Name | CVE-2017-5551 |
Description | The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
References | DSA-3791-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|
linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.106-3 | fixed |
| bookworm (security) | 6.1.112-1 | fixed |
| trixie | 6.11.4-1 | fixed |
| sid | 6.11.5-1 | fixed |
The information below is based on the following data on fixed versions.
Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
---|
linux | source | wheezy | 3.2.84-1 | | | |
linux | source | jessie | 3.16.39-1+deb8u1 | | DSA-3791-1 | |
linux | source | (unstable) | 4.9.6-1 | | | |
Notes
Backported fix for CVE-2016-7097 already covered this CVE for wheezy
Fixed by: https://git.kernel.org/linus/497de07d89c1410d76a15bec2bb41f24a2a89f31 (4.10-rc4)