CVE-2024-26849
netlink: add nla be16/32 types to minlen array
In the Linux kernel, the following vulnerability has been resolved:
netlink: add nla be16/32 types to minlen array
BUG: KMSAN: uninit-value in nla_validate_range_unsigned lib/nlattr.c:222 [inline]
BUG: KMSAN: uninit-value in nla_validate_int_range lib/nlattr.c:336 [inline]
BUG: KMSAN: uninit-value in validate_nla lib/nlattr.c:575 [inline]
BUG: KMSAN: uninit-value in __nla_validate_parse+0x2e20/0x45c0 lib/nlattr.c:631
nla_validate_range_unsigned lib/nlattr.c:222 [inline]
nla_validate_int_range lib/nlattr.c:336 [inline]
validate_nla lib/nlattr.c:575 [inline]
...
The message in question matches this policy:
[NFTA_TARGET_REV] = NLA_POLICY_MAX(NLA_BE32, 255),
but because NLA_BE32 size in minlen array is 0, the validation
code will read past the malformed (too small) attribute.
Note: Other attributes, e.g. BITFIELD32, SINT, UINT.. are also missing:
those likely should be added too.
Productos afectados
Linux · Linux¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://git.kernel.org/stable/c/000a68159c0326b46c42ec712ab98793e7e625a7https://git.kernel.org/stable/c/0ac219c4c3ab253f3981f346903458d20bacab32https://git.kernel.org/stable/c/7a9d14c63b35f89563c5ecbadf918ad64979712dhttps://git.kernel.org/stable/c/80b40f9cb87f3bf5877dfb852765cf92bc03ca77https://git.kernel.org/stable/c/9a0d18853c280f6a0ee99f91619f2442a17a323ahttps://git.kernel.org/stable/c/a2ab028151841cd833cb53eb99427e0cc990112d