CVE-2024-26787

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2024-04-04. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

mmc: mmci: stm32: fix DMA API overlapping mappings warning

Turning on CONFIG_DMA_API_DEBUG_SG results in the following warning:

DMA-API: mmci-pl18x 48220000.mmc: cacheline tracking EEXIST, overlapping mappings aren't supported WARNING: CPU: 1 PID: 51 at kernel/dma/debug.c:568 add_dma_entry+0x234/0x2f4 Modules linked in: CPU: 1 PID: 51 Comm: kworker/1:2 Not tainted 6.1.28 #1 Hardware name: STMicroelectronics STM32MP257F-EV1 Evaluation Board (DT) Workqueue: events_freezable mmc_rescan Call trace: add_dma_entry+0x234/0x2f4 debug_dma_map_sg+0x198/0x350 __dma_map_sg_attrs+0xa0/0x110 dma_map_sg_attrs+0x10/0x2c sdmmc_idma_prep_data+0x80/0xc0 mmci_prep_data+0x38/0x84 mmci_start_data+0x108/0x2dc mmci_request+0xe4/0x190 __mmc_start_request+0x68/0x140 mmc_start_request+0x94/0xc0 mmc_wait_for_req+0x70/0x100 mmc_send_tuning+0x108/0x1ac sdmmc_execute_tuning+0x14c/0x210 mmc_execute_tuning+0x48/0xec mmc_sd_init_uhs_card.part.0+0x208/0x464 mmc_sd_init_card+0x318/0x89c mmc_attach_sd+0xe4/0x180 mmc_rescan+0x244/0x320

DMA API debug brings to light leaking dma-mappings as dma_map_sg and dma_unmap_sg are not correctly balanced.

If an error occurs in mmci_cmd_irq function, only mmci_dma_error function is called and as this API is not managed on stm32 variant, dma_unmap_sg is never called in this error path.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

April 4, 2024

Last Modified

May 12, 2026

References (14)

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1030.34) @ jammy2026-05-22ubuntu
ubuntulinux-tools-nvidia-lowlatency (5.15.0.1058.58) @ jammy2026-05-22ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1058.64~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1063.63) @ jammy2026-05-22ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1061.57) @ jammy2026-05-22ubuntu
ubuntulinux-tools-kvm (5.15.0.1060.56) @ jammy2026-05-22ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1066.64) @ jammy2026-05-22ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.113.123~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1052 (5.4.0-1052.56) @ focal2026-05-22ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1057.60~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1058.56) @ jammy2026-05-22ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1117.147) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1117.129~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-iot (5.4.0.1044.42) @ focal2026-05-22ubuntu
linuxKernel @ 5.10.213—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-08-06 13:45 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-04 15:08 UTCEPSS rescore
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  11. 2026-07-28 15:59 UTCOSV refresh
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  1. 2026-07-19 02:28 UTCEPSS rescore
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  7. 2026-07-15 01:59 UTCEPSS rescore
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  9. 2026-07-13 22:28 UTCEPSS rescore
  10. 2026-07-12 05:45 UTCEPSS rescore
  11. 2026-07-11 08:26 UTCEPSS rescore
  12. 2026-07-11 08:22 UTCOSV refresh
  13. 2026-07-09 19:09 UTCEPSS rescore
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  21. 2026-07-05 02:29 UTCEPSS rescore
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  23. 2026-07-01 15:05 UTCEPSS rescore
  24. 2026-06-30 23:21 UTCEPSS rescore
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  26. 2026-06-29 14:05 UTCEPSS rescore
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  37. 2026-06-23 21:32 UTCEPSS rescore
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  39. 2026-06-22 14:56 UTCOSV refresh
  40. 2026-06-22 14:24 UTCEPSS rescore
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  42. 2026-06-21 14:55 UTCEPSS rescore
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  72. 2026-06-05 00:39 UTCOSV refresh
  73. 2026-06-04 13:11 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2024-26787?
CVE-2024-26787 is a medium vulnerability published on April 4, 2024. In the Linux kernel, the following vulnerability has been resolved: mmc: mmci: stm32: fix DMA API overlapping mappings warning Turning on CONFIGDMAAPIDEBUGSG results in the following warning: DMA-API: mmci-pl18x 48220000.mmc: cacheline tracking EEXIST, overlapping mappings aren't supported WARNING:…
When was CVE-2024-26787 disclosed?
CVE-2024-26787 was first published in the National Vulnerability Database on April 4, 2024, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-26787 actively exploited?
CVE-2024-26787 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.7% of all scored CVEs.
What is the CVSS score of CVE-2024-26787?
CVE-2024-26787 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-26787?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-26787, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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