CVE-2026-98492net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths
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: net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths Fix 3 leaks in macb_alloc() error paths: - Tx buffer allocated but crossing a 4G boundary: Tx leaked. - Rx buffer allocation fails: Tx leaked. - Rx buffer allocated but crossing a 4G boundary: Tx & Rx leaked. This is because our error handling calls macb_free(bp) which in turn frees the buffers stored in bp->queues[0], but nothing has been stored in there. Fix by storing allocated buffers into bp->queues[0] ASAP.
- CVSS
- Not yet scored
- 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
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 78d901897b3cae06b38f54e48a2378cf9da21175 before bda487567d0b7b15dfa876511085c0666b9efad5; from 78d901897b3cae06b38f54e48a2378cf9da21175 before 259e6cbb6a097da8ced544ee92a6fbde35aa1338; 78d901897b3cae06b38f54e48a2378cf9da21175 builds before 23d42b9a3bcd55b17d3b371544fedc708c2397e9; 982a4d9a2e12b693f684eff943043a607628d871; from 6.17.3 before 6.18 | CNA record |
References
- https://git.kernel.org/stable/c/bda487567d0b7b15dfa876511085c0666b9efad5
- https://git.kernel.org/stable/c/259e6cbb6a097da8ced544ee92a6fbde35aa1338
- https://git.kernel.org/stable/c/23d42b9a3bcd55b17d3b371544fedc708c2397e9
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.