Linux Kernel: altera-tse skb leak on DMA map error
CVE-2026-31658 Published on April 24, 2026
net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()
In the Linux kernel, the following vulnerability has been resolved:
net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()
When dma_map_single() fails in tse_start_xmit(), the function returns
NETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the
stack the packet was consumed, the skb is never freed, leaking memory
on every DMA mapping failure.
Add dev_kfree_skb_any() before returning to properly free the skb.
Products Associated with CVE-2026-31658
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Affected Versions
Linux:- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below ae2cd46f57f422b51aedd406ff5d75cbff401d5d is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below cb1d318702fdf643061350d164250198df4116f2 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below d5ec406f0543bd6cdfd563b08015fdec8c4d5712 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below 2eb9d67704ca8f1101f7435b85f113ede471f9f2 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below 9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below 60f462cd2716d86bd2174f9d5e035c9278f30480 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below 3aca300e88afe56afb000cdc4c65383014fb17f9 is affected.
- Version bbd2190ce96d8fce031f0526c1f970b68adc9d1a and below 6dede3967619b5944003227a5d09fdc21ed57d10 is affected.
- Version 3.15 is affected.
- Before 3.15 is unaffected.
- Version 5.10.253, <= 5.10.* is unaffected.
- Version 5.15.203, <= 5.15.* is unaffected.
- Version 6.1.169, <= 6.1.* is unaffected.
- Version 6.6.135, <= 6.6.* is unaffected.
- Version 6.12.82, <= 6.12.* is unaffected.
- Version 6.18.23, <= 6.18.* is unaffected.
- Version 6.19.13, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.