NULL Pointer Dereference Affecting kernel-debug package, versions <0:4.18.0-553.8.1.el8_10
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUG-7043672
- published 23 May 2024
- disclosed 21 May 2024
Introduced: 21 May 2024
CVE-2023-52877 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug to version 0:4.18.0-553.8.1.el8_10 or higher.
This issue was patched in RHSA-2024:4211.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()
It is possible that typec_register_partner() returns ERR_PTR on failure. When port->partner is an error, a NULL pointer dereference may occur as shown below.
[91222.095236][ T319] typec port0: failed to register partner (-17) ... [91225.061491][ T319] Unable to handle kernel NULL pointer dereference at virtual address 000000000000039f [91225.274642][ T319] pc : tcpm_pd_data_request+0x310/0x13fc [91225.274646][ T319] lr : tcpm_pd_data_request+0x298/0x13fc [91225.308067][ T319] Call trace: [91225.308070][ T319] tcpm_pd_data_request+0x310/0x13fc [91225.308073][ T319] tcpm_pd_rx_handler+0x100/0x9e8 [91225.355900][ T319] kthread_worker_fn+0x178/0x58c [91225.355902][ T319] kthread+0x150/0x200 [91225.355905][ T319] ret_from_fork+0x10/0x30
Add a check for port->partner to avoid dereferencing a NULL pointer.
References
- https://access.redhat.com/security/cve/CVE-2023-52877
- https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b
- https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08
- https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b
- https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac
- https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc