CVE-2025-38147 (GCVE-0-2025-38147)
Vulnerability from cvelistv5
Published
2025-07-03 08:35
Modified
2025-07-28 04:13
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
calipso: Don't call calipso functions for AF_INET sk.
syzkaller reported a null-ptr-deref in txopt_get(). [0]
The offset 0x70 was of struct ipv6_txoptions in struct ipv6_pinfo,
so struct ipv6_pinfo was NULL there.
However, this never happens for IPv6 sockets as inet_sk(sk)->pinet6
is always set in inet6_create(), meaning the socket was not IPv6 one.
The root cause is missing validation in netlbl_conn_setattr().
netlbl_conn_setattr() switches branches based on struct
sockaddr.sa_family, which is passed from userspace. However,
netlbl_conn_setattr() does not check if the address family matches
the socket.
The syzkaller must have called connect() for an IPv6 address on
an IPv4 socket.
We have a proper validation in tcp_v[46]_connect(), but
security_socket_connect() is called in the earlier stage.
Let's copy the validation to netlbl_conn_setattr().
[0]:
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 2 UID: 0 PID: 12928 Comm: syz.9.1677 Not tainted 6.12.0 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:txopt_get include/net/ipv6.h:390 [inline]
RIP: 0010:
Code: 02 00 00 49 8b ac 24 f8 02 00 00 e8 84 69 2a fd e8 ff 00 16 fd 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 53 02 00 00 48 8b 6d 70 48 85 ed 0f 84 ab 01 00
RSP: 0018:ffff88811b8afc48 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: 1ffff11023715f8a RCX: ffffffff841ab00c
RDX: 000000000000000e RSI: ffffc90007d9e000 RDI: 0000000000000070
RBP: 0000000000000000 R08: ffffed1023715f9d R09: ffffed1023715f9e
R10: ffffed1023715f9d R11: 0000000000000003 R12: ffff888123075f00
R13: ffff88810245bd80 R14: ffff888113646780 R15: ffff888100578a80
FS: 00007f9019bd7640(0000) GS:ffff8882d2d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f901b927bac CR3: 0000000104788003 CR4: 0000000000770ef0
PKRU: 80000000
Call Trace:
<TASK>
calipso_sock_setattr+0x56/0x80 net/netlabel/netlabel_calipso.c:557
netlbl_conn_setattr+0x10c/0x280 net/netlabel/netlabel_kapi.c:1177
selinux_netlbl_socket_connect_helper+0xd3/0x1b0 security/selinux/netlabel.c:569
selinux_netlbl_socket_connect_locked security/selinux/netlabel.c:597 [inline]
selinux_netlbl_socket_connect+0xb6/0x100 security/selinux/netlabel.c:615
selinux_socket_connect+0x5f/0x80 security/selinux/hooks.c:4931
security_socket_connect+0x50/0xa0 security/security.c:4598
__sys_connect_file+0xa4/0x190 net/socket.c:2067
__sys_connect+0x12c/0x170 net/socket.c:2088
__do_sys_connect net/socket.c:2098 [inline]
__se_sys_connect net/socket.c:2095 [inline]
__x64_sys_connect+0x73/0xb0 net/socket.c:2095
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xaa/0x1b0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f901b61a12d
Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9019bd6fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f901b925fa0 RCX: 00007f901b61a12d
RDX: 000000000000001c RSI: 0000200000000140 RDI: 0000000000000003
RBP: 00007f901b701505 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f901b5b62a0 R15: 00007f9019bb7000
</TASK>
Modules linked in:
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| ► | Linux | Linux |
Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a Version: ceba1832b1b2da0149c51de62a847c00bca1677a |
|
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netlabel/netlabel_kapi.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "fc2da88411470480b8b7e9177e930cedd893cf56",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "0c813dbc851dbf418fdc6dc883fd0592d6c555cd",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "26ce90f1ce60b0ff587de8d6aec399aa55cab28e",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "c32ebe33626335a536dbbdd09571c06dd9bc1729",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "946bfdfcb76ac2bac5b8526447035885ff41c598",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "dd8928897594931d6912ef2f7a43e110b4958d3d",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "e2ec310c7a50271843c585e27ef14e48c66ce649",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
},
{
"lessThan": "6e9f2df1c550ead7cecb3e450af1105735020c92",
"status": "affected",
"version": "ceba1832b1b2da0149c51de62a847c00bca1677a",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netlabel/netlabel_kapi.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"lessThan": "4.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.295",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.239",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.34",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.15.*",
"status": "unaffected",
"version": "6.15.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.295",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.239",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.186",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.142",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.94",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.34",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15.3",
"versionStartIncluding": "4.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.16",
"versionStartIncluding": "4.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncalipso: Don\u0027t call calipso functions for AF_INET sk.\n\nsyzkaller reported a null-ptr-deref in txopt_get(). [0]\n\nThe offset 0x70 was of struct ipv6_txoptions in struct ipv6_pinfo,\nso struct ipv6_pinfo was NULL there.\n\nHowever, this never happens for IPv6 sockets as inet_sk(sk)-\u003epinet6\nis always set in inet6_create(), meaning the socket was not IPv6 one.\n\nThe root cause is missing validation in netlbl_conn_setattr().\n\nnetlbl_conn_setattr() switches branches based on struct\nsockaddr.sa_family, which is passed from userspace. However,\nnetlbl_conn_setattr() does not check if the address family matches\nthe socket.\n\nThe syzkaller must have called connect() for an IPv6 address on\nan IPv4 socket.\n\nWe have a proper validation in tcp_v[46]_connect(), but\nsecurity_socket_connect() is called in the earlier stage.\n\nLet\u0027s copy the validation to netlbl_conn_setattr().\n\n[0]:\nOops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\nCPU: 2 UID: 0 PID: 12928 Comm: syz.9.1677 Not tainted 6.12.0 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nRIP: 0010:txopt_get include/net/ipv6.h:390 [inline]\nRIP: 0010:\nCode: 02 00 00 49 8b ac 24 f8 02 00 00 e8 84 69 2a fd e8 ff 00 16 fd 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 53 02 00 00 48 8b 6d 70 48 85 ed 0f 84 ab 01 00\nRSP: 0018:ffff88811b8afc48 EFLAGS: 00010212\nRAX: dffffc0000000000 RBX: 1ffff11023715f8a RCX: ffffffff841ab00c\nRDX: 000000000000000e RSI: ffffc90007d9e000 RDI: 0000000000000070\nRBP: 0000000000000000 R08: ffffed1023715f9d R09: ffffed1023715f9e\nR10: ffffed1023715f9d R11: 0000000000000003 R12: ffff888123075f00\nR13: ffff88810245bd80 R14: ffff888113646780 R15: ffff888100578a80\nFS: 00007f9019bd7640(0000) GS:ffff8882d2d00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f901b927bac CR3: 0000000104788003 CR4: 0000000000770ef0\nPKRU: 80000000\nCall Trace:\n \u003cTASK\u003e\n calipso_sock_setattr+0x56/0x80 net/netlabel/netlabel_calipso.c:557\n netlbl_conn_setattr+0x10c/0x280 net/netlabel/netlabel_kapi.c:1177\n selinux_netlbl_socket_connect_helper+0xd3/0x1b0 security/selinux/netlabel.c:569\n selinux_netlbl_socket_connect_locked security/selinux/netlabel.c:597 [inline]\n selinux_netlbl_socket_connect+0xb6/0x100 security/selinux/netlabel.c:615\n selinux_socket_connect+0x5f/0x80 security/selinux/hooks.c:4931\n security_socket_connect+0x50/0xa0 security/security.c:4598\n __sys_connect_file+0xa4/0x190 net/socket.c:2067\n __sys_connect+0x12c/0x170 net/socket.c:2088\n __do_sys_connect net/socket.c:2098 [inline]\n __se_sys_connect net/socket.c:2095 [inline]\n __x64_sys_connect+0x73/0xb0 net/socket.c:2095\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xaa/0x1b0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f901b61a12d\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f9019bd6fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a\nRAX: ffffffffffffffda RBX: 00007f901b925fa0 RCX: 00007f901b61a12d\nRDX: 000000000000001c RSI: 0000200000000140 RDI: 0000000000000003\nRBP: 00007f901b701505 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000000 R14: 00007f901b5b62a0 R15: 00007f9019bb7000\n \u003c/TASK\u003e\nModules linked in:"
}
],
"providerMetadata": {
"dateUpdated": "2025-07-28T04:13:34.888Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/fc2da88411470480b8b7e9177e930cedd893cf56"
},
{
"url": "https://git.kernel.org/stable/c/0c813dbc851dbf418fdc6dc883fd0592d6c555cd"
},
{
"url": "https://git.kernel.org/stable/c/26ce90f1ce60b0ff587de8d6aec399aa55cab28e"
},
{
"url": "https://git.kernel.org/stable/c/c32ebe33626335a536dbbdd09571c06dd9bc1729"
},
{
"url": "https://git.kernel.org/stable/c/946bfdfcb76ac2bac5b8526447035885ff41c598"
},
{
"url": "https://git.kernel.org/stable/c/dd8928897594931d6912ef2f7a43e110b4958d3d"
},
{
"url": "https://git.kernel.org/stable/c/e2ec310c7a50271843c585e27ef14e48c66ce649"
},
{
"url": "https://git.kernel.org/stable/c/6e9f2df1c550ead7cecb3e450af1105735020c92"
}
],
"title": "calipso: Don\u0027t call calipso functions for AF_INET sk.",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-38147",
"datePublished": "2025-07-03T08:35:52.921Z",
"dateReserved": "2025-04-16T04:51:23.988Z",
"dateUpdated": "2025-07-28T04:13:34.888Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-38147\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T09:15:29.557\",\"lastModified\":\"2025-07-03T15:13:53.147\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncalipso: Don\u0027t call calipso functions for AF_INET sk.\\n\\nsyzkaller reported a null-ptr-deref in txopt_get(). [0]\\n\\nThe offset 0x70 was of struct ipv6_txoptions in struct ipv6_pinfo,\\nso struct ipv6_pinfo was NULL there.\\n\\nHowever, this never happens for IPv6 sockets as inet_sk(sk)-\u003epinet6\\nis always set in inet6_create(), meaning the socket was not IPv6 one.\\n\\nThe root cause is missing validation in netlbl_conn_setattr().\\n\\nnetlbl_conn_setattr() switches branches based on struct\\nsockaddr.sa_family, which is passed from userspace. However,\\nnetlbl_conn_setattr() does not check if the address family matches\\nthe socket.\\n\\nThe syzkaller must have called connect() for an IPv6 address on\\nan IPv4 socket.\\n\\nWe have a proper validation in tcp_v[46]_connect(), but\\nsecurity_socket_connect() is called in the earlier stage.\\n\\nLet\u0027s copy the validation to netlbl_conn_setattr().\\n\\n[0]:\\nOops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN NOPTI\\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\\nCPU: 2 UID: 0 PID: 12928 Comm: syz.9.1677 Not tainted 6.12.0 #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\\nRIP: 0010:txopt_get include/net/ipv6.h:390 [inline]\\nRIP: 0010:\\nCode: 02 00 00 49 8b ac 24 f8 02 00 00 e8 84 69 2a fd e8 ff 00 16 fd 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 53 02 00 00 48 8b 6d 70 48 85 ed 0f 84 ab 01 00\\nRSP: 0018:ffff88811b8afc48 EFLAGS: 00010212\\nRAX: dffffc0000000000 RBX: 1ffff11023715f8a RCX: ffffffff841ab00c\\nRDX: 000000000000000e RSI: ffffc90007d9e000 RDI: 0000000000000070\\nRBP: 0000000000000000 R08: ffffed1023715f9d R09: ffffed1023715f9e\\nR10: ffffed1023715f9d R11: 0000000000000003 R12: ffff888123075f00\\nR13: ffff88810245bd80 R14: ffff888113646780 R15: ffff888100578a80\\nFS: 00007f9019bd7640(0000) GS:ffff8882d2d00000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 00007f901b927bac CR3: 0000000104788003 CR4: 0000000000770ef0\\nPKRU: 80000000\\nCall Trace:\\n \u003cTASK\u003e\\n calipso_sock_setattr+0x56/0x80 net/netlabel/netlabel_calipso.c:557\\n netlbl_conn_setattr+0x10c/0x280 net/netlabel/netlabel_kapi.c:1177\\n selinux_netlbl_socket_connect_helper+0xd3/0x1b0 security/selinux/netlabel.c:569\\n selinux_netlbl_socket_connect_locked security/selinux/netlabel.c:597 [inline]\\n selinux_netlbl_socket_connect+0xb6/0x100 security/selinux/netlabel.c:615\\n selinux_socket_connect+0x5f/0x80 security/selinux/hooks.c:4931\\n security_socket_connect+0x50/0xa0 security/security.c:4598\\n __sys_connect_file+0xa4/0x190 net/socket.c:2067\\n __sys_connect+0x12c/0x170 net/socket.c:2088\\n __do_sys_connect net/socket.c:2098 [inline]\\n __se_sys_connect net/socket.c:2095 [inline]\\n __x64_sys_connect+0x73/0xb0 net/socket.c:2095\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xaa/0x1b0 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f901b61a12d\\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007f9019bd6fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a\\nRAX: ffffffffffffffda RBX: 00007f901b925fa0 RCX: 00007f901b61a12d\\nRDX: 000000000000001c RSI: 0000200000000140 RDI: 0000000000000003\\nRBP: 00007f901b701505 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 0000000000000000 R14: 00007f901b5b62a0 R15: 00007f9019bb7000\\n \u003c/TASK\u003e\\nModules linked in:\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: calipso: No llamar a funciones calipso para AF_INET sk. syzkaller report\u00f3 una referencia nula en txopt_get(). [0] El desplazamiento 0x70 correspond\u00eda a struct ipv6_txoptions en struct ipv6_pinfo, por lo que struct ipv6_pinfo era nulo. Sin embargo, esto nunca ocurre con sockets IPv6, ya que inet_sk(sk)-\u0026gt;pinet6 siempre se configura en inet6_create(), lo que significa que el socket no era IPv6. La causa principal es la falta de validaci\u00f3n en netlbl_conn_setattr(). netlbl_conn_setattr() cambia de rama seg\u00fan struct sockaddr.sa_family, que se pasa desde el espacio de usuario. Sin embargo, netlbl_conn_setattr() no comprueba si la familia de direcciones coincide con el socket. El syzkaller debe haber llamado a connect() para una direcci\u00f3n IPv6 en un socket IPv4. Tenemos una validaci\u00f3n correcta en tcp_v[46]_connect(), pero security_socket_connect() se llama en la etapa anterior. Copiemos la validaci\u00f3n a netlbl_conn_setattr(). [0]: Ups: fallo de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 2 UID: 0 PID: 12928 Comm: syz.9.1677 Not tainted 6.12.0 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:txopt_get include/net/ipv6.h:390 [inline] RIP: 0010: Code: 02 00 00 49 8b ac 24 f8 02 00 00 e8 84 69 2a fd e8 ff 00 16 fd 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;80\u0026gt; 3c 02 00 0f 85 53 02 00 00 48 8b 6d 70 48 85 ed 0f 84 ab 01 00 RSP: 0018:ffff88811b8afc48 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: 1ffff11023715f8a RCX: ffffffff841ab00c RDX: 000000000000000e RSI: ffffc90007d9e000 RDI: 0000000000000070 RBP: 0000000000000000 R08: ffffed1023715f9d R09: ffffed1023715f9e R10: ffffed1023715f9d R11: 0000000000000003 R12: ffff888123075f00 R13: ffff88810245bd80 R14: ffff888113646780 R15: ffff888100578a80 FS: 00007f9019bd7640(0000) GS:ffff8882d2d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f901b927bac CR3: 0000000104788003 CR4: 0000000000770ef0 PKRU: 80000000 Call Trace: calipso_sock_setattr+0x56/0x80 net/netlabel/netlabel_calipso.c:557 netlbl_conn_setattr+0x10c/0x280 net/netlabel/netlabel_kapi.c:1177 selinux_netlbl_socket_connect_helper+0xd3/0x1b0 security/selinux/netlabel.c:569 selinux_netlbl_socket_connect_locked security/selinux/netlabel.c:597 [inline] selinux_netlbl_socket_connect+0xb6/0x100 security/selinux/netlabel.c:615 selinux_socket_connect+0x5f/0x80 security/selinux/hooks.c:4931 security_socket_connect+0x50/0xa0 security/security.c:4598 __sys_connect_file+0xa4/0x190 net/socket.c:2067 __sys_connect+0x12c/0x170 net/socket.c:2088 __do_sys_connect net/socket.c:2098 [inline] __se_sys_connect net/socket.c:2095 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:2095 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xaa/0x1b0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f901b61a12d Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9019bd6fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f901b925fa0 RCX: 00007f901b61a12d RDX: 000000000000001c RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007f901b701505 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f901b5b62a0 R15: 00007f9019bb7000 M\u00f3dulos vinculados en:\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c813dbc851dbf418fdc6dc883fd0592d6c555cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/26ce90f1ce60b0ff587de8d6aec399aa55cab28e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6e9f2df1c550ead7cecb3e450af1105735020c92\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/946bfdfcb76ac2bac5b8526447035885ff41c598\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c32ebe33626335a536dbbdd09571c06dd9bc1729\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd8928897594931d6912ef2f7a43e110b4958d3d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e2ec310c7a50271843c585e27ef14e48c66ce649\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fc2da88411470480b8b7e9177e930cedd893cf56\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…