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CVE-2026-45921: mtd: parsers: Fix memory leak in mtd_parser_tplink_safeloader_parse()

• 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: 2026-05-27 · updated 2026-06-24
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: parsers: Fix memory leak in mtd_parser_tplink_safeloader_parse() The function mtd_parser_tplink_safeloader_parse() allocates buf via mtd_parser_tplink_safeloader_read_table(). If the allocation for parts[idx].name fails inside the loop, the code jumps to the err_free label without freeing buf, leading to a memory leak. Fix this by freeing the temporary buffer buf in the err_free label. Compile tested only. Issue found using a prototype static analysis tool and code review.

Affected products

• Linux kernel: from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; from 6.19 before 6.19.4 — fixed in 6.12.75, 6.18.14, 6.19.4, 6.6.128

How to fix

Upgrade to a fixed version: Linux kernel 6.12.75, 6.18.14, 6.19.4, 6.6.128. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0f5e62ea5c43146eacdc6861cb1022ffae1b79bc
• https://git.kernel.org/stable/c/971e9c53aed82f17a9c6a65daa4e21cc15eba5b1
• https://git.kernel.org/stable/c/980ce2b02dd06a4fdf5fee38b2e14becf9cf7b8b
• https://git.kernel.org/stable/c/e97f5fac8ce9a6b9ec724c97d86b0985e915fdca
• https://git.kernel.org/stable/c/ec121ad626c319085f6d40a52cd04e99b4554926

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