CVE-2026-43035
net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak When building netlink messages, tc_chain_fill_node() never initializes the tcm_info field of struct tcmsg. Since the allocation is not zeroed, kernel heap memory is leaked to userspace through this 4-byte field. The fix simply zeroes tcm_info alongside the other fields that are already initialized.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 1, 2026 |
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Affected Versions
Linux / Linux
32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < 903c3405cfcc7700260e456ab66a5867586c9e69 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < 71a3eda7e850ae844cb8993065f4e410c11a46ce 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < 4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < e35f5195cd44ff4053fbc5d71ea97681728a0099 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < d6db08484c6cb3d4ad696246f9d288eceba2a078 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < 906997ea3766c24fbbf9cc4bf17c047315bbd138 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < 1091b3c174441a52fdbb92e2fe00338f9371a91c 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e < e6e3eb5ee89ac4c163d46429391c889a1bb5e404
Linux / Linux
4.19
References
git.kernel.org: https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69 git.kernel.org: https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce git.kernel.org: https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3 git.kernel.org: https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099 git.kernel.org: https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078 git.kernel.org: https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138 git.kernel.org: https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c git.kernel.org: https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404