Vulnpedia
← All CVEs

CVE-2024-56616

HIGH 7.8 ALL-YEARS

Published 2024-12-27 · Last modified 2026-05-11 · Linux · NVD: Modified

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]

ELEVATED IMPACT

Severe if exploited (CVSS 7.8), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 12th percentile

○ In CISA KEV○ Catalogued PoC

Impact if exploited

7.8CVSS 3.1 · HIGH · NVD

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Linux

Products Linux Linux Kernel

Weakness (CWE)

  • CWE-129: Improper Validation of Array Index

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References and research data (JSON)

Vendor product assessments

Showing 32 of 417 vendor product statements; 385 omitted. Read the full vendor advisory.

  • kernel-64k-debug-debuginfo-0:5.14.0-570.12.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-devel-matched-0:5.14.0-570.12.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • python3-perf-0:5.14.0-570.12.1.el9_6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-64k-modules-core-0:5.14.0-570.12.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-debug-uki-virt-0:5.14.0-570.12.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-tools-0:5.14.0-570.12.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-debug-debuginfo-0:5.14.0-570.12.1.el9_6.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=aarch64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • libperf-debuginfo-0:5.14.0-570.12.1.el9_6.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=ppc64le

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-tools-debuginfo-0:5.14.0-570.12.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-debug-0:5.14.0-570.12.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • python3-perf-debuginfo-0:5.14.0-570.12.1.el9_6.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 9) · fixed

    Vendor assessment for this product only.

    pkg:rpm/redhat/[email protected]_6?arch=x86_64

    • vendor fix: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Vendor guidance
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • bpftool as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/bpftool

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-debug-core as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-core

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-headers as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-headers

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-debug as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-devel as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-devel

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt.src as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt?arch=src

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-zfcpdump-devel as a component of Red Hat Enterprise Linux 8 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-devel

    • no fix planned: Out of support scope
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt

    • no fix planned: Will not fix
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug-modules

    • no fix planned: Will not fix
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-kvm as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-kvm

    • no fix planned: Will not fix
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt.src as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt?arch=src

    • no fix planned: Will not fix
    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-devel as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-devel

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-kdump as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • bpftool as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/bpftool

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-debug as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-kdump as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-debug-devel

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-rt-trace as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-trace

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • kernel-tools as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-tools

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00
  • python-perf as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/python-perf

    Red Hat · CVE-2024-56616 · Updated 2026-06-28T08:15:58+00:00

Known Affected Software Configurations

VendorProductVersion range
LinuxLinux Kernel< 5.10.233
LinuxLinux Kernel≥ 5.11 and < 5.15.176
LinuxLinux Kernel≥ 5.16 and < 6.1.120
LinuxLinux Kernel≥ 6.2 and < 6.6.66
LinuxLinux Kernel≥ 6.7 and < 6.12.5
LinuxLinux Kernel6.13

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS