In the Linux kernel, the following vulnerability has been resolved:
net: add vlangetprotocolanddepth() helper
Before blamed commit, pskbmaypull() was used instead of skbheaderpointer() in _vlanget_protocol() and friends.
Few callers depended on skb->head being populated with MAC header, syzbot caught one of them (skbmacgso_segment())
Add vlangetprotocolanddepth() to make the intent clearer and use it where sensible.
This is a more generic fix than commit e9d3f80935b6 ("net/af_packet: make sure to pull mac header") which was dealing with a similar issue.
kernel BUG at include/linux/skbuff.h:2655 ! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 1441 Comm: syz-executor199 Not tainted 6.1.24-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:_skbpull include/linux/skbuff.h:2655 [inline] RIP: 0010:skbmacgsosegment+0x68f/0x6a0 net/core/gro.c:136 Code: fd 48 8b 5c 24 10 44 89 6b 70 48 c7 c7 c0 ae 0d 86 44 89 e6 e8 a1 91 d0 00 48 c7 c7 00 af 0d 86 48 89 de 31 d2 e8 d1 4a e9 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 RSP: 0018:ffffc90001bd7520 EFLAGS: 00010286 RAX: ffffffff8469736a RBX: ffff88810f31dac0 RCX: ffff888115a18b00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001bd75e8 R08: ffffffff84697183 R09: fffff5200037adf9 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000012 R13: 000000000000fee5 R14: 0000000000005865 R15: 000000000000fed7 FS: 000055555633f300(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000116fea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> [<ffffffff847018dd>] _skbgsosegment+0x32d/0x4c0 net/core/dev.c:3419 [<ffffffff8470398a>] skbgsosegment include/linux/netdevice.h:4819 [inline] [<ffffffff8470398a>] validatexmitskb+0x3aa/0xee0 net/core/dev.c:3725 [<ffffffff84707042>] _devqueuexmit+0x1332/0x3300 net/core/dev.c:4313 [<ffffffff851a9ec7>] devqueuexmit+0x17/0x20 include/linux/netdevice.h:3029 [<ffffffff851b4a82>] packetsnd net/packet/afpacket.c:3111 [inline] [<ffffffff851b4a82>] packetsendmsg+0x49d2/0x6470 net/packet/afpacket.c:3142 [<ffffffff84669a12>] socksendmsgnosec net/socket.c:716 [inline] [<ffffffff84669a12>] socksendmsg net/socket.c:736 [inline] [<ffffffff84669a12>] _syssendto+0x472/0x5f0 net/socket.c:2139 [<ffffffff84669c75>] _dosyssendto net/socket.c:2151 [inline] [<ffffffff84669c75>] _sesyssendto net/socket.c:2147 [inline] [<ffffffff84669c75>] _x64syssendto+0xe5/0x100 net/socket.c:2147 [<ffffffff8551d40f>] dosyscallx64 arch/x86/entry/common.c:50 [inline] [<ffffffff8551d40f>] dosyscall64+0x2f/0x50 arch/x86/entry/common.c:80 [<ffffffff85600087>] entrySYSCALL64after_hwframe+0x63/0xcd
[
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"230817205080662278103954221183323331428",
"261630669201256081615114153897133814315",
"126400051358878428549351946125539638834",
"240467548734701931411929949128970307460"
]
},
"target": {
"file": "net/core/dev.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-004e09c1",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"230817205080662278103954221183323331428",
"261630669201256081615114153897133814315",
"126400051358878428549351946125539638834",
"240467548734701931411929949128970307460"
]
},
"target": {
"file": "net/core/dev.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-05a0b8f7",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"239804868294905466961872335216857519454",
"112496808995202587488228348722347873553",
"175773073649883445176930996401376346012",
"278973502921869922420509883591799910610"
]
},
"target": {
"file": "net/bridge/br_forward.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-06a8f49e",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"204076102956133190002692294399369803710",
"188172626858603464112385520286541610827",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982",
"295402723068578403231549882824628380246",
"171915678554260843485880504386028334471",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982"
]
},
"target": {
"file": "drivers/net/tap.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-17493481",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Function",
"digest": {
"function_hash": "238488728745038813176007504561666217244",
"length": 474.0
},
"target": {
"file": "net/packet/af_packet.c",
"function": "packet_parse_headers"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-1b78c093",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"239804868294905466961872335216857519454",
"112496808995202587488228348722347873553",
"175773073649883445176930996401376346012",
"278973502921869922420509883591799910610"
]
},
"target": {
"file": "net/bridge/br_forward.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-3f7771b5",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"309230423765822745594849240148107831091",
"27928102049542233558059697673602996222",
"4975352003176533451658508660790145894"
]
},
"target": {
"file": "include/linux/if_vlan.h"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-49ff021d",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"195480977000776267578347166199557593413",
"164759407917457611534191946793786927891",
"175773073649883445176930996401376346012",
"278973502921869922420509883591799910610"
]
},
"target": {
"file": "net/bridge/br_forward.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-4e5001d9",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"230817205080662278103954221183323331428",
"261630669201256081615114153897133814315",
"82273772134537329033571783719957397654",
"21153905795626431814720709018720434520"
]
},
"target": {
"file": "net/core/dev.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-4ea9a314",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"309230423765822745594849240148107831091",
"27928102049542233558059697673602996222",
"4975352003176533451658508660790145894"
]
},
"target": {
"file": "include/linux/if_vlan.h"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-50befa31",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"309230423765822745594849240148107831091",
"27928102049542233558059697673602996222",
"4975352003176533451658508660790145894"
]
},
"target": {
"file": "include/linux/if_vlan.h"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-9026ad16",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"204076102956133190002692294399369803710",
"188172626858603464112385520286541610827",
"190481010492907393093553491459444710145",
"305126578804205951185785879561961852729",
"295402723068578403231549882824628380246",
"171915678554260843485880504386028334471",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982"
]
},
"target": {
"file": "drivers/net/tap.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-97aa875e",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"215506573538004272257408435660975396577",
"108168325234798427610851019927594164486",
"192607916160692602047461568527838561222",
"181140243501199935195591512576491961417",
"317391417383748259111518505901555803950",
"99707822124828032937615338699904436720",
"183930334983511071080399480283390062683"
]
},
"target": {
"file": "net/packet/af_packet.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-9ca7589f",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"215506573538004272257408435660975396577",
"108168325234798427610851019927594164486",
"192607916160692602047461568527838561222",
"181140243501199935195591512576491961417",
"317391417383748259111518505901555803950",
"99707822124828032937615338699904436720",
"183930334983511071080399480283390062683"
]
},
"target": {
"file": "net/packet/af_packet.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-a51172c6",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"215506573538004272257408435660975396577",
"108168325234798427610851019927594164486",
"192607916160692602047461568527838561222",
"181140243501199935195591512576491961417",
"317391417383748259111518505901555803950",
"99707822124828032937615338699904436720",
"183930334983511071080399480283390062683"
]
},
"target": {
"file": "net/packet/af_packet.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-c484bfe5",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"215506573538004272257408435660975396577",
"108168325234798427610851019927594164486",
"192607916160692602047461568527838561222",
"181140243501199935195591512576491961417",
"317391417383748259111518505901555803950",
"99707822124828032937615338699904436720",
"183930334983511071080399480283390062683"
]
},
"target": {
"file": "net/packet/af_packet.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-c9b2369a",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Function",
"digest": {
"function_hash": "238488728745038813176007504561666217244",
"length": 474.0
},
"target": {
"file": "net/packet/af_packet.c",
"function": "packet_parse_headers"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-ca31f106",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Function",
"digest": {
"function_hash": "238488728745038813176007504561666217244",
"length": 474.0
},
"target": {
"file": "net/packet/af_packet.c",
"function": "packet_parse_headers"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-cbffcd81",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"204076102956133190002692294399369803710",
"188172626858603464112385520286541610827",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982",
"295402723068578403231549882824628380246",
"171915678554260843485880504386028334471",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982"
]
},
"target": {
"file": "drivers/net/tap.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@34a5ee69ec6273f0aee79e7ce4d14afc83ca8122",
"id": "CVE-2023-53433-d142735b",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"230817205080662278103954221183323331428",
"261630669201256081615114153897133814315",
"126400051358878428549351946125539638834",
"240467548734701931411929949128970307460"
]
},
"target": {
"file": "net/core/dev.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-d8b7eef6",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"204076102956133190002692294399369803710",
"188172626858603464112385520286541610827",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982",
"295402723068578403231549882824628380246",
"171915678554260843485880504386028334471",
"285570212733536729374872487830589684237",
"32012005901439845127087151773097059982"
]
},
"target": {
"file": "drivers/net/tap.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-e99569ba",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Function",
"digest": {
"function_hash": "238488728745038813176007504561666217244",
"length": 474.0
},
"target": {
"file": "net/packet/af_packet.c",
"function": "packet_parse_headers"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9dd9ffe118415b4ac1cebac43443000072bc8f46",
"id": "CVE-2023-53433-eb200b9a",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"195480977000776267578347166199557593413",
"164759407917457611534191946793786927891",
"175773073649883445176930996401376346012",
"278973502921869922420509883591799910610"
]
},
"target": {
"file": "net/bridge/br_forward.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4063384ef762cc5946fc7a3f89879e76c6ec51e2",
"id": "CVE-2023-53433-ec3dccdb",
"deprecated": false,
"signature_version": "v1"
},
{
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"309230423765822745594849240148107831091",
"27928102049542233558059697673602996222",
"4975352003176533451658508660790145894"
]
},
"target": {
"file": "include/linux/if_vlan.h"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4188c5269475ac59d467b5814c5df02756f6d907",
"id": "CVE-2023-53433-f66c57ec",
"deprecated": false,
"signature_version": "v1"
}
]