_register
|-> dvb_dmxdev_init
|-> dvb_register_device
|-> dvb_dmxdev_release
|-> dvb_unregister_device
|-> dvb_remove_device
|-> dvb_device_put
|-> kref_put
When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in
dvb_register_device) could point to memory that had been freed in
dvb_register_device. Thereafter, this pointer is transferred to
kref_put and triggering a use-after-free.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
11 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b61901024776b25ce7b8edc31bb1757c7382a88e , < d0f5c28333822f9baa5280d813124920720fd856
(git)
Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < f20c3270f3ed5aa6919a87e4de9bf6c05fb57086 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 096237039d00c839f3e3a5fe6d001bf0db45b644 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 0d3fe80b6d175c220b3e252efc6c6777e700e98e (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 437a111f79a2f5b2a5f21e27fdec6f40c8768712 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 779e8db7efb22316c8581d6c229636d2f5694a62 (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 35674111a043b0482a9bc69da8850a83f465b07d (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < b7586e902128e4fb7bfbb661cb52e4215a65637b (git) Affected: b61901024776b25ce7b8edc31bb1757c7382a88e , < 8c64f4cdf4e6cc5682c52523713af8c39c94e6d5 (git) |
|
| Linux | Linux |
Affected:
2.6.21
Unaffected: 0 , < 2.6.21 (semver) Unaffected: 4.19.311 , ≤ 4.19.* (semver) Unaffected: 5.4.273 , ≤ 5.4.* (semver) Unaffected: 5.10.214 , ≤ 5.10.* (semver) Unaffected: 5.15.153 , ≤ 5.15.* (semver) Unaffected: 6.1.83 , ≤ 6.1.* (semver) Unaffected: 6.6.23 , ≤ 6.6.* (semver) Unaffected: 6.7.11 , ≤ 6.7.* (semver) Unaffected: 6.8.2 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
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However, *pdvbdev is not set to NULL\\nafter dvbdev\u0027s deallocation, causing use-after-frees in many places,\\nfor example, in the following call chain:\\n\\nbudget_register\\n |-\u003e dvb_dmxdev_init\\n |-\u003e dvb_register_device\\n |-\u003e dvb_dmxdev_release\\n |-\u003e dvb_unregister_device\\n |-\u003e dvb_remove_device\\n |-\u003e dvb_device_put\\n |-\u003e kref_put\\n\\nWhen calling dvb_unregister_device, dmxdev-\u003edvbdev (i.e. *pdvbdev in\\ndvb_register_device) could point to memory that had been freed in\\ndvb_register_device. Thereafter, this pointer is transferred to\\nkref_put and triggering a use-after-free.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: medios: edia: dvbdev: corregir un use-after-free En dvb_register_device, *pdvbdev se establece igual a dvbdev, que se libera en varias rutas de manejo de errores. Sin embargo, *pdvbdev no se establece en NULL despu\u00e9s de la desasignaci\u00f3n de dvbdev, lo que provoca use-after-free en muchos lugares, por ejemplo, en la siguiente cadena de llamadas: Budget_register |-\u0026gt; dvb_dmxdev_init |-\u0026gt; dvb_register_device |-\u0026gt; dvb_dmxdev_release |-\u0026gt; dvb_unregister_device | -\u0026gt; dvb_remove_device |-\u0026gt; dvb_device_put |-\u0026gt; kref_put Al llamar a dvb_unregister_device, dmxdev-\u0026gt;dvbdev (es decir, *pdvbdev en dvb_register_device) podr\u00eda apuntar a la memoria que se hab\u00eda liberado en dvb_register_device. 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"aggregate_severity": "Low",
"current_release_date": "2026-06-28T07:01:27+00:00",
"cve": "CVE-2024-27043",
"id": "CVE-2024-27043",
"initial_release_date": "2024-05-01T00:00:00+00:00",
"product_status:fixed": "150",
"product_status:known_affected": "14",
"product_status:known_not_affected": "136",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: media: edia: dvbdev: fix a use-after-free",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-27043.json",
"version": "3"
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"current_release_date": "2026-07-03T04:25:27Z",
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"id": "CVE-2024-27043",
"initial_release_date": "2024-05-04T02:23:10Z",
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"product_status:known_not_affected": "42",
"product_status:recommended": "1077",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-27043",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-27043.json",
"version": "110"
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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