CVE-2024-43856dma: fix call order in dmam_free_coherent
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: dma: fix call order in dmam_free_coherent dmam_free_coherent() frees a DMA allocation, which makes the freed vaddr available for reuse, then calls devres_destroy() to remove and free the data structure used to track the DMA allocation. Between the two calls, it is possible for a concurrent task to make an allocation with the same vaddr and add it to the devres list. If this happens, there will be two entries in the devres list with the same vaddr and devres_destroy() can free the wrong entry, triggering the WARN_ON() in dmam_match. Fix by destroying the devres entry before freeing the DMA allocation. kokonut //net/encryption http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before fe2d246080f035e0af5793cb79067ba125e4fb63; 9ac7849e35f705830f7b016ff272b0ff1f7ff759 builds before 2f7bbdc744f2e7051d1cb47c8e082162df1923c9; from 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before 257193083e8f43907e99ea633820fc2b3bcd24c7; from 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before 87b34c8c94e29fa01d744e5147697f592998d954; from 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before f993a4baf6b622232e4c190d34c220179e5d61eb; 9ac7849e35f705830f7b016ff272b0ff1f7ff759 builds before 1fe97f68fce1ba24bf823bfb0eb0956003473130; from 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before 22094f5f52e7bc16c5bf9613365049383650b02e; from 9ac7849e35f705830f7b016ff272b0ff1f7ff759 before 28e8b7406d3a1f5329a03aa25a43aa28e087cb20 | 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 2.6.21 before 4.19.320; from 4.20 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 | NVD |
References
- https://git.kernel.org/stable/c/fe2d246080f035e0af5793cb79067ba125e4fb63patch
- https://git.kernel.org/stable/c/2f7bbdc744f2e7051d1cb47c8e082162df1923c9patch
- https://git.kernel.org/stable/c/257193083e8f43907e99ea633820fc2b3bcd24c7patch
- https://git.kernel.org/stable/c/87b34c8c94e29fa01d744e5147697f592998d954patch
- https://git.kernel.org/stable/c/f993a4baf6b622232e4c190d34c220179e5d61ebpatch
- https://git.kernel.org/stable/c/1fe97f68fce1ba24bf823bfb0eb0956003473130patch
- https://git.kernel.org/stable/c/22094f5f52e7bc16c5bf9613365049383650b02epatch
- https://git.kernel.org/stable/c/28e8b7406d3a1f5329a03aa25a43aa28e087cb20patch
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- 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.