Description
In the Linux kernel, the following vulnerability has been resolved: wifi: fix leak if split 6 GHz scanning fails rdev->int_scan_req is leaked if cfg80211_scan() fails. Note that it's supposed to be released at ___cfg80211_scan_done() but this doesn't happen as rdev->scan_req is NULL at that point, too, leading to the early return from the freeing function. unreferenced object 0xffff8881161d0800 (size 512): comm "wpa_supplicant", pid 379, jiffies 4294749765 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 f0 81 13 16 81 88 ff ff ................ backtrace (crc c867fdb6): kmemleak_alloc+0x89/0x90 __kmalloc_noprof+0x2fd/0x410 cfg80211_scan+0x133/0x730 nl80211_trigger_scan+0xc69/0x1cc0 genl_family_rcv_msg_doit+0x204/0x2f0 genl_rcv_msg+0x431/0x6b0 netlink_rcv_skb+0x143/0x3f0 genl_rcv+0x27/0x40 netlink_unicast+0x4f6/0x820 netlink_sendmsg+0x797/0xce0 __sock_sendmsg+0xc4/0x160 ____sys_sendmsg+0x5e4/0x890 ___sys_sendmsg+0xf8/0x180 __sys_sendmsg+0x136/0x1e0 __x64_sys_sendmsg+0x76/0xc0 x64_sys_call+0x13f0/0x17d0 Found by Linux Verification Center (linuxtesting.org).
Product status
c8cb5b854b40f2ce52ccd032fa19750f4181d5fc (git) before fb8db813eba2e56ee001c9fb5c2ce2cb78c42642
c8cb5b854b40f2ce52ccd032fa19750f4181d5fc (git) before a24134ddc18b4d440714365637d440b7121447b9
c8cb5b854b40f2ce52ccd032fa19750f4181d5fc (git) before e8694f7cc29287e843648d1075177b9a2000d957
5.10
Any version before 5.10
6.18.36 (semver)
7.0.13 (semver)
7.1 (original_commit_for_fix)
References
git.kernel.org/...c/fb8db813eba2e56ee001c9fb5c2ce2cb78c42642
git.kernel.org/...c/a24134ddc18b4d440714365637d440b7121447b9
git.kernel.org/...c/e8694f7cc29287e843648d1075177b9a2000d957