CVE-2024-53233

unicode: Fix utf8_load() error path

Description

In the Linux kernel, the following vulnerability has been resolved: unicode: Fix utf8_load() error path utf8_load() requests the symbol "utf8_data_table" and then checks if the requested UTF-8 version is supported. If it's unsupported, it tries to put the data table using symbol_put(). If an unsupported version is requested, symbol_put() fails like this: kernel BUG at kernel/module/main.c:786! RIP: 0010:__symbol_put+0x93/0xb0 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? die+0x2e/0x50 ? do_trap+0xca/0x110 ? do_error_trap+0x65/0x80 ? __symbol_put+0x93/0xb0 ? exc_invalid_op+0x51/0x70 ? __symbol_put+0x93/0xb0 ? asm_exc_invalid_op+0x1a/0x20 ? __pfx_cmp_name+0x10/0x10 ? __symbol_put+0x93/0xb0 ? __symbol_put+0x62/0xb0 utf8_load+0xf8/0x150 That happens because symbol_put() expects the unique string that identify the symbol, instead of a pointer to the loaded symbol. Fix that by using such string.

N/A

CVSS

Severity:

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/4387cef540f36c2c9297460758cc2438305a24a0
https://git.kernel.org/stable/c/c4b6c1781f6cc4e2283120ac8d873864b8056f21
https://git.kernel.org/stable/c/6504dd27123966dc455494cb55217c04ca479121
https://git.kernel.org/stable/c/89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3
https://git.kernel.org/stable/c/156bb2c569cd869583c593d27a5bd69e7b2a4264

Frequently Asked Questions

What is the severity of CVE-2024-53233?: CVE-2024-53233 has not yet been assigned a CVSS score.
How to fix CVE-2024-53233?: To fix CVE-2024-53233, 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-2024-53233 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-53233 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-2024-53233?: CVE-2024-53233 affects Linux Linux, Linux Linux.

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