CVE-2025-38018

net/tls: fix kernel panic when alloc_page failed

Description

In the Linux kernel, the following vulnerability has been resolved: net/tls: fix kernel panic when alloc_page failed We cannot set frag_list to NULL pointer when alloc_page failed. It will be used in tls_strp_check_queue_ok when the next time tls_strp_read_sock is called. This is because we don't reset full_len in tls_strp_flush_anchor_copy() so the recv path will try to continue handling the partial record on the next call but we dettached the rcvq from the frag list. Alternative fix would be to reset full_len. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028 Call trace: tls_strp_check_rcv+0x128/0x27c tls_strp_data_ready+0x34/0x44 tls_data_ready+0x3c/0x1f0 tcp_data_ready+0x9c/0xe4 tcp_data_queue+0xf6c/0x12d0 tcp_rcv_established+0x52c/0x798

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/8f7f96549bc55e4ef3a6b499bc5011e5de2f46c4
https://git.kernel.org/stable/c/406d05da26835943568e61bb751c569efae071d4
https://git.kernel.org/stable/c/a11b8c0be6acd0505a58ff40d474bd778b25b93a
https://git.kernel.org/stable/c/5f1f833cb388592bb46104463a1ec1b7c41975b6
https://git.kernel.org/stable/c/491deb9b8c4ad12fe51d554a69b8165b9ef9429f

Frequently Asked Questions

What is the severity of CVE-2025-38018?: CVE-2025-38018 has not yet been assigned a CVSS score.
How to fix CVE-2025-38018?: To fix CVE-2025-38018, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38018 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38018 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38018?: CVE-2025-38018 affects Linux Linux, Linux Linux.

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