Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before 903c3405cfcc7700260e456ab66a5867586c9e69; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before 71a3eda7e850ae844cb8993065f4e410c11a46ce; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before 4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before e35f5195cd44ff4053fbc5d71ea97681728a0099; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before d6db08484c6cb3d4ad696246f9d288eceba2a078; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before 906997ea3766c24fbbf9cc4bf17c047315bbd138; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before 1091b3c174441a52fdbb92e2fe00338f9371a91c; affected 32a4f5ecd7381f30ae3bb36dea77a150ba68af2e before e6e3eb5ee89ac4c163d46429391c889a1bb5e404 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.134 through 6.6.*; unaffected 6.12.81 through 6.12.*; unaffected 6.18.22 through 6.18.*; unaffected 6.19.12 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69
- https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce
- https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3
- https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099
- https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078
- https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138
- https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c
- https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404
ADP enrichment
No English description supplied.