CVE-2022-50749

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e93f995a591c352d35d89c518c54f790e1537754affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cf60bbca1b83a7e0927e36dbf178328982927886affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1750a0983c455a9b3badd848471fc8d58cb61f67affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a815a3e019456c94b03bd183e7ac22fd29e9e6fdaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6edd0cdee5780fd5f43356b72b29a2a6d48ef6daaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ebe16676e1dcaa4556ec4d36ca40c82e99e88cfaaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2224897d8187dc22a83e05d9361efcccf67bcf12affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0aac6e60c464a5f942f995428e67f8ae1c422250affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c5f31c655bcc01b6da53b836ac951c1556245305affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References