CVE-2024-53233

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2b3d047870120bcd46d7cc257d19ff49328fd585 < 4387cef540f36c2c9297460758cc2438305a24a0affected
LinuxLinux2b3d047870120bcd46d7cc257d19ff49328fd585 < c4b6c1781f6cc4e2283120ac8d873864b8056f21affected
LinuxLinux2b3d047870120bcd46d7cc257d19ff49328fd585 < 6504dd27123966dc455494cb55217c04ca479121affected
LinuxLinux2b3d047870120bcd46d7cc257d19ff49328fd585 < 89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3affected
LinuxLinux2b3d047870120bcd46d7cc257d19ff49328fd585 < 156bb2c569cd869583c593d27a5bd69e7b2a4264affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.120 <= 6.1.*unaffected
LinuxLinux6.6.64 <= 6.6.*unaffected
LinuxLinux6.11.11 <= 6.11.*unaffected
LinuxLinux6.12.2 <= 6.12.*unaffected
LinuxLinux6.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References