Description
In the Linux kernel, the following vulnerability has been resolved:
proc: protect ptrace_may_access() with exec_update_lock (part 1)
Fix the easy cases where procfs currently calls ptrace_may_access() without exec_update_lock protection, where the fix is to simply add the extra lock or use mm_access():
- do_task_stat(): grab exec_update_lock - proc_pid_wchan(): grab exec_update_lock - proc_map_files_lookup(): use mm_access() instead of get_task_mm() - proc_map_files_readdir(): use mm_access() instead of get_task_mm() - proc_ns_get_link(): grab exec_update_lock - proc_ns_readlink(): grab exec_update_lock
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < ae1e630bcaac739f625822078edbaea98366930d; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < d54f14655fd7d7b293698a8b6918563c4c0465e7; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < 7456ae990a9738962b33146916fabca62ae3d4e0; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < 4bfe8c481846cee52473a2f7d7b30ee8e6749fc4; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < f9b4b03ccc9c69bf7f7298d4559906ebea7143b3; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < c1cfd63326f5d09999134e9052c353faf738286e; >= f83ce3e6b02d5e48b3a43b001390e2b58820389d, < 6650527444dadc63d84aa939d14ecba4fadb2f69; 6b06d6282100dd5aacf7d45443d651a1995bd9c4; 334ed22054b2ec8477e4409e214fc139cf937ef6; >= 2.6.27.23, < 2.6.28; >= 2.6.29.3, < 2.6.30 |
| Linux | Linux | 2.6.30 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.6, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.7, < * |
References
- https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4Patch
- https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69Patch
- https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0Patch
- https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930dPatch
- https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9Patch
- https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286ePatch
- https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7Patch
- https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Timeline
- Published
- Jul 25, 2026
- Last modified
- Nov 10, 2026
- NVD status
- Modified