CVE-2026-99115: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fill in FileSysIdentifier in FS_POSIX_INFORMATION smb2_get_info_filesystem() reports 56 bytes for FS_POSIX_INFORMATION, that is the whole of FILE_SYSTEM_POSIX_INFO, but never assigns FileSysIdentifier. Those eight bytes go to the client as they are found in the response buffer. The buffer is zeroed on allocation, so a standalone request leaks nothing. A compound request can leak: the offset of the next response is advanced by the length pinned for the previous one, so a reply that was written into the buffer and then dropped in favour of the short error response of smb2_set_err_rsp() stays there, and the next reply is laid over it with only the header cleared. Report the file system id statfs() returned, which is what the field is for. FileSysIdentifier is __le64 and f_fsid is a pair of ints, so assemble the value first, val[0] as the low half, and convert it on the way out.

Засегнати продукти

• Linux Linux: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди cb9fbcaf1f3351bea771eec557fc6c4d2f35762b; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 1d644ab9eac767d52c9b8dc0eb68c0085994d9b6; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди da2ec27fdd7effbe4c94ec15b6c6a281800c5123; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди f5c50f69a70fe22c44a50c869c8cd65fc35a0686; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди beba2ef6f66a71f20531ac70a1acb0b221e362e9; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди ab057f271ef60ff8163818badc3de75c480eca07; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди db2267b27c054a6c2151ff7fbb67927e784f31d6
• Linux Linux: 5.15; преди 5.15; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-99115
• https://nvd.nist.gov/vuln/detail/CVE-2026-99115
• https://git.kernel.org/stable/c/cb9fbcaf1f3351bea771eec557fc6c4d2f35762b
• https://git.kernel.org/stable/c/1d644ab9eac767d52c9b8dc0eb68c0085994d9b6
• https://git.kernel.org/stable/c/da2ec27fdd7effbe4c94ec15b6c6a281800c5123
• https://git.kernel.org/stable/c/f5c50f69a70fe22c44a50c869c8cd65fc35a0686
• https://git.kernel.org/stable/c/beba2ef6f66a71f20531ac70a1acb0b221e362e9
• https://git.kernel.org/stable/c/ab057f271ef60ff8163818badc3de75c480eca07
• https://git.kernel.org/stable/c/db2267b27c054a6c2151ff7fbb67927e784f31d6