CVE-2026-99028: Linux kernel · net: xilinx: axienet: Free outstanding DMA buffers on dmaengine stop
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in eececf7c3a679d9c08175ad6bacbc8c31848f5af : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in eececf7c3a679d9c08175ad6bacbc8c31848f5af, bcf2573a68a808a5b54cadafa72b6672e662c2bf, 079396129da5e7cb40ca0920aa1b9525bef6097c +1
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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 Linux kernel to eececf7c3a679d9c08175ad6bacbc8c31848f5af, bcf2573a68a808a5b54cadafa72b6672e662c2bf, 079396129da5e7cb40ca0920aa1b9525bef6097c or 5e5cf3ad7c099ff86ea9e422cddb25a2e5317b58.
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– |
AI-suggested
This vulnerability has been fixed in the Linux kernel. The fix includes freeing all outstanding DMA buffers on dmaengine stop and adding synchronization to prevent race conditions. Users should update to the fixed kernel versions containing the patches identified by commits eececf7c3a679d9c08175ad6bacbc8c31848f5af, bcf2573a68a808a5b54cadafa72b6672e662c2bf, 079396129da5e7cb40ca0920aa1b9525bef6097c, and 5e5cf3ad7c099ff86ea9e422cddb25a2e5317b58. No additional mitigation is required once updated.
Description
A vulnerability in the Linux kernel's Xilinx axienet driver causes DMA buffers to leak when the dmaengine is stopped. This occurs because outstanding DMA-mapped socket buffers (SKBs) are not freed properly on interface stop, potentially exhausting IOMMU resources. The issue is fixed by ensuring all DMA buffers are freed on stop and adding synchronization to prevent race conditions during teardown.
References
- git.kernel.org/stable/c/079396129da5e7cb40ca0920aa1b9525bef6097c (opens in a new tab)
- git.kernel.org/stable/c/eececf7c3a679d9c08175ad6bacbc8c31848f5af (opens in a new tab)
- git.kernel.org/stable/c/5e5cf3ad7c099ff86ea9e422cddb25a2e5317b58 (opens in a new tab)
- git.kernel.org/stable/c/bcf2573a68a808a5b54cadafa72b6672e662c2bf (opens in a new tab)