CVE-2023-1095

Summary

In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (2)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=2173973 ↗

Additional information

• NVD record
• https://bugzilla.redhat.com/show_bug.cgi?id=2173973Patch
• https://github.com/torvalds/linux/commit/580077855a40741cf511766129702d97ff02f4d9Patch