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Vulnerability Change Records for CVE-2024-26849

Change History

New CVE Received by NIST 4/17/2024 7:15:08 AM

Action Type Old Value New Value
Added Description

								
							
							
						
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.
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/0ac219c4c3ab253f3981f346903458d20bacab32 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/7a9d14c63b35f89563c5ecbadf918ad64979712d [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/9a0d18853c280f6a0ee99f91619f2442a17a323a [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/a2ab028151841cd833cb53eb99427e0cc990112d [No types assigned]