CVE-2024-49982: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023-6270, f98364e92662 ("aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts") makes tx() calling dev_put() instead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs into use-after-free. Then Nicolai Stange found more places in aoe have potential use-after-free problem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe() and aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push packet to tx queue. So they should also use dev_hold() to increase the refcnt of skb->dev. On the other hand, moving dev_put() to tx() causes that the refcnt of skb->dev be reduced to a negative value, because corresponding dev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(), probe(), and aoecmd_cfg_rsp(). This patch fixed this issue.

Affected products

• Linux Linux Kernel: from 5.10.214, before 5.10.227 (fixed in 5.10.227); from 5.15.153, before 5.15.168 (fixed in 5.15.168); from 6.1.83, before 6.1.113 (fixed in 6.1.113); from 6.6.23, before 6.6.55 (fixed in 6.6.55); from 6.7.11, before 6.8.2 (fixed in 6.8.2); from 6.9, before 6.10.14 (fixed in 6.10.14); …

Published 2024-10-21. Last modified 2026-08-04.