riscv, bpf: Fix memory leak in bpf_jit_free
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.110, 6.18.52, 7.2.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix memory leak in bpf_jit_free When bpf_int_jit_compile() is called for subprograms, it returns early during the first pass (!prog->is_func || extra_pass is false), keeping ctx->offset alive for the subsequent extra pass. If JIT compilation fails for a later subprogram, the BPF core aborts and calls bpf_jit_free() to clean up the first subprogram. However, bpf_jit_free() fails to free jit_data->ctx.offset, which causes a memory leak of the JIT context offsets array. Fix this by adding the missing kfree(jit_data->ctx.offset) in bpf_jit_free().
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 48a8f78c50bd6f7f08fd40daa62252fd043f2f18 · fixed in 7285f004293e7dc043c55369c0dbe8350b28cc45; From 48a8f78c50bd6f7f08fd40daa62252fd043f2f18 · fixed in b594c23f584ab032a5eae809eee81b809dd27330; From 48a8f78c50bd6f7f08fd40daa62252fd043f2f18 · fixed in 5cadc66b534fe8140441916200a20c7efb06a388; From 48a8f78c50bd6f7f08fd40daa62252fd043f2f18 · fixed in 2a3a29e90021806ea00527f6458cfd2edb58b42a; From 48a8f78c50bd6f7f08fd40daa62252fd043f2f18 · fixed in 369e4635d04801f394d5bd42556f21029e95ff93
- Linux Linux
6.6
- KernelLinux
From 6.6.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6