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authorChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:24:58 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-30 12:27:06 +0000
commit33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch)
tree406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1844635
parentadedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff)
downloademulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz
emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip
add launchpad bug reports without comments
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diff --git a/results/scraper/launchpad-without-comments/1844635 b/results/scraper/launchpad-without-comments/1844635
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+qemu bug where load linux kernel
+
+i found a qemu bug ,when the qemu start and parse the kernel file .
+
+This vulnerability can be exploited.
+
+thanks
+
+/****
+
+
+(gdb) set args -nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device pci-testdev -machine accel=kvm -m 2048  -smp 2 -cpu host -machine kernel_irqchip=split -kernel poc1
+(gdb) r
+Starting program: /usr/bin/qemu-system-x86_64 -nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device pci-testdev -machine accel=kvm -m 2048  -smp 2 -cpu host -machine kernel_irqchip=split -kernel ./poc/poc1
+[Thread debugging using libthread_db enabled]
+Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
+[New Thread 0x7fffe9a03700 (LWP 30066)]
+[New Thread 0x7fffe9202700 (LWP 30068)]
+[New Thread 0x7fffe8a01700 (LWP 30069)]
+
+Thread 1 "qemu-system-x86" received signal SIGSEGV, Segmentation fault.
+__memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:249
+249	../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: No such file or directory.
+(gdb) bt
+#0  0x00007ffff2390b1f in __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:249
+#1  0x00005555559ebdcf in rom_copy ()
+#2  0x00005555558dd1b3 in load_multiboot ()
+#3  0x00005555558de1c3 in  ()
+#4  0x00005555558e19d1 in pc_memory_init ()
+#5  0x00005555558e4ee3 in  ()
+#6  0x00005555559e8500 in machine_run_board_init ()
+#7  0x0000555555834959 in main ()
+(gdb) c
+Continuing.
+Couldn't get registers: No such process.
+Couldn't get registers: No such process.
+(gdb) [Thread 0x7fffe8a01700 (LWP 30069) exited]
+[Thread 0x7fffe9202700 (LWP 30068) exited]
+[Thread 0x7fffe9a03700 (LWP 30066) exited]
+
+Program terminated with signal SIGSEGV, Segmentation fault.
+The program no longer exists.
+
+***/
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