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CVE-2026-53336: nvmem: layouts: onie-tlv: fix hang on unknown types

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-01 · updated 2026-07-23

Description

In the Linux kernel, the following vulnerability has been resolved: nvmem: layouts: onie-tlv: fix hang on unknown types The EEPROM on my board has a vendor specific entry of type 0x41. When stumbling upon that, this driver hangs in an endless loop. Fix it by keep incrementing the offset on unknown entries, so the loop will eventually stop.

Affected products

• Linux kernel: from 6.4 before 6.6.143; from 6.7 before 6.12.94; from 6.13 before 6.18.36; from 6.19 before 7.0.13; 7.1-rc1, 7.1-rc2, 7.1-rc3, 7.1-rc4, 7.1-rc5, 7.1-rc6 (+1) — fixed in 6.12.94, 6.18.36, 6.6.143, 7.0.13

How to fix

Upgrade to a fixed version: Linux kernel 6.12.94, 6.18.36, 6.6.143, 7.0.13. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/033d498b0f473c6456be5f885be172024ad84972
• https://git.kernel.org/stable/c/4a4d21f531ccf5bb333d99b620e0d66551f3652c
• https://git.kernel.org/stable/c/4f27eb01619c36cc8e3ce9a2a9af97f145f5d1c6
• https://git.kernel.org/stable/c/ea41020b9018e31c2ea7e9d89021e3e6d7470883
• https://git.kernel.org/stable/c/fd47edeabadfaa75422009dc5894e92c4c697517

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