- Vulnerability/
- CVE-2024-53233
CVE-2024-53233: unicode: Fix utf8_load() error path
First published: Fri Dec 27 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 | |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/156bb2c569cd869583c593d27a5bd69e7b2a4264
- https://git.kernel.org/stable/c/4387cef540f36c2c9297460758cc2438305a24a0
- https://git.kernel.org/stable/c/6504dd27123966dc455494cb55217c04ca479121
- https://git.kernel.org/stable/c/89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3
- https://git.kernel.org/stable/c/c4b6c1781f6cc4e2283120ac8d873864b8056f21
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53233
- https://nvd.nist.gov/vuln/detail/CVE-2024-53233
- https://launchpad.net/bugs/cve/CVE-2024-53233
- https://security-tracker.debian.org/tracker/CVE-2024-53233
- https://ubuntu.com/security/CVE-2024-53233
- https://git.kernel.org/linus/156bb2c569cd869583c593d27a5bd69e7b2a4264
Frequently Asked Questions
What is the severity of CVE-2024-53233?
CVE-2024-53233 has a medium severity rating, as it impacts the handling of unsupported UTF-8 versions in the Linux kernel.
How do I fix CVE-2024-53233?
To fix CVE-2024-53233, update to the patched versions of the Linux kernel, specifically 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.15-1.
Which Linux kernel versions are affected by CVE-2024-53233?
CVE-2024-53233 affects various versions of the Linux kernel prior to the specified patched releases.
What components are involved in CVE-2024-53233?
CVE-2024-53233 involves the unicode handling within the Linux kernel, particularly the utf8_load() function.
Is CVE-2024-53233 exploitable remotely?
CVE-2024-53233 does not appear to be directly exploitable remotely, but could lead to potential local attacks if not mitigated.
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