CVE-2024-27043: media: edia: dvbdev: fix a use-after-free
First published: Wed May 01 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.11.4-1 6.11.5-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644
- https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e
- https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d
- https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712
- https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62
- https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5
- https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637b
- https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856
- https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086
- https://launchpad.net/bugs/cve/CVE-2024-27043
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://git.kernel.org/linus/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5
- https://security-tracker.debian.org/tracker/CVE-2024-27043
- https://www.cve.org/CVERecord?id=CVE-2024-27043
- https://git.kernel.org/linus/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5 (6.9-rc1)
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6820-1
- https://ubuntu.com/security/notices/USN-6821-1
- https://ubuntu.com/security/notices/USN-6821-2
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6828-1
- https://ubuntu.com/security/notices/USN-6820-2
- https://ubuntu.com/security/notices/USN-6821-3
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6821-4
- https://ubuntu.com/security/notices/USN-6871-1
- https://ubuntu.com/security/notices/USN-6878-1
- https://ubuntu.com/security/notices/USN-6892-1
- https://ubuntu.com/security/notices/USN-6896-1
- https://ubuntu.com/security/notices/USN-6896-2
- https://ubuntu.com/security/notices/USN-6896-3
- https://ubuntu.com/security/notices/USN-6896-4
- https://ubuntu.com/security/notices/USN-6896-5
- https://nvd.nist.gov/vuln/detail/CVE-2024-27043
- https://git.kernel.org/linus/b61901024776b25ce7b8edc31bb1757c7382a88e
- https://ubuntu.com/security/CVE-2024-27043
- agent/weakness
- agent/severity
- agent/title
- agent/type
- agent/remedy
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- collector/nvd-cve
- agent/references
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- package-manager/debian