Bugzilla – Bug 1218502
VUL-0: CVE-2023-50711: sevctl: vmm-sys-util: out of bounds memory accesses
Last modified: 2024-06-11 14:00:51 UTC
+++ This bug was initially created as a clone of Bug #1218499 +++ vmm-sys-util is a collection of modules that provides helpers and utilities used by multiple rust-vmm components. Starting in version 0.5.0 and prior to version 0.12.0, an issue in the `FamStructWrapper::deserialize` implementation provided by the crate for `vmm_sys_util::fam::FamStructWrapper` can lead to out of bounds memory accesses. The deserialization does not check that the length stored in the header matches the flexible array length. Mismatch in the lengths might allow out of bounds memory access through Rust-safe methods. The issue was corrected in version 0.12.0 by inserting a check that verifies the lengths of compared flexible arrays are equal for any deserialized header and aborting deserialization otherwise. Moreover, the API was changed so that header length can only be modified through Rust-unsafe code. This ensures that users cannot trigger out-of-bounds memory access from Rust-safe code. References: https://github.com/rust-vmm/vmm-sys-util/security/advisories/GHSA-875g-mfp6-g7f9 https://github.com/rust-vmm/vmm-sys-util/commit/30172fca2a8e0a38667d934ee56682247e13f167 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-50711
SUSE:SLE-15-SP5:Update/sevctl uses an affected version of the vmm-sys-util crate.
This is an autogenerated message for OBS integration: This bug (1218502) was mentioned in https://build.opensuse.org/request/show/1141311 Factory / sevctl
SUSE-SU-2024:0250-1: An update that solves one vulnerability, contains one feature and has one security fix can now be installed. Category: security (important) Bug References: 1218499, 1218502 CVE References: CVE-2023-50711 Jira References: PED-4981 Sources used: openSUSE Leap 15.5 (src): sevctl-0.4.3-150500.3.3.1 Server Applications Module 15-SP5 (src): sevctl-0.4.3-150500.3.3.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Fixed in Factory, SP5, and SP6
This is an autogenerated message for OBS integration: This bug (1218502) was mentioned in https://build.opensuse.org/request/show/1142838 Factory / virtiofsd