CVE-2026-98298: Linux kernel · dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in f448a5f5bd10d792440a1b08cf2e8f311767032d : patch Linux kernel soon.
Data as of 26 Oct 2026, 14:05 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f448a5f5bd10d792440a1b08cf2e8f311767032d, d920c07aa6d89ec11afdb6976aafaee9563a5234, bae65e4925928f77824ca0103122e2ed20ef5802 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available and has been applied in several Linux kernel commits. Users and administrators should update to a fixed kernel version containing these commits to remediate the issue.
Description
A vulnerability in the Linux kernel's dmaengine mmp_pdma driver causes incorrect scatter-gather (sg) length handling in the mmp_pdma_prep_slave_sg() function. This flaw leads to out-of-bounds reads and silent data loss when processing multi-entry scatter-gather lists with varying entry lengths.
References
- git.kernel.org/stable/c/f448a5f5bd10d792440a1b08cf2e8f311767032d (opens in a new tab)
- git.kernel.org/stable/c/2148db529f082d6e3ca95413bf943442f4ef30cc (opens in a new tab)
- git.kernel.org/stable/c/d920c07aa6d89ec11afdb6976aafaee9563a5234 (opens in a new tab)
- git.kernel.org/stable/c/4a33886057e6d127555efb022879c583e966acc5 (opens in a new tab)
- git.kernel.org/stable/c/88a505330eb06128f7ce79a4c5e4832b7601b3d1 (opens in a new tab)
- git.kernel.org/stable/c/bae65e4925928f77824ca0103122e2ed20ef5802 (opens in a new tab)
- git.kernel.org/stable/c/54ccc01012a240476edf641bf1a2b8bff54fe6ae (opens in a new tab)
- git.kernel.org/stable/c/075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47 (opens in a new tab)