CVE-2024-26787mmc: mmci: stm32: fix DMA API overlapping mappings warning
Updated under an hour ago ()
Does this affect you?
It affects Linux and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 46b723dd867d599420fb640c0eaf2a866ef721d4 before 0224cbc53ba82b84affa7619b6d1b1a254bc2c53; 46b723dd867d599420fb640c0eaf2a866ef721d4 builds before 5ae5060e17a3fc38e54c3e5bd8abd6b1d5bfae7c; from 46b723dd867d599420fb640c0eaf2a866ef721d4 before 70af82bb9c897faa25a44e4181f36c60312b71ef; from 46b723dd867d599420fb640c0eaf2a866ef721d4 before 176e66269f0de327375fc0ea51c12c2f5a97e4c4; from 46b723dd867d599420fb640c0eaf2a866ef721d4 before d610a307225951929b9dff807788439454476f85; 46b723dd867d599420fb640c0eaf2a866ef721d4 builds before 6b1ba3f9040be5efc4396d86c9752cdc564730be | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 4.20 before 5.10.213; from 5.11 before 5.15.152; from 5.16 before 6.1.81; from 6.2 before 6.6.21; from 6.7 before 6.7.9; 6.8; 6.8; 6.8; and 3 more ranges | NVD |
debian debian_linux debian:debian_linux | 10.0 | NVD |
References
- https://git.kernel.org/stable/c/0224cbc53ba82b84affa7619b6d1b1a254bc2c53patch
- https://git.kernel.org/stable/c/5ae5060e17a3fc38e54c3e5bd8abd6b1d5bfae7cpatch
- https://git.kernel.org/stable/c/70af82bb9c897faa25a44e4181f36c60312b71efpatch
- https://git.kernel.org/stable/c/176e66269f0de327375fc0ea51c12c2f5a97e4c4patch
- https://git.kernel.org/stable/c/d610a307225951929b9dff807788439454476f85patch
- https://git.kernel.org/stable/c/6b1ba3f9040be5efc4396d86c9752cdc564730bepatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlmailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.