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CVE-2022-34918
Published: Jul 4, 2022
Modified: Aug 3, 2024
PUBLISHED
Description
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://www.openwall.com/lists/oss-security/2022/07/02/3
x_refsource_MISC
[oss-security] 20220705 Re: Linux kernel: Netfilter heap buffer overflow in nft_set_elem_init
mailing-list
x_refsource_MLIST
https://www.randorisec.fr/crack-linux-firewall/
x_refsource_MISC
DSA-5191
vendor-advisory
x_refsource_DEBIAN
[oss-security] 20220806 Re: Linux kernel: Netfilter heap buffer overflow in nft_set_elem_init
mailing-list
x_refsource_MLIST
https://security.netapp.com/advisory/ntap-20220826-0004/
x_refsource_CONFIRM
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