Description
In the Linux kernel, the following vulnerability has been resolved: mtdchar: fix integer overflow in read/write ioctls The "req.start" and "req.len" variables are u64 values that come from the user at the start of the function. We mask away the high 32 bits of "req.len" so that's capped at U32_MAX but the "req.start" variable can go up to U64_MAX which means that the addition can still integer overflow. Use check_add_overflow() to fix this bug.
Product status
6420ac0af95dbcb2fd8452e2d551ab50e1bbad83 (git) before f37efdd97fd1ec3e0d0f1eec279c8279e28f981e
6420ac0af95dbcb2fd8452e2d551ab50e1bbad83 (git) before 457376c6fbf0c69326a9bf1f72416225f681192b
6420ac0af95dbcb2fd8452e2d551ab50e1bbad83 (git) before eb9361484814fb12f3b7544b33835ea67d7a6a97
6420ac0af95dbcb2fd8452e2d551ab50e1bbad83 (git) before 37944f4f8199cd153fef74e95ca268020162f212
6420ac0af95dbcb2fd8452e2d551ab50e1bbad83 (git) before e4185bed738da755b191aa3f2e16e8b48450e1b8
5.17
Any version before 5.17
6.1.159 (semver)
6.6.118 (semver)
6.12.60 (semver)
6.17.10 (semver)
6.18 (original_commit_for_fix)
References
git.kernel.org/...c/f37efdd97fd1ec3e0d0f1eec279c8279e28f981e
git.kernel.org/...c/457376c6fbf0c69326a9bf1f72416225f681192b
git.kernel.org/...c/eb9361484814fb12f3b7544b33835ea67d7a6a97
git.kernel.org/...c/37944f4f8199cd153fef74e95ca268020162f212
git.kernel.org/...c/e4185bed738da755b191aa3f2e16e8b48450e1b8
Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.