CVE-2026-98298dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg() In mmp_pdma_prep_slave_sg(), for_each_sg() iterates the scatterlist putting each entry into 'sg', but the entry length is read from 'sgl' (the list head) instead of 'sg' (the current entry): for_each_sg(sgl, sg, sg_len, i) { addr = sg_dma_address(sg); avail = sg_dma_len(sgl); /* should be 'sg' */ Consequently 'avail' is always the length of the first entry. For multi-sg lists this causes out-of-bounds reads when a later entry is shorter than the first, and silent data loss when it is longer. Single-sg or uniformly-sized lists happen to mask the issue.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < f448a5f5bd10d792440a1b08cf2e8f311767032d
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < 2148db529f082d6e3ca95413bf943442f4ef30cc
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < d920c07aa6d89ec11afdb6976aafaee9563a5234
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < 4a33886057e6d127555efb022879c583e966acc5
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < 88a505330eb06128f7ce79a4c5e4832b7601b3d1
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < bae65e4925928f77824ca0103122e2ed20ef5802
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < 54ccc01012a240476edf641bf1a2b8bff54fe6ae
- affected c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 – < 075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47
- affected 3.7
- unaffected < 3.7
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/f448a5f5bd10d792440a1b08cf2e8f311767032d (opens in a new tab)
- https://git.kernel.org/stable/c/2148db529f082d6e3ca95413bf943442f4ef30cc (opens in a new tab)
- https://git.kernel.org/stable/c/d920c07aa6d89ec11afdb6976aafaee9563a5234 (opens in a new tab)
- https://git.kernel.org/stable/c/4a33886057e6d127555efb022879c583e966acc5 (opens in a new tab)
- https://git.kernel.org/stable/c/88a505330eb06128f7ce79a4c5e4832b7601b3d1 (opens in a new tab)
- https://git.kernel.org/stable/c/bae65e4925928f77824ca0103122e2ed20ef5802 (opens in a new tab)
- https://git.kernel.org/stable/c/54ccc01012a240476edf641bf1a2b8bff54fe6ae (opens in a new tab)
- https://git.kernel.org/stable/c/075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-93283 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-98298)Record last updated .