# CVE-2024-56594: drm/amdgpu: set the right AMDGPU sg segment limitation

> Incorrect DMA segment size limits in the AMDGPU driver can trigger kernel warnings and potential instability, requiring a kernel patch.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Dec 2024
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2024-56594, DEBIAN-CVE-2024-56594, GHSA-xwfr-m7mh-vp2j, UBUNTU-CVE-2024-56594

## What is CVE-2024-56594?

CVE-2024-56594 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: set the right AMDGPU sg segment limitation

The driver needs to set the correct max_segment_size;
otherwise debug_dma_map_sg() will complain about the
over-mapping of the AMDGPU sg length as following:

WARNING: CPU: 6 PID: 1964 at kernel/dma/debug.c:1178 debug_dma_map_sg+0x2dc/0x370
[  364.049444] Modules linked in: veth amdgpu(OE) amdxcp drm_exec gpu_sched drm_buddy drm_ttm_helper ttm(OE) drm_suballoc_helper drm_display_helper drm_kms_helper i2c_algo_bit rpcsec_gss_krb5 auth_rpcgss nfsv4 nfs lockd grace netfs xt_conntrack xt_MASQUERADE nf_conntrack_netlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter br_netfilter nvme_fabrics overlay nfnetlink_cttimeout nfnetlink openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c bridge stp llc amd_atl intel_rapl_msr intel_rapl_common sunrpc sch_fq_codel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_scodec_component snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg edac_mce_amd binfmt_misc snd_hda_codec snd_pci_acp6x snd_hda_core snd_acp_config snd_hwdep snd_soc_acpi kvm_amd snd_pcm kvm snd_seq_midi snd_seq_midi_event crct10dif_pclmul ghash_clmulni_intel sha512_ssse3 snd_rawmidi sha256_ssse3 sha1_ssse3 aesni_intel snd_seq nls_iso8859_1 crypto_simd snd_seq_device cryptd snd_timer rapl input_leds snd
[  364.049532]  ipmi_devintf wmi_bmof ccp serio_raw k10temp sp5100_tco soundcore ipmi_msghandler cm32181 industrialio mac_hid msr parport_pc ppdev lp parport drm efi_pstore ip_tables x_tables pci_stub crc32_pclmul nvme ahci libahci i2c_piix4 r8169 nvme_core i2c_designware_pci realtek i2c_ccgx_ucsi video wmi hid_generic cdc_ether usbnet usbhid hid r8152 mii
[  364.049576] CPU: 6 PID: 1964 Comm: rocminfo Tainted: G           OE      6.10.0-custom #492
[  364.049579] Hardware name: AMD Majolica-RN/Majolica-RN, BIOS RMJ1009A 06/13/2021
[  364.049582] RIP: 0010:debug_dma_map_sg+0x2dc/0x370
[  364.049585] Code: 89 4d b8 e8 36 b1 86 00 8b 4d b8 48 8b 55 b0 44 8b 45 a8 4c 8b 4d a0 48 89 c6 48 c7 c7 00 4b 74 bc 4c 89 4d b8 e8 b4 73 f3 ff <0f> 0b 4c 8b 4d b8 8b 15 c8 2c b8 01 85 d2 0f 85 ee fd ff ff 8b 05
[  364.049588] RSP: 0018:ffff9ca600b57ac0 EFLAGS: 00010286
[  364.049590] RAX: 0000000000000000 RBX: ffff88b7c132b0c8 RCX: 0000000000000027
[  364.049592] RDX: ffff88bb0f521688 RSI: 0000000000000001 RDI: ffff88bb0f521680
[  364.049594] RBP: ffff9ca600b57b20 R08: 000000000000006f R09: ffff9ca600b57930
[  364.049596] R10: ffff9ca600b57928 R11: ffffffffbcb46328 R12: 0000000000000000
[  364.049597] R13: 0000000000000001 R14: ffff88b7c19c0700 R15: ffff88b7c9059800
[  364.049599] FS:  00007fb2d3516e80(0000) GS:ffff88bb0f500000(0000) knlGS:0000000000000000
[  364.049601] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  364.049603] CR2: 000055610bd03598 CR3: 00000001049f6000 CR4: 0000000000350ef0
[  364.049605] Call Trace:
[  364.049607]  <TASK>
[  364.049609]  ? show_regs+0x6d/0x80
[  364.049614]  ? __warn+0x8c/0x140
[  364.049618]  ? debug_dma_map_sg+0x2dc/0x370
[  364.049621]  ? report_bug+0x193/0x1a0
[  364.049627]  ? handle_bug+0x46/0x80
[  364.049631]  ? exc_invalid_op+0x1d/0x80
[  364.049635]  ? asm_exc_invalid_op+0x1f/0x30
[  364.049642]  ? debug_dma_map_sg+0x2dc/0x370
[  364.049647]  __dma_map_sg_attrs+0x90/0xe0
[  364.049651]  dma_map_sgtable+0x25/0x40
[  364.049654]  amdgpu_bo_move+0x59a/0x850 [amdgpu]
[  364.049935]  ? srso_return_thunk+0x5/0x5f
[  364.049939]  ? amdgpu_ttm_tt_populate+0x5d/0xc0 [amdgpu]
[  364.050095]  ttm_bo_handle_move_mem+0xc3/0x180 [ttm]
[  364.050103]  ttm_bo_validate+0xc1/0x160 [ttm]
[  364.050108]  ? amdgpu_ttm_tt_get_user_pages+0xe5/0x1b0 [amdgpu]
[  364.050263]  amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0xa12/0xc90 [amdgpu]
[  364.050473]  kfd_ioctl_alloc_memory_of_gpu+0x16b/0x3b0 [amdgpu]
[  364.050680]  kfd_ioctl+0x3c2/0x530 [amdgpu]
[  364.050866]  ? __pfx_kfd_ioctl_alloc_memory_of_gpu+0x10/0x10 [amdgpu]
[  364.05105
---truncated---

## Which versions are affected by CVE-2024-56594?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-56594?

Apply the vendor's patch.

## Is CVE-2024-56594 being exploited?

There is no known exploitation of CVE-2024-56594 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-56594 and fix it if it is affected.

What it is: CVE-2024-56594 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-56594 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-56594/ (Markdown: https://insights.sbomify.com/CVE-2024-56594/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-56594
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-56594
- OSV: https://osv.dev/vulnerability/CVE-2024-56594

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-56594/
Summaries are generated and may contain mistakes; the official description above is the record.