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Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 

Pull dmi fix from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi: Fix unlikely out-of-bounds read in save_mem_devices
This commit is contained in:
Linus Torvalds 2019-10-15 09:20:07 -07:00
parent 5bc52f64e8 81dde26de9
commit 37b238da15
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/dmi_scan.c
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@ -408,7 +408,7 @@ static void __init save_mem_devices(const struct dmi_header *dm, void *v)
bytes = ~0ull;
else if (size & 0x8000)
bytes = (u64)(size & 0x7fff) << 10;
else if (size != 0x7fff)
else if (size != 0x7fff || dm->length < 0x20)
bytes = (u64)size << 20;
else
bytes = (u64)get_unaligned((u32 *)&d[0x1C]) << 20;