Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: binfmt_elf_fdpic: only honour the first PT_INTERP The program header scan handles PT_INTERP from a switch nested in the scan loop, so its break leaves the switch and not the loop. A binary carrying more than one PT_INTERP runs the case again and overwrites both interpreter_name and interpreter. The previous name allocation leaks and so does the previous interpreter reference, along with the write denial open_exec() took on it. The denial is never released, so the file stays unwritable for as long as the system runs. An unprivileged caller reaches this with a crafted binary and repeats it at will. binfmt_elf stops at the first PT_INTERP. Do the same here. The flaw dates back to the driver's introduction in the pre-git history tree introduced in v2.6.11 by 91808d6ebe39 ("[PATCH] FRV: Add FDPIC ELF binary format driver").
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9854538349aaf6fb88ed33b56987954ac1716151; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3c31397b0a75310217f1f2f3c7bdfd8af67aec4c; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 849a7bd9d266e43a457db5c6b322600f916a2127; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e4563e07ef5c938d5332c5c44721db976f214bc6; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 21eaf5594a33d16343a011c752624099c30e918f; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 89b9121c3b0162655fc2f190b714ae64f1aa8cae; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 69ecc199880bf7e8d06224c82dc411d18f9285f8; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3349ef6a366a61d631f6a263d12cea240957719d |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9854538349aaf6fb88ed33b56987954ac1716151
- https://git.kernel.org/stable/c/3c31397b0a75310217f1f2f3c7bdfd8af67aec4c
- https://git.kernel.org/stable/c/849a7bd9d266e43a457db5c6b322600f916a2127
- https://git.kernel.org/stable/c/e4563e07ef5c938d5332c5c44721db976f214bc6
- https://git.kernel.org/stable/c/21eaf5594a33d16343a011c752624099c30e918f
- https://git.kernel.org/stable/c/89b9121c3b0162655fc2f190b714ae64f1aa8cae
- https://git.kernel.org/stable/c/69ecc199880bf7e8d06224c82dc411d18f9285f8
- https://git.kernel.org/stable/c/3349ef6a366a61d631f6a263d12cea240957719d