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CVE-2023-1095

Good to know:

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Date: February 27, 2023

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.

Language: C

Severity Score

Related Resources (7)

https://people.canonical.com/~ubuntu-security/cve/CVE-2023-1095
https://bugzilla.redhat.com/show_bug.cgi?id=2173973
https://github.com/torvalds/linux/commit/580077855a40741cf511766129702d97ff02f4d9
https://security-tracker.debian.org/tracker/CVE-2023-1095
https://nvd.nist.gov/vuln/detail/CVE-2023-1095
https://access.redhat.com/security/cve/CVE-2023-1095
https://www.mend.io/vulnerability-database/CVE-2023-1095

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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