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Change History

In the Linux kernel, the following vulnerability has been resolved:

perf bpf: Avoid memory leak from perf_env__insert_btf()

perf_env__insert_btf() doesn't insert if a duplicate BTF id is
encountered and this causes a memory leak. Modify the function to return
a success/error value and then free the memory if insertion didn't
happen.

v2. Adds a return -1 when the insertion error occurs in
    perf_env__fetch_btf. This doesn't affect anything as the result is
    never checked.

kernel.org https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc [No types assigned]

kernel.org https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f [No types assigned]

kernel.org https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 [No types assigned]

kernel.org https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e [No types assigned]