A vulnerability in debug_read_tlb() function was found leading to possible buffer overflow. The debug_read_tlb() uses the sprintf() functions directly on the buffer allocated by buf = kmalloc(count), without taking into account the size of the buffer, with the consequence corrupting the heap, depending on the count requested by the user. Upstream patch: https://patchwork.kernel.org/patch/6853351/ http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e203db293863fa15b4b1917d4398fb5bd63c4e88 CVE request: http://seclists.org/oss-sec/2015/q4/82
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1272141]
As far as I'm aware, this is only present in the omap-iommu-debug.c file. That limits it to: 1) 32-bit ARM 2) The omap2plus machine type for 32-bit ARM 3) Only built if the OMAP_IOMMU_DEBUG option is enabled.
Statement: This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2 as the code introduced the flaw is not present in these products.