Description
In the Linux kernel, the following vulnerability has been resolved: mtd: spi-nor: Fix shift-out-of-bounds in spi_nor_set_erase_type spi_nor_set_erase_type() was used either to set or to mask out an erase type. When we used it to mask out an erase type a shift-out-of-bounds was hit: UBSAN: shift-out-of-bounds in drivers/mtd/spi-nor/core.c:2237:24 shift exponent 4294967295 is too large for 32-bit type 'int' The setting of the size_{shift, mask} and of the opcode are unnecessary when the erase size is zero, as throughout the code just the erase size is considered to determine whether an erase type is supported or not. Setting the opcode to 0xFF was wrong too as nobody guarantees that 0xFF is an unused opcode. Thus when masking out an erase type, just set the erase size to zero. This will fix the shift-out-of-bounds. [ta: refine changes, new commit message, fix compilation error]
Product status
5390a8df769ec9ba9c995191bb0867430f602ebb (git) before e6409208c13f7c56adc12dd795abf4141e3d5e64
5390a8df769ec9ba9c995191bb0867430f602ebb (git) before 61d44a4db2f54dbac7d22c2541574ea5755e0468
5390a8df769ec9ba9c995191bb0867430f602ebb (git) before 53b2916ebde741c657a857fa1936c0d9fcb59170
5390a8df769ec9ba9c995191bb0867430f602ebb (git) before 99341b8aee7b5b4255b339345bbcaa35867dfd0c
5390a8df769ec9ba9c995191bb0867430f602ebb (git) before f0f0cfdc3a024e21161714f2e05f0df3b84d42ad
4.20
Any version before 4.20
5.10.173 (semver)
5.15.99 (semver)
6.1.16 (semver)
6.2.3 (semver)
6.3 (original_commit_for_fix)
References
git.kernel.org/...c/e6409208c13f7c56adc12dd795abf4141e3d5e64
git.kernel.org/...c/61d44a4db2f54dbac7d22c2541574ea5755e0468
git.kernel.org/...c/53b2916ebde741c657a857fa1936c0d9fcb59170
git.kernel.org/...c/99341b8aee7b5b4255b339345bbcaa35867dfd0c
git.kernel.org/...c/f0f0cfdc3a024e21161714f2e05f0df3b84d42ad
Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.
