In xtcompattargetfromuser of x_tables.c, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
{
"types": [
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],
"spl": "2021-10-05",
"severity": "Moderate",
"vanir_signatures": [
{
"id": "PUB-A-184847809-877d7e4d",
"target": {
"file": "net/ipv4/netfilter/arp_tables.c"
},
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"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
},
{
"id": "PUB-A-184847809-9d52b6eb",
"target": {
"file": "net/ipv4/netfilter/ip_tables.c"
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"digest": {
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{
"id": "PUB-A-184847809-a9136302",
"target": {
"function": "xt_compat_match_from_user",
"file": "net/netfilter/x_tables.c"
},
"digest": {
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"function_hash": "112288550243795503554430237613510029675"
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"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
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{
"id": "PUB-A-184847809-aa97388e",
"target": {
"file": "net/netfilter/x_tables.c"
},
"digest": {
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},
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"id": "PUB-A-184847809-c4d75a1a",
"target": {
"function": "xt_compat_target_from_user",
"file": "net/netfilter/x_tables.c"
},
"digest": {
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"function_hash": "237265457552964565150363111904283971957"
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"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
},
{
"id": "PUB-A-184847809-ceb06cdc",
"target": {
"function": "translate_compat_table",
"file": "net/ipv4/netfilter/arp_tables.c"
},
"digest": {
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"function_hash": "197367519223820433962020977817939286027"
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},
{
"id": "PUB-A-184847809-dda47bcd",
"target": {
"file": "net/ipv6/netfilter/ip6_tables.c"
},
"digest": {
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"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
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{
"id": "PUB-A-184847809-e7f612d9",
"target": {
"function": "translate_compat_table",
"file": "net/ipv4/netfilter/ip_tables.c"
},
"digest": {
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"function_hash": "334980115648599037794136451126372025221"
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"signature_version": "v1",
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"signature_type": "Function",
"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
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{
"id": "PUB-A-184847809-f9d2d880",
"target": {
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"file": "net/ipv6/netfilter/ip6_tables.c"
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"digest": {
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"source": "https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
}
],
"fixes": [
"https://android.googlesource.com/kernel/common/+/b29c457a6511435960115c0f548c4360d5f4801d"
]
}