Release Date: | 2024-07-12 |
In the Linux kernel, the following vulnerability has been resolved:\ntipc: force a dst refcount before doing decryption\nAs it says in commit 3bc07321ccc2 ('xfrm: Force a dst refcount before\nentering the xfrm type handlers'):\n'Crypto requests might return asynchronous. In this case we leave the\nrcu protected region, so force a refcount on the skb's destination\nentry before we enter the xfrm type input/output handlers.'\nOn TIPC decryption path it has the same problem, and skb_dst_force()\nshould be called before doing decryption to avoid a possible crash.\nShuang reported this issue when this warning is triggered:\n[] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc]\n[] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug\n[] Workqueue: crypto cryptd_queue_worker\n[] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc]\n[] Call Trace:\n[] tipc_sk_mcast_rcv+0x548/0xea0 [tipc]\n[] tipc_rcv+0xcf5/0x1060 [tipc]\n[] tipc_aead_decrypt_done+0x215/0x2e0 [tipc]\n[] cryptd_aead_crypt+0xdb/0x190\n[] cryptd_queue_worker+0xed/0x190\n[] process_one_work+0x93d/0x17e0
See more information about CVE-2024-40983 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.
Base Score: | 5.5 | CVSS Vector: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Attack Vector: | Local network | Attack Complexity: | Low |
Privileges Required: | Low | User Interaction: | None |
Scope: | Unchanged | Confidentiality Impact: | None |
Integrity Impact: | None | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 8 (kernel-uek) | ELSA-2024-12618 | 2024-09-12 |
Oracle Linux version 9 (kernel) | ELSA-2024-5928 | 2024-08-28 |
Oracle Linux version 9 (kernel-uek) | ELSA-2024-12618 | 2024-09-12 |
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