config_format: fix possible heap overflow #7768
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The return value of `strchr` is not checked for failure. If it's failure then `tmp` will be `0` in the `(tmp-p)` calculation, causing `xlen` to be `p`. `xlen` is later used for copying memory by way of `memcpy` in string creation using `flb_sds_create_len`. This fixes it. Signed-off-by: David Korczynski <[email protected]>
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The return value of `strchr` is not checked for failure. If it's failure then `tmp` will be `0` in the `(tmp-p)` calculation, causing `xlen` to be `p`. `xlen` is later used for copying memory by way of `memcpy` in string creation using `flb_sds_create_len`. This fixes it. Signed-off-by: David Korczynski <[email protected]>
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The return value of
strchris not checked for failure. If it's failure thentmpwill be0in the(tmp-p)calculation, causingxlento bep.xlenis later used for copying memory by way ofmemcpyin string creation usingflb_sds_create_len. This fixes it.Enter
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