7.5
High
CVE-2021-47295 In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in…
Description
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 6.2 | earliest → < 6.2.5 | 6.2.5 |
| Linux 6.1 | earliest → < 6.1.18 | 6.1.18 |
| Linux 5.15 | earliest → < 5.15.100 | 5.15.100 |
| Linux 5.14 | earliest → < 5.14 | 5.14 |
| Linux 5.13 | earliest → < 5.13.6 | 5.13.6 |
| Linux 5.10 | earliest → < 5.10.54 | 5.10.54 |
| Linux 5.4 | earliest → < 5.4.136 | 5.4.136 |
| Linux 4.19 | earliest → < 4.19.276 | 4.19.276 |
| Linux 4.14 | earliest → < 4.14.308 | 4.14.308 |
Show the 2 other branches Hide the 2 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux | 3.18 | No fix stated |
| linux_kernel 5.14 | earliest → < 5.14 | 5.14 |
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