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Diffstat (limited to 'results/classifier/deepseek-r1:32b/output/instruction/1859713')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/output/instruction/1859713 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/output/instruction/1859713 b/results/classifier/deepseek-r1:32b/output/instruction/1859713 new file mode 100644 index 000000000..52aabc3d9 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/output/instruction/1859713 @@ -0,0 +1,28 @@ + + + +ARM v8.3a pauth not working + +Host: Ubuntu 19.10 - x86_64 machine +QEMU version: 3a63b24a1bbf166e6f455fe43a6bbd8dea413d92 (master) + +ARMV8.3 pauth is not working well. + +With a test code containing two pauth instructions: + - paciasp that sign LR with A key and sp as context; + - autiasp that verify the signature. + +Test: + - Run the program and corrupt LR just before autiasp (ex 0x3e00000400660 instead of 0x3e000000400664) + +Expected: + - autiasp places an invalid pointer in LR + +Result: + - autiasp successfully auth the pointer and places 0x0400660 in LR. + +Further explanations: + Adding traces in qemu code shows that "pauth_computepac" is not robust enough against truncating. + With 0x31000000400664 as input of pauth_auth, we obtain "0x55b1d65b2c138e14" for PAC, "0x30" for bot_bit and "0x38" for top_bit. + With 0x310040008743ec as input of pauth (with same key), we obtain "0x55b1d65b2c138ef4" for PAC, "0x30" for bot_bit and "0x38" for top_bit. + Values of top_bit and bottom_bit are strictly the same and it should not. \ No newline at end of file |