Bugzilla – Bug 1220624
VUL-0: CVE-2021-46940: kernel: tools/power turbostat: Fix offset overflow issue in index converting
Last modified: 2024-04-29 07:12:38 UTC
In the Linux kernel, the following vulnerability has been resolved: tools/power turbostat: Fix offset overflow issue in index converting The idx_to_offset() function returns type int (32-bit signed), but MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number. The end result is that it hits the if (offset < 0) check in update_msr_sum() which prevents the timer callback from updating the stat in the background when long durations are used. The similar issue exists in offset_to_idx() and update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-46940 https://www.cve.org/CVERecord?id=CVE-2021-46940 https://bugzilla.redhat.com/show_bug.cgi?id=2266494 https://lore.kernel.org/linux-cve-announce/20240227184057.2368370-5-gregkh@linuxfoundation.org/T/#u Patch: https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0
Closing since all code streams are already patched or not affected.
This is not a kernel code. This is a powertop tool and as such shouldn't really be considered security relevant. Please close as invalid