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.

References 5

• git.kernel.org https://git.kernel.org/stable/c/1f09d67d390647f83f8f9d26382b0daa43756e6f
• git.kernel.org https://git.kernel.org/stable/c/49e57caf967a969f6b955c88805f2d160910aa12
• git.kernel.org https://git.kernel.org/stable/c/c6abce60338aa2080973cd95be0aedad528bb41f
• git.kernel.org https://git.kernel.org/stable/c/eb7a5e4d14c8659cb97db6863316280e15f67209
• git.kernel.org https://git.kernel.org/stable/c/f4b700c71802c81e6f9dce362ee7a0312c8377ba

Remediation