CVE-2026-31658
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-401
- Record status
- Modified
Affected
- Linux Kernel < 5.10.253
- Linux Kernel < 5.15.203
- Linux Kernel < 6.1.169
- Linux Kernel < 6.6.135
- Linux Kernel < 6.12.82
- Linux Kernel < 6.18.23
- Linux Kernel < 6.19.13
- Linux Kernel 3.15
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-31658.md and follow it. Check whether this project is affected by CVE-2026-31658. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2
- https://git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9
- https://git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480
- https://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10
- https://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7
- https://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d
- https://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2
- https://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712
References
- https://git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2
- https://git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9
- https://git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480
- https://git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10
- https://git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7
- https://git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d
- https://git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2
- https://git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html