- Vulnerability/
- CVE-2024-56616
CVE-2024-56616: drm/dp_mst: Fix MST sideband message body length check
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/dp_mst: Fix MST sideband message body length check Fix the MST sideband message body length check, which must be at least 1 byte accounting for the message body CRC (aka message data CRC) at the end of the message. This fixes a case where an MST branch device returns a header with a correct header CRC (indicating a correctly received body length), with the body length being incorrectly set to 0. This will later lead to a memory corruption in drm_dp_sideband_append_payload() and the following errors in dmesg: UBSAN: array-index-out-of-bounds in drivers/gpu/drm/display/drm_dp_mst_topology.c:786:25 index -1 is out of range for type 'u8 [48]' Call Trace: drm_dp_sideband_append_payload+0x33d/0x350 [drm_display_helper] drm_dp_get_one_sb_msg+0x3ce/0x5f0 [drm_display_helper] drm_dp_mst_hpd_irq_handle_event+0xc8/0x1580 [drm_display_helper] memcpy: detected field-spanning write (size 18446744073709551615) of single field "&msg->msg[msg->curlen]" at drivers/gpu/drm/display/drm_dp_mst_topology.c:791 (size 256) Call Trace: drm_dp_sideband_append_payload+0x324/0x350 [drm_display_helper] drm_dp_get_one_sb_msg+0x3ce/0x5f0 [drm_display_helper] drm_dp_mst_hpd_irq_handle_event+0xc8/0x1580 [drm_display_helper]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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/109f91d8b9335b0f3714ef9920eae5a8b21d56af
- https://git.kernel.org/stable/c/1fc1f32c4a3421b9d803f18ec3ef49db2fb5d5ef
- https://git.kernel.org/stable/c/70e7166612f4e6da8d7d0305c47c465d88d037e5
- https://git.kernel.org/stable/c/780fa184d4dc38ad6c4fded345ab8f9be7a63e96
- https://git.kernel.org/stable/c/bd2fccac61b40eaf08d9546acc9fef958bfe4763
- https://git.kernel.org/stable/c/c58947a8d4a500902597ee1dbadf0518d7ff8801
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56616
- https://nvd.nist.gov/vuln/detail/CVE-2024-56616
- https://launchpad.net/bugs/cve/CVE-2024-56616
- https://security-tracker.debian.org/tracker/CVE-2024-56616
- https://ubuntu.com/security/CVE-2024-56616
- https://git.kernel.org/linus/bd2fccac61b40eaf08d9546acc9fef958bfe4763
Frequently Asked Questions
What is the severity of CVE-2024-56616?
The severity of CVE-2024-56616 has not been explicitly categorized, but it addresses a significant issue in the Linux kernel related to message body length checks.
How do I fix CVE-2024-56616?
To fix CVE-2024-56616, update your Linux kernel to the latest stable version that includes the patch for the fix.
Which versions of the Linux Kernel are affected by CVE-2024-56616?
CVE-2024-56616 affects multiple versions of the Linux Kernel prior to the application of the relevant fix.
What are the potential impacts of CVE-2024-56616 if left unpatched?
If left unpatched, CVE-2024-56616 could potentially lead to security vulnerabilities that might expose the system to various attacks.
Is CVE-2024-56616 related to graphics processing in Linux?
Yes, CVE-2024-56616 is related to the Direct Rendering Manager (DRM) in Linux, specifically concerning MST sideband message handling.
- agent/title
- agent/severity
- agent/type
- agent/first-publish-date
- agent/author
- collector/nvd-api
- source/NVD
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- collector/launchpad-cve
- source/Launchpad
- agent/description
- agent/references
- agent/source
- agent/softwarecombine
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- vendor/linux
- canonical/linux kernel
- package-manager/debian