CVE-2024-27043 Affecting kernel-debug package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUG-6791288
- published 9 May 2024
- disclosed 1 May 2024
Introduced: 1 May 2024
CVE-2024-27043 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-debug.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-27043
- 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://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html