What’s Vulnerable › Vulnerabilities

CVE-2021-46965: mtd: physmap: physmap-bt1-rom: Fix unintentional stack access

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-27 · updated 2026-06-17
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: physmap: physmap-bt1-rom: Fix unintentional stack access Cast &data to (char *) in order to avoid unintentionally accessing the stack. Notice that data is of type u32, so any increment to &data will be in the order of 4-byte chunks, and this piece of code is actually intended to be a byte offset. Addresses-Coverity-ID: 1497765 ("Out-of-bounds access")

Affected products

• Linux kernel: from 5.10 before 5.10.36; from 5.11 before 5.11.20; from 5.12 before 5.12.3 — fixed in 5.10.36, 5.11.20, 5.12.3

How to fix

Upgrade to a fixed version: Linux kernel 5.10.36, 5.11.20, 5.12.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be
• https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb
• https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa
• https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925
• https://git.kernel.org/stable/c/34ec706bf0b7c4ca249a729c1bcb91f706c7a7be
• https://git.kernel.org/stable/c/4d786870e3262ec098a3b4ed10b895176bc66ecb
• https://git.kernel.org/stable/c/4e4ebb827bf09311469ffd9d0c14ed40ed9747aa
• https://git.kernel.org/stable/c/683313993dbe1651c7aa00bb42a041d70e914925

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