CVE-2024-27043

Advisory lineage Upstream: 0 Downstream: 60
Analyzed
Published: 01 May 2024, 12:54
Last modified:11 May 2026, 20:09

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 May 2024, 12:54
Published
Vulnerability first disclosed
11 May 2026, 20:09
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < d0f5c28333822f9baa5280d813124920720fd856 | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < f20c3270f3ed5aa6919a87e4de9bf6c05fb57086 | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 096237039d00c839f3e3a5fe6d001bf0db45b644 | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 0d3fe80b6d175c220b3e252efc6c6777e700e98e | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 437a111f79a2f5b2a5f21e27fdec6f40c8768712 | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 779e8db7efb22316c8581d6c229636d2f5694a62 | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 35674111a043b0482a9bc69da8850a83f465b07d | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < b7586e902128e4fb7bfbb661cb52e4215a65637b | ≥ b61901024776b25ce7b8edc31bb1757c7382a88e, < 8c64f4cdf4e6cc5682c52523713af8c39c94e6d5 | 2.6.21

  • linux•linux_kernel

    ≥ 2.6.21, < 4.19.311 | ≥ 4.20, < 5.4.273 | ≥ 5.5, < 5.10.214 | ≥ 5.11, < 5.15.153 | ≥ 5.16, < 6.1.83 | ≥ 6.2, < 6.6.23 | ≥ 6.7, < 6.7.11 | ≥ 6.8, < 6.8.2

References (11)