CVE-2024-26849 Affecting bpftool package, versions *
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Test your applications- Snyk ID SNYK-CENTOS7-BPFTOOL-6637359
- published 18 Apr 2024
- disclosed 17 Apr 2024
Introduced: 17 Apr 2024
CVE-2024-26849 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 bpftool.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-26849
- https://git.kernel.org/stable/c/0ac219c4c3ab253f3981f346903458d20bacab32
- https://git.kernel.org/stable/c/7a9d14c63b35f89563c5ecbadf918ad64979712d
- https://git.kernel.org/stable/c/9a0d18853c280f6a0ee99f91619f2442a17a323a
- https://git.kernel.org/stable/c/a2ab028151841cd833cb53eb99427e0cc990112d