CVE-2023-54104

mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()

State: Published
Severity: 7.8 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 24, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()

'op-cs' is copied in 'fun->mchip_number' which is used to access the 'mchip_offsets' and the 'rnb_gpio' arrays. These arrays have NAND_MAX_CHIPS elements, so the index must be below this limit.

Fix the sanity check in order to avoid the NAND_MAX_CHIPS value. This would lead to out-of-bound accesses.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	54309d65776755bcdb9dcf3744cd764fc1e254ea to before 1f09d67d390647f83f8f9d26382b0daa43756e6fAffected 54309d65776755bcdb9dcf3744cd764fc1e254ea to before eb7a5e4d14c8659cb97db6863316280e15f67209Affected 54309d65776755bcdb9dcf3744cd764fc1e254ea to before f4b700c71802c81e6f9dce362ee7a0312c8377baAffected 54309d65776755bcdb9dcf3744cd764fc1e254ea to before 49e57caf967a969f6b955c88805f2d160910aa12Affected 54309d65776755bcdb9dcf3744cd764fc1e254ea to before c6abce60338aa2080973cd95be0aedad528bb41fAffected
LinuxLinux	5.9Affected before 5.9Not affected 5.10.190 through 5.10.Not affected 5.15.126 through 5.15.Not affected 6.1.45 through 6.1.Not affected 6.4.10 through 6.4.Not affected 6.5 and laterNot affected

Product

Versions

LinuxLinux

54309d65776755bcdb9dcf3744cd764fc1e254ea to before 1f09d67d390647f83f8f9d26382b0daa43756e6fAffected
54309d65776755bcdb9dcf3744cd764fc1e254ea to before eb7a5e4d14c8659cb97db6863316280e15f67209Affected
54309d65776755bcdb9dcf3744cd764fc1e254ea to before f4b700c71802c81e6f9dce362ee7a0312c8377baAffected
54309d65776755bcdb9dcf3744cd764fc1e254ea to before 49e57caf967a969f6b955c88805f2d160910aa12Affected
54309d65776755bcdb9dcf3744cd764fc1e254ea to before c6abce60338aa2080973cd95be0aedad528bb41fAffected

LinuxLinux

5.9Affected
before 5.9Not affected
5.10.190 through 5.10.*Not affected
5.15.126 through 5.15.*Not affected
6.1.45 through 6.1.*Not affected
6.4.10 through 6.4.*Not affected
6.5 and laterNot affected

References

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