Updated: 2024-12-10 01:56:47.52743
Description:
In the Linux kernel, the following vulnerability has been resolved: net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..). If some error happens in emac_tx_fill_tpd(), the skb will be freed via dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd(). But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len). As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len, thus my patch assigns skb->len to 'len' before the possible free and use 'len' instead of skb->len later.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | HIGH | 7.8 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.8 | HIGH | Already Fixed | 2024-08-30 12:23:12 | ||
| AlmaLinux 9.2 FIPS | kernel | 5.14.0 | 7.8 | HIGH | Already Fixed | 2024-08-30 12:23:13 | ||
| CentOS 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:55 | ||
| CentOS 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:54 | ||
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:54 | ||
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:55 | ||
| CentOS Stream 8 ELS | kernel | 4.18.0 | 7.8 | HIGH | Already Fixed | 2024-06-09 14:19:15 | ||
| CloudLinux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:55 | ||
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2024-08-21 03:46:54 | ||
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7.8 | HIGH | Already Fixed | 2024-12-10 11:55:33 |