Bug 1022288
| Summary: | SELinux is preventing /usr/bin/dmesg from 'write' accesses on the file /proc/sys/kernel/printk. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Thynson <lanxingcan> |
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 20 | CC: | dominick.grift, dwalsh, lvrabec, mgrepl |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:dafa71f88347318b34ea495b1b8985c2105e6c21e658753cb1632bf006b1429b | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-10-24 14:08:40 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
*** This bug has been marked as a duplicate of bug 986647 *** |
Description of problem: SELinux is preventing /usr/bin/dmesg from 'write' accesses on the file /proc/sys/kernel/printk. ***** Plugin leaks (86.2 confidence) suggests ***************************** If 您想要忽略 dmesg 尝试 write 访问 printk file，因为您确定它不应需要这个访问。 Then 您应该将这个问题作为 bug 报告。 您可以创建本地策略模块不审核这个访问。 Do # grep /usr/bin/dmesg /var/log/audit/audit.log | audit2allow -D -M mypol # semodule -i mypol.pp ***** Plugin catchall (14.7 confidence) suggests ************************** If 您确定应默认允许 dmesg write 访问 printk file。 Then 您应该将这个情况作为 bug 报告。 您可以生成本地策略模块允许这个访问。 Do 请执行以下命令此时允许这个访问： # grep dmesg /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:dmesg_t:s0 Target Context system_u:object_r:sysctl_kernel_t:s0 Target Objects /proc/sys/kernel/printk [ file ] Source dmesg Source Path /usr/bin/dmesg Port <未知> Host (removed) Source RPM Packages util-linux-2.24-0.1.fc20.x86_64 Target RPM Packages Policy RPM selinux-policy-3.12.1-90.fc20.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 3.11.6-300.fc20.x86_64 #1 SMP Fri Oct 18 22:31:53 UTC 2013 x86_64 x86_64 Alert Count 2 First Seen 2013-10-20 00:56:52 CST Last Seen 2013-10-23 09:01:40 CST Local ID 5504ddf3-3a23-41d4-978f-1726f771bc0b Raw Audit Messages type=AVC msg=audit(1382490100.928:521): avc: denied { write } for pid=4242 comm="dmesg" path="/proc/sys/kernel/printk" dev="proc" ino=27086 scontext=system_u:system_r:dmesg_t:s0 tcontext=system_u:object_r:sysctl_kernel_t:s0 tclass=file type=SYSCALL msg=audit(1382490100.928:521): arch=x86_64 syscall=execve success=yes exit=0 a0=22adc20 a1=22acc60 a2=22acb00 a3=8 items=0 ppid=4240 pid=4242 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=(none) comm=dmesg exe=/usr/bin/dmesg subj=system_u:system_r:dmesg_t:s0 key=(null) Hash: dmesg,dmesg_t,sysctl_kernel_t,file,write Additional info: reporter: libreport-2.1.8 hashmarkername: setroubleshoot kernel: 3.11.6-300.fc20.x86_64 type: libreport Potential duplicate: bug 986647