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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1661815 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1661815')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1661815 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1661815 b/results/scraper/launchpad-without-comments/1661815 new file mode 100644 index 00000000..b1fd4cf5 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1661815 @@ -0,0 +1,26 @@ +Stack address is returned from function translate_one + +The vulnerable version is qemu-2.8.0, and the vulnerable function is in "target-s390x/translate.c". + +The code snippet is as following. + +static ExitStatus translate_one(CPUS390XState *env, DisasContext *s) +{ + const DisasInsn *insn; + ExitStatus ret = NO_EXIT; + DisasFields f; + ... + s->fields = &f; + ... + s->pc = s->next_pc; + return ret; +} + +A stack address, i.e. the address of local variable "f" is returned from current function through the output parameter "s->fields" as a side effect. + +This issue is one kind of undefined behaviors, according the C Standard, 6.2.4 [ISO/IEC 9899:2011] (https://www.securecoding.cert.org/confluence/display/c/DCL30-C.+Declare+objects+with+appropriate+storage+durations) + +This dangerous defect may lead to an exploitable vulnerability. +We suggest sanitizing "s->fields" as null before return. + +Note that this issue is reported by shqking and Zhenwei Zou together. \ No newline at end of file |