From 8d316c3547707d5c743296202101c6f0340455ee Mon Sep 17 00:00:00 2001 From: "campaigner-prod[bot]" <87874424+campaigner-prod[bot]@users.noreply.github.com> Date: Thu, 8 Jan 2026 04:47:30 +0000 Subject: [PATCH] Executing automated changes --- go.mod | 3 +- go.sum | 6 +- .../selinux/go-selinux/label/label_linux.go | 6 +- .../selinux/go-selinux/selinux.go | 10 +- .../selinux/go-selinux/selinux_linux.go | 268 ++++++++++++------ .../selinux/go-selinux/selinux_stub.go | 12 +- vendor/modules.txt | 14 +- 7 files changed, 217 insertions(+), 102 deletions(-) diff --git a/go.mod b/go.mod index 4fb6f63839b18..a33ae4c0a9d08 100644 --- a/go.mod +++ b/go.mod @@ -55,7 +55,7 @@ require ( github.com/opencontainers/image-spec v1.1.1 github.com/opencontainers/runtime-spec v1.2.1 github.com/opencontainers/runtime-tools v0.9.1-0.20221107090550-2e043c6bd626 - github.com/opencontainers/selinux v1.12.0 + github.com/opencontainers/selinux v1.13.1 github.com/pelletier/go-toml/v2 v2.2.4 github.com/prometheus/client_golang v1.23.2 github.com/sirupsen/logrus v1.9.3 @@ -95,6 +95,7 @@ require ( github.com/cilium/ebpf v0.16.0 // indirect github.com/containers/ocicrypt v1.2.1 // indirect github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect + github.com/cyphar/filepath-securejoin v0.5.1 // indirect github.com/felixge/httpsnoop v1.0.4 // indirect github.com/fxamacker/cbor/v2 v2.7.0 // indirect github.com/go-jose/go-jose/v4 v4.1.1 // indirect diff --git a/go.sum b/go.sum index 8be1faef4fa7a..5a55ee233f460 100644 --- a/go.sum +++ b/go.sum @@ -81,6 +81,8 @@ github.com/coreos/go-systemd/v22 v22.6.0 h1:aGVa/v8B7hpb0TKl0MWoAavPDmHvobFe5R5z github.com/coreos/go-systemd/v22 v22.6.0/go.mod h1:iG+pp635Fo7ZmV/j14KUcmEyWF+0X7Lua8rrTWzYgWU= github.com/cpuguy83/go-md2man/v2 v2.0.7 h1:zbFlGlXEAKlwXpmvle3d8Oe3YnkKIK4xSRTd3sHPnBo= github.com/cpuguy83/go-md2man/v2 v2.0.7/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g= +github.com/cyphar/filepath-securejoin v0.5.1 h1:eYgfMq5yryL4fbWfkLpFFy2ukSELzaJOTaUTuh+oF48= +github.com/cyphar/filepath-securejoin v0.5.1/go.mod h1:Sdj7gXlvMcPZsbhwhQ33GguGLDGQL7h7bg04C/+u9jI= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= @@ -263,8 +265,8 @@ github.com/opencontainers/runtime-spec v1.2.1/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/ github.com/opencontainers/runtime-tools v0.9.1-0.20221107090550-2e043c6bd626 h1:DmNGcqH3WDbV5k8OJ+esPWbqUOX5rMLR2PMvziDMJi0= github.com/opencontainers/runtime-tools v0.9.1-0.20221107090550-2e043c6bd626/go.mod h1:BRHJJd0E+cx42OybVYSgUvZmU0B8P9gZuRXlZUP7TKI= github.com/opencontainers/selinux v1.9.1/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuho1lHsJxIJ3gGbJI= -github.com/opencontainers/selinux v1.12.0 h1:6n5JV4Cf+4y0KNXW48TLj5DwfXpvWlxXplUkdTrmPb8= -github.com/opencontainers/selinux v1.12.0/go.mod h1:BTPX+bjVbWGXw7ZZWUbdENt8w0htPSrlgOOysQaU62U= +github.com/opencontainers/selinux v1.13.1 h1:A8nNeceYngH9Ow++M+VVEwJVpdFmrlxsN22F+ISDCJE= +github.com/opencontainers/selinux v1.13.1/go.mod h1:S10WXZ/osk2kWOYKy1x2f/eXF5ZHJoUs8UU/2caNRbg= github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4= github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY= github.com/petermattis/goid v0.0.0-20240813172612-4fcff4a6cae7 h1:Dx7Ovyv/SFnMFw3fD4oEoeorXc6saIiQ23LrGLth0Gw= diff --git a/vendor/github.com/opencontainers/selinux/go-selinux/label/label_linux.go b/vendor/github.com/opencontainers/selinux/go-selinux/label/label_linux.go index 1258c98ce71e7..95f29e21f4e84 100644 --- a/vendor/github.com/opencontainers/selinux/go-selinux/label/label_linux.go +++ b/vendor/github.com/opencontainers/selinux/go-selinux/label/label_linux.go @@ -18,7 +18,7 @@ var validOptions = map[string]bool{ "level": true, } -var ErrIncompatibleLabel = errors.New("Bad SELinux option z and Z can not be used together") +var ErrIncompatibleLabel = errors.New("bad SELinux option: z and Z can not be used together") // InitLabels returns the process label and file labels to be used within // the container. A list of options can be passed into this function to alter @@ -52,11 +52,11 @@ func InitLabels(options []string) (plabel string, mlabel string, retErr error) { return "", selinux.PrivContainerMountLabel(), nil } if i := strings.Index(opt, ":"); i == -1 { - return "", "", fmt.Errorf("Bad label option %q, valid options 'disable' or \n'user, role, level, type, filetype' followed by ':' and a value", opt) + return "", "", fmt.Errorf("bad label option %q, valid options 'disable' or \n'user, role, level, type, filetype' followed by ':' and a value", opt) } con := strings.SplitN(opt, ":", 2) if !validOptions[con[0]] { - return "", "", fmt.Errorf("Bad label option %q, valid options 'disable, user, role, level, type, filetype'", con[0]) + return "", "", fmt.Errorf("bad label option %q, valid options 'disable, user, role, level, type, filetype'", con[0]) } if con[0] == "filetype" { mcon["type"] = con[1] diff --git a/vendor/github.com/opencontainers/selinux/go-selinux/selinux.go b/vendor/github.com/opencontainers/selinux/go-selinux/selinux.go index 9f0740ef6f8a0..15150d4752819 100644 --- a/vendor/github.com/opencontainers/selinux/go-selinux/selinux.go +++ b/vendor/github.com/opencontainers/selinux/go-selinux/selinux.go @@ -153,7 +153,7 @@ func CalculateGlbLub(sourceRange, targetRange string) (string, error) { // of the program is finished to guarantee another goroutine does not migrate to the current // thread before execution is complete. func SetExecLabel(label string) error { - return writeCon(attrPath("exec"), label) + return writeConThreadSelf("attr/exec", label) } // SetTaskLabel sets the SELinux label for the current thread, or an error. @@ -161,7 +161,7 @@ func SetExecLabel(label string) error { // be wrapped in runtime.LockOSThread()/runtime.UnlockOSThread() to guarantee // the current thread does not run in a new mislabeled thread. func SetTaskLabel(label string) error { - return writeCon(attrPath("current"), label) + return writeConThreadSelf("attr/current", label) } // SetSocketLabel takes a process label and tells the kernel to assign the @@ -170,12 +170,12 @@ func SetTaskLabel(label string) error { // the socket is created to guarantee another goroutine does not migrate // to the current thread before execution is complete. func SetSocketLabel(label string) error { - return writeCon(attrPath("sockcreate"), label) + return writeConThreadSelf("attr/sockcreate", label) } // SocketLabel retrieves the current socket label setting func SocketLabel() (string, error) { - return readCon(attrPath("sockcreate")) + return readConThreadSelf("attr/sockcreate") } // PeerLabel retrieves the label of the client on the other side of a socket @@ -198,7 +198,7 @@ func SetKeyLabel(label string) error { // KeyLabel retrieves the current kernel keyring label setting func KeyLabel() (string, error) { - return readCon("/proc/self/attr/keycreate") + return keyLabel() } // Get returns the Context as a string diff --git a/vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go b/vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go index a607980724c6d..6d7f8e270bd73 100644 --- a/vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go +++ b/vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go @@ -17,8 +17,11 @@ import ( "strings" "sync" - "github.com/opencontainers/selinux/pkg/pwalkdir" + "github.com/cyphar/filepath-securejoin/pathrs-lite" + "github.com/cyphar/filepath-securejoin/pathrs-lite/procfs" "golang.org/x/sys/unix" + + "github.com/opencontainers/selinux/pkg/pwalkdir" ) const ( @@ -73,10 +76,6 @@ var ( mcsList: make(map[string]bool), } - // for attrPath() - attrPathOnce sync.Once - haveThreadSelf bool - // for policyRoot() policyRootOnce sync.Once policyRootVal string @@ -256,48 +255,183 @@ func readConfig(target string) string { return "" } -func isProcHandle(fh *os.File) error { - var buf unix.Statfs_t +func readConFd(in *os.File) (string, error) { + data, err := io.ReadAll(in) + if err != nil { + return "", err + } + return string(bytes.TrimSuffix(data, []byte{0})), nil +} - for { - err := unix.Fstatfs(int(fh.Fd()), &buf) - if err == nil { - break - } - if err != unix.EINTR { - return &os.PathError{Op: "fstatfs", Path: fh.Name(), Err: err} - } +func writeConFd(out *os.File, val string) error { + var err error + if val != "" { + _, err = out.Write([]byte(val)) + } else { + _, err = out.Write(nil) } - if buf.Type != unix.PROC_SUPER_MAGIC { - return fmt.Errorf("file %q is not on procfs", fh.Name()) + return err +} + +// openProcThreadSelf is a small wrapper around [procfs.Handle.OpenThreadSelf] +// and [pathrs.Reopen] to make "one-shot opens" slightly more ergonomic. The +// provided mode must be os.O_* flags to indicate what mode the returned file +// should be opened with (flags like os.O_CREAT and os.O_EXCL are not +// supported). +// +// If no error occurred, the returned handle is guaranteed to be exactly +// /proc/thread-self/ with no tricky mounts or symlinks causing you to +// operate on an unexpected path (with some caveats on pre-openat2 or +// pre-fsopen kernels). +func openProcThreadSelf(subpath string, mode int) (*os.File, procfs.ProcThreadSelfCloser, error) { + if subpath == "" { + return nil, nil, ErrEmptyPath } - return nil -} + proc, err := procfs.OpenProcRoot() + if err != nil { + return nil, nil, err + } + defer proc.Close() -func readCon(fpath string) (string, error) { - if fpath == "" { - return "", ErrEmptyPath + handle, closer, err := proc.OpenThreadSelf(subpath) + if err != nil { + return nil, nil, fmt.Errorf("open /proc/thread-self/%s handle: %w", subpath, err) + } + defer handle.Close() // we will return a re-opened handle + + file, err := pathrs.Reopen(handle, mode) + if err != nil { + closer() + return nil, nil, fmt.Errorf("reopen /proc/thread-self/%s handle (%#x): %w", subpath, mode, err) } + return file, closer, nil +} - in, err := os.Open(fpath) +// Read the contents of /proc/thread-self/. +func readConThreadSelf(fpath string) (string, error) { + in, closer, err := openProcThreadSelf(fpath, os.O_RDONLY|unix.O_CLOEXEC) if err != nil { return "", err } + defer closer() defer in.Close() - if err := isProcHandle(in); err != nil { + return readConFd(in) +} + +// Write to /proc/thread-self/. +func writeConThreadSelf(fpath, val string) error { + if val == "" { + if !getEnabled() { + return nil + } + } + + out, closer, err := openProcThreadSelf(fpath, os.O_WRONLY|unix.O_CLOEXEC) + if err != nil { + return err + } + defer closer() + defer out.Close() + + return writeConFd(out, val) +} + +// openProcSelf is a small wrapper around [procfs.Handle.OpenSelf] and +// [pathrs.Reopen] to make "one-shot opens" slightly more ergonomic. The +// provided mode must be os.O_* flags to indicate what mode the returned file +// should be opened with (flags like os.O_CREAT and os.O_EXCL are not +// supported). +// +// If no error occurred, the returned handle is guaranteed to be exactly +// /proc/self/ with no tricky mounts or symlinks causing you to +// operate on an unexpected path (with some caveats on pre-openat2 or +// pre-fsopen kernels). +func openProcSelf(subpath string, mode int) (*os.File, error) { + if subpath == "" { + return nil, ErrEmptyPath + } + + proc, err := procfs.OpenProcRoot() + if err != nil { + return nil, err + } + defer proc.Close() + + handle, err := proc.OpenSelf(subpath) + if err != nil { + return nil, fmt.Errorf("open /proc/self/%s handle: %w", subpath, err) + } + defer handle.Close() // we will return a re-opened handle + + file, err := pathrs.Reopen(handle, mode) + if err != nil { + return nil, fmt.Errorf("reopen /proc/self/%s handle (%#x): %w", subpath, mode, err) + } + return file, nil +} + +// Read the contents of /proc/self/. +func readConSelf(fpath string) (string, error) { + in, err := openProcSelf(fpath, os.O_RDONLY|unix.O_CLOEXEC) + if err != nil { return "", err } + defer in.Close() + return readConFd(in) } -func readConFd(in *os.File) (string, error) { - data, err := io.ReadAll(in) +// Write to /proc/self/. +func writeConSelf(fpath, val string) error { + if val == "" { + if !getEnabled() { + return nil + } + } + + out, err := openProcSelf(fpath, os.O_WRONLY|unix.O_CLOEXEC) if err != nil { - return "", err + return err } - return string(bytes.TrimSuffix(data, []byte{0})), nil + defer out.Close() + + return writeConFd(out, val) +} + +// openProcPid is a small wrapper around [procfs.Handle.OpenPid] and +// [pathrs.Reopen] to make "one-shot opens" slightly more ergonomic. The +// provided mode must be os.O_* flags to indicate what mode the returned file +// should be opened with (flags like os.O_CREAT and os.O_EXCL are not +// supported). +// +// If no error occurred, the returned handle is guaranteed to be exactly +// /proc/self/ with no tricky mounts or symlinks causing you to +// operate on an unexpected path (with some caveats on pre-openat2 or +// pre-fsopen kernels). +func openProcPid(pid int, subpath string, mode int) (*os.File, error) { + if subpath == "" { + return nil, ErrEmptyPath + } + + proc, err := procfs.OpenProcRoot() + if err != nil { + return nil, err + } + defer proc.Close() + + handle, err := proc.OpenPid(pid, subpath) + if err != nil { + return nil, fmt.Errorf("open /proc/%d/%s handle: %w", pid, subpath, err) + } + defer handle.Close() // we will return a re-opened handle + + file, err := pathrs.Reopen(handle, mode) + if err != nil { + return nil, fmt.Errorf("reopen /proc/%d/%s handle (%#x): %w", pid, subpath, mode, err) + } + return file, nil } // classIndex returns the int index for an object class in the loaded policy, @@ -393,78 +527,34 @@ func lFileLabel(fpath string) (string, error) { } func setFSCreateLabel(label string) error { - return writeCon(attrPath("fscreate"), label) + return writeConThreadSelf("attr/fscreate", label) } // fsCreateLabel returns the default label the kernel which the kernel is using // for file system objects created by this task. "" indicates default. func fsCreateLabel() (string, error) { - return readCon(attrPath("fscreate")) + return readConThreadSelf("attr/fscreate") } // currentLabel returns the SELinux label of the current process thread, or an error. func currentLabel() (string, error) { - return readCon(attrPath("current")) + return readConThreadSelf("attr/current") } // pidLabel returns the SELinux label of the given pid, or an error. func pidLabel(pid int) (string, error) { - return readCon(fmt.Sprintf("/proc/%d/attr/current", pid)) + it, err := openProcPid(pid, "attr/current", os.O_RDONLY|unix.O_CLOEXEC) + if err != nil { + return "", nil + } + defer it.Close() + return readConFd(it) } // ExecLabel returns the SELinux label that the kernel will use for any programs // that are executed by the current process thread, or an error. func execLabel() (string, error) { - return readCon(attrPath("exec")) -} - -func writeCon(fpath, val string) error { - if fpath == "" { - return ErrEmptyPath - } - if val == "" { - if !getEnabled() { - return nil - } - } - - out, err := os.OpenFile(fpath, os.O_WRONLY, 0) - if err != nil { - return err - } - defer out.Close() - - if err := isProcHandle(out); err != nil { - return err - } - - if val != "" { - _, err = out.Write([]byte(val)) - } else { - _, err = out.Write(nil) - } - if err != nil { - return err - } - return nil -} - -func attrPath(attr string) string { - // Linux >= 3.17 provides this - const threadSelfPrefix = "/proc/thread-self/attr" - - attrPathOnce.Do(func() { - st, err := os.Stat(threadSelfPrefix) - if err == nil && st.Mode().IsDir() { - haveThreadSelf = true - } - }) - - if haveThreadSelf { - return filepath.Join(threadSelfPrefix, attr) - } - - return filepath.Join("/proc/self/task", strconv.Itoa(unix.Gettid()), "attr", attr) + return readConThreadSelf("exec") } // canonicalizeContext takes a context string and writes it to the kernel @@ -728,19 +818,29 @@ func peerLabel(fd uintptr) (string, error) { // setKeyLabel takes a process label and tells the kernel to assign the // label to the next kernel keyring that gets created func setKeyLabel(label string) error { - err := writeCon("/proc/self/attr/keycreate", label) + // Rather than using /proc/thread-self, we want to use /proc/self to + // operate on the thread-group leader. + err := writeConSelf("attr/keycreate", label) if errors.Is(err, os.ErrNotExist) { return nil } if label == "" && errors.Is(err, os.ErrPermission) { return nil } - if errors.Is(err, unix.EACCES) && unix.Getuid() != unix.Gettid() { + if errors.Is(err, unix.EACCES) && unix.Getpid() != unix.Gettid() { return ErrNotTGLeader } return err } +// KeyLabel retrieves the current kernel keyring label setting for this +// thread-group. +func keyLabel() (string, error) { + // Rather than using /proc/thread-self, we want to use /proc/self to + // operate on the thread-group leader. + return readConSelf("attr/keycreate") +} + // get returns the Context as a string func (c Context) get() string { if l := c["level"]; l != "" { diff --git a/vendor/github.com/opencontainers/selinux/go-selinux/selinux_stub.go b/vendor/github.com/opencontainers/selinux/go-selinux/selinux_stub.go index 0889fbe0e0731..382244e5036b8 100644 --- a/vendor/github.com/opencontainers/selinux/go-selinux/selinux_stub.go +++ b/vendor/github.com/opencontainers/selinux/go-selinux/selinux_stub.go @@ -3,15 +3,11 @@ package selinux -func attrPath(string) string { - return "" -} - -func readCon(string) (string, error) { +func readConThreadSelf(string) (string, error) { return "", nil } -func writeCon(string, string) error { +func writeConThreadSelf(string, string) error { return nil } @@ -81,6 +77,10 @@ func setKeyLabel(string) error { return nil } +func keyLabel() (string, error) { + return "", nil +} + func (c Context) get() string { return "" } diff --git a/vendor/modules.txt b/vendor/modules.txt index 99e30e7ea1899..25d25ef8312d0 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -244,6 +244,18 @@ github.com/coreos/go-systemd/v22/dbus # github.com/cpuguy83/go-md2man/v2 v2.0.7 ## explicit; go 1.12 github.com/cpuguy83/go-md2man/v2/md2man +# github.com/cyphar/filepath-securejoin v0.5.1 +## explicit; go 1.18 +github.com/cyphar/filepath-securejoin/internal/consts +github.com/cyphar/filepath-securejoin/pathrs-lite +github.com/cyphar/filepath-securejoin/pathrs-lite/internal +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/assert +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/fd +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/gocompat +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/kernelversion +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/linux +github.com/cyphar/filepath-securejoin/pathrs-lite/internal/procfs +github.com/cyphar/filepath-securejoin/pathrs-lite/procfs # github.com/davecgh/go-spew v1.1.1 ## explicit github.com/davecgh/go-spew/spew @@ -414,7 +426,7 @@ github.com/opencontainers/runtime-spec/specs-go/features github.com/opencontainers/runtime-tools/generate github.com/opencontainers/runtime-tools/generate/seccomp github.com/opencontainers/runtime-tools/validate/capabilities -# github.com/opencontainers/selinux v1.12.0 +# github.com/opencontainers/selinux v1.13.1 ## explicit; go 1.19 github.com/opencontainers/selinux/go-selinux github.com/opencontainers/selinux/go-selinux/label