CVE-2024-43846 Affecting kernel-uek-devel package, versions <0:5.4.17-2136.336.5.1.el7uek
Threat Intelligence
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Test your applications- Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-8185616
- published15 Oct 2024
- disclosed17 Aug 2024
Introduced: 17 Aug 2024
CVE-2024-43846 (opens in a new tab)How to fix?
Upgrade Oracle:7 kernel-uek-devel to version 0:5.4.17-2136.336.5.1.el7uek or higher.
This issue was patched in ELSA-2024-12780.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle.
See How to fix? for Oracle:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
lib: objagg: Fix general protection fault
The library supports aggregation of objects into other objects only if the parent object does not have a parent itself. That is, nesting is not supported.
Aggregation happens in two cases: Without and with hints, where hints are a pre-computed recommendation on how to aggregate the provided objects.
Nesting is not possible in the first case due to a check that prevents it, but in the second case there is no check because the assumption is that nesting cannot happen when creating objects based on hints. The violation of this assumption leads to various warnings and eventually to a general protection fault [1].
Before fixing the root cause, error out when nesting happens and warn.
[1] general protection fault, probably for non-canonical address 0xdead000000000d90: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 1083 Comm: kworker/1:9 Tainted: G W 6.9.0-rc6-custom-gd9b4f1cca7fb #7 Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019 Workqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work RIP: 0010:mlxsw_sp_acl_erp_bf_insert+0x25/0x80 [...] Call Trace: <TASK> mlxsw_sp_acl_atcam_entry_add+0x256/0x3c0 mlxsw_sp_acl_tcam_entry_create+0x5e/0xa0 mlxsw_sp_acl_tcam_vchunk_migrate_one+0x16b/0x270 mlxsw_sp_acl_tcam_vregion_rehash_work+0xbe/0x510 process_one_work+0x151/0x370 worker_thread+0x2cb/0x3e0 kthread+0xd0/0x100 ret_from_fork+0x34/0x50 ret_from_fork_asm+0x1a/0x30 </TASK>
References
- https://linux.oracle.com/cve/CVE-2024-43846.html
- https://linux.oracle.com/errata/ELSA-2024-12780.html
- https://linux.oracle.com/errata/ELSA-2024-12815.html
- https://git.kernel.org/stable/c/1936fa05a180834c3b52e0439a6bddc07814d3eb
- https://git.kernel.org/stable/c/22ae17a267f4812861f0c644186c3421ff97dbfc
- https://git.kernel.org/stable/c/499f742fed42e74f1321f4b12ca196a66a2b49fc
- https://git.kernel.org/stable/c/565213e005557eb6cc4e42189d26eb300e02f170
- https://git.kernel.org/stable/c/5adc61d29bbb461d7f7c2b48dceaa90ecd182eb7
- https://git.kernel.org/stable/c/8161263362154cbebfbf4808097b956a6a8cb98a
- https://git.kernel.org/stable/c/b4a3a89fffcdf09702b1f161b914e52abca1894d