| commit | 490ca207fb0f23bca9d21c04e309502e1ed8b58d | [log] [tgz] |
|---|---|---|
| author | Eric Sandeen <[email protected]> | Tue Jul 13 17:49:23 2021 +0200 |
| committer | COS Cherry Picker <[email protected]> | Wed Jul 21 09:56:21 2021 -0700 |
| tree | aa7087ee642486f3962129d4df712bfd9c565ae1 | |
| parent | b419957a802ee4d0cd7a646a2fd6cb2967dc11ef [diff] |
seq_file: disallow extremely large seq buffer allocations There is no reasonable need for a buffer larger than this, and it avoids int overflow pitfalls. BUG=b/194226724 TEST=presubmit SOURCE=UPSTREAM(8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b) RELEASE_NOTE=Fixed CVE-2021-33909 cos-patch: security-high Fixes: 058504edd026 ("fs/seq_file: fallback to vmalloc allocation") Suggested-by: Al Viro <[email protected]> Reported-by: Qualys Security Advisory <[email protected]> Signed-off-by: Eric Sandeen <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]> Change-Id: Ief7d9d22ef5e05a29acc3817d4554556f05ecf8a Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/19731 Tested-by: Cusky Presubmit Bot <[email protected]> Main-Branch-Verified: Cusky Presubmit Bot <[email protected]> Reviewed-by: Vaibhav Rustagi <[email protected]>