Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: terminate the cached volume label after UTF-8 conversion ntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s() and stores the result in sbi->volume.label. The converted label is later exposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only returns the number of bytes written and does not add a trailing NUL. If the converted label fills the entire fixed buffer, ntfs3_label_show() can read past the end of sbi->volume.label while looking for a terminator. Terminate the cached label explicitly after a successful conversion and clamp the exact-full case to the last byte of the buffer.
Affected products
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – 32b0686369e0afbb3549a0d93e2d8517da84cd30
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – 0b11fcbe80a59acdf58337d80ebb5f72201d73d6
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – 54d564b762389679e2f8fb9eeb20af7e82371e1c
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – 6136bbb054f7ab9f51ae99915541633b18bcef90
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – 5cd0707b81cb4589f00aec5c4c1288bd0980d2a4
- Linux / Linux82cae269cfa953032fbb8980a7d554d60fb00b17 – a6cd43fe9b083fa23fe1595666d5738856cb261a
- Linux / Linux5.15 – 5.15
- Linux / Linux0 – 5.15
- Linux / Linux5.15.209 – 5.15.*
- Linux / Linux6.1.175 – 6.1.*
- Linux / Linux6.6.141 – 6.6.*
- Linux / Linux6.12.91 – 6.12.*
- Linux / Linux6.18.33 – 6.18.*
- Linux / Linux7.0.10 – 7.0.*
- Linux / Linux7.1 – *
References
- MISChttps://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30
- MISChttps://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed
- MISChttps://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6
- MISChttps://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c
- MISChttps://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90
- MISChttps://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4
- MISChttps://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a