Medium 5.5Published Apr 24, 2026

CVE-2026-31658net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()

Updated under an hour ago (Oct 28, 2026, 1:50 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before ae2cd46f57f422b51aedd406ff5d75cbff401d5d; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before cb1d318702fdf643061350d164250198df4116f2; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before d5ec406f0543bd6cdfd563b08015fdec8c4d5712; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before 2eb9d67704ca8f1101f7435b85f113ede471f9f2; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before 9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before 60f462cd2716d86bd2174f9d5e035c9278f30480; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before 3aca300e88afe56afb000cdc4c65383014fb17f9; from bbd2190ce96d8fce031f0526c1f970b68adc9d1a before 6dede3967619b5944003227a5d09fdc21ed57d10	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.15.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.135; from 6.7 before 6.12.82; from 6.13 before 6.18.23; from 6.19 before 6.19.13; 3.15; and 7 more ranges	NVD

References

References

https://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d	patch
https://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2	patch
https://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712	patch
https://git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2	patch
https://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7	patch
https://git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480	patch
https://git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9	patch
https://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
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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.