CVE-2022-50749
Published Dec 24, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: acct: fix potential integer overflow in encode_comp_t() The integer overflow is descripted with following codes: > 317 static comp_t encode_comp_t(u64 value) > 318 { > 319 int exp, rnd; ...... > 341 exp <<= MANTSIZE; > 342 exp += value; > 343 return exp; > 344 } Currently comp_t is defined as type of '__u16', but the variable 'exp' is type of 'int', so overflow would happen when variable 'exp' in line 343 is greater than 65535.
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References
Other References
https://git.kernel.org/stable/c/0aac6e60c464a5f942f995428e67f8ae1c422250
https://git.kernel.org/stable/c/1750a0983c455a9b3badd848471fc8d58cb61f67
https://git.kernel.org/stable/c/2224897d8187dc22a83e05d9361efcccf67bcf12
https://git.kernel.org/stable/c/6edd0cdee5780fd5f43356b72b29a2a6d48ef6da
https://git.kernel.org/stable/c/a815a3e019456c94b03bd183e7ac22fd29e9e6fd
https://git.kernel.org/stable/c/c5f31c655bcc01b6da53b836ac951c1556245305
https://git.kernel.org/stable/c/cf60bbca1b83a7e0927e36dbf178328982927886
https://git.kernel.org/stable/c/e93f995a591c352d35d89c518c54f790e1537754
https://git.kernel.org/stable/c/ebe16676e1dcaa4556ec4d36ca40c82e99e88cfa
Frequently Asked Questions
What is CVE-2022-50749? +
In the Linux kernel, the following vulnerability has been resolved:
acct: fix potential integer overflow in encode_comp_t()
The integer overflow is descripted with following codes:
> 317 static comp_t encode_comp_t(u64 value)
> 318 {
> 319 int exp, rnd;
......
> 341 exp <<= MANTSIZE;
> 342 exp += value;
> 343 return exp;
> 344 }
Currently comp_t is defined as type of '__u16', but the variable 'exp' is
type of 'int', so overflow would happen when variable 'exp' in line 343 is
greater than 65535.
How do I check if I'm vulnerable to CVE-2022-50749? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.