Bug 2482017 (CVE-2026-45921)

Summary: CVE-2026-45921 kernel: mtd: parsers: Fix memory leak in mtd_parser_tplink_safeloader_parse()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's `mtd: parsers` component. A memory leak occurs in the `mtd_parser_tplink_safeloader_parse()` function. This happens when a buffer is allocated but not freed if a subsequent allocation for a part name fails, leading to unreleased memory. This could potentially lead to resource exhaustion over time, impacting system stability and availability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-27 15:07:15 UTC 
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.
Comment 1 Keith Grant 2026-05-28 01:17:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052724-CVE-2026-45921-065b@gregkh/T