68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
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{
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"leak pointer into ctx 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
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offsetof(struct __sk_buff, cb[0])),
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BPF_LD_MAP_FD(BPF_REG_2, 0),
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BPF_STX_XADD(BPF_DW, BPF_REG_1, BPF_REG_2,
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offsetof(struct __sk_buff, cb[0])),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_8b = { 2 },
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.errstr_unpriv = "R2 leaks addr into mem",
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.result_unpriv = REJECT,
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.result = REJECT,
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.errstr = "BPF_XADD stores into R1 ctx is not allowed",
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},
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{
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"leak pointer into ctx 2",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
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offsetof(struct __sk_buff, cb[0])),
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BPF_STX_XADD(BPF_DW, BPF_REG_1, BPF_REG_10,
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offsetof(struct __sk_buff, cb[0])),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "R10 leaks addr into mem",
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.result_unpriv = REJECT,
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.result = REJECT,
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.errstr = "BPF_XADD stores into R1 ctx is not allowed",
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},
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{
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"leak pointer into ctx 3",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_LD_MAP_FD(BPF_REG_2, 0),
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BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_2,
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offsetof(struct __sk_buff, cb[0])),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_8b = { 1 },
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.errstr_unpriv = "R2 leaks addr into ctx",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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},
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{
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"leak pointer into map val",
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.insns = {
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BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0),
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BPF_STX_XADD(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_8b = { 4 },
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.errstr_unpriv = "R6 leaks addr into mem",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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},
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