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 |
|---|---|---|
| redhat/kernel | <4.19.311 | 4.19.311 |
| redhat/kernel | <5.4.273 | 5.4.273 |
| redhat/kernel | <5.10.214 | 5.10.214 |
| redhat/kernel | <5.15.153 | 5.15.153 |
| redhat/kernel | <6.1.83 | 6.1.83 |
| redhat/kernel | <6.6.23 | 6.6.23 |
| redhat/kernel | <6.7.11 | 6.7.11 |
| redhat/kernel | <6.8.2 | 6.8.2 |
| redhat/kernel | <6.9 | 6.9 |
| >=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 | ||
| Linux Kernel | >=2.6.21<4.19.311 | |
| Linux Kernel | >=4.20<5.4.273 | |
| Linux Kernel | >=5.5<5.10.214 | |
| Linux Kernel | >=5.11<5.15.153 | |
| Linux Kernel | >=5.16<6.1.83 | |
| Linux Kernel | >=6.2<6.6.23 | |
| Linux Kernel | >=6.7<6.7.11 | |
| Linux Kernel | >=6.8<6.8.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 |
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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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27043
- https://nvd.nist.gov/vuln/detail/CVE-2024-27043
- https://security-tracker.debian.org/tracker/CVE-2024-27043
- https://ubuntu.com/security/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://access.redhat.com/security/cve/CVE-2024-27043
- https://lore.kernel.org/linux-cve-announce/2024050113-CVE-2024-27043-f2fb@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2278446
- https://access.redhat.com/errata/RHSA-2024:10282
- https://access.redhat.com/errata/RHSA-2024:10281
- https://bugzilla.redhat.com/show_bug.cgi?id=2278445
- https://git.kernel.org/linus/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5
Frequently Asked Questions
What is the severity of CVE-2024-27043?
CVE-2024-27043 is classified with a high severity due to a use-after-free vulnerability in the Linux kernel.
How do I fix CVE-2024-27043?
To fix CVE-2024-27043, update to the latest kernel versions including 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2, or any newer versions available.
What systems are affected by CVE-2024-27043?
CVE-2024-27043 affects various versions of the Linux kernel, specifically those prior to versions 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, and others.
Is CVE-2024-27043 actively exploited?
There is currently no publicly available information indicating that CVE-2024-27043 is being actively exploited in the wild.
Who is responsible for addressing CVE-2024-27043?
The maintainers of the Linux kernel are responsible for addressing CVE-2024-27043 through patch releases distributed to users.
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