CVE-2024-27053 Affecting linux-5.10 package, versions <5.10.216-1~deb10u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Jun 2024
- disclosed1 May 2024
Introduced: 1 May 2024
CVE-2024-27053 (opens in a new tab)How to fix?
Upgrade Debian:10 linux-5.10 to version 5.10.216-1~deb10u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-5.10 package and not the linux-5.10 package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
wifi: wilc1000: fix RCU usage in connect path
With lockdep enabled, calls to the connect function from cfg802.11 layer lead to the following warning:
============================= WARNING: suspicious RCU usage 6.7.0-rc1-wt+ #333 Not tainted
drivers/net/wireless/microchip/wilc1000/hif.c:386 suspicious rcu_dereference_check() usage! [...] stack backtrace: CPU: 0 PID: 100 Comm: wpa_supplicant Not tainted 6.7.0-rc1-wt+ #333 Hardware name: Atmel SAMA5 unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x34/0x48 dump_stack_lvl from wilc_parse_join_bss_param+0x7dc/0x7f4 wilc_parse_join_bss_param from connect+0x2c4/0x648 connect from cfg80211_connect+0x30c/0xb74 cfg80211_connect from nl80211_connect+0x860/0xa94 nl80211_connect from genl_rcv_msg+0x3fc/0x59c genl_rcv_msg from netlink_rcv_skb+0xd0/0x1f8 netlink_rcv_skb from genl_rcv+0x2c/0x3c genl_rcv from netlink_unicast+0x3b0/0x550 netlink_unicast from netlink_sendmsg+0x368/0x688 netlink_sendmsg from ____sys_sendmsg+0x190/0x430 ____sys_sendmsg from ___sys_sendmsg+0x110/0x158 ___sys_sendmsg from sys_sendmsg+0xe8/0x150 sys_sendmsg from ret_fast_syscall+0x0/0x1c
This warning is emitted because in the connect path, when trying to parse target BSS parameters, we dereference a RCU pointer whithout being in RCU critical section. Fix RCU dereference usage by moving it to a RCU read critical section. To avoid wrapping the whole wilc_parse_join_bss_param under the critical section, just use the critical section to copy ies data
References
- https://security-tracker.debian.org/tracker/CVE-2024-27053
- https://git.kernel.org/stable/c/205c50306acf58a335eb19fa84e40140f4fe814f
- https://git.kernel.org/stable/c/4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce
- https://git.kernel.org/stable/c/5800ec78775c0cd646f71eb9bf8402fb794807de
- https://git.kernel.org/stable/c/745003b5917b610352f52fe0d11ef658d6471ec2
- https://git.kernel.org/stable/c/b4bbf38c350acb6500cbe667b1e2e68f896e4b38
- https://git.kernel.org/stable/c/d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2
- https://git.kernel.org/stable/c/dd50d3ead6e3707bb0a5df7cc832730c93ace3a7
- https://git.kernel.org/stable/c/e556006de4ea93abe2b46cba202a2556c544b8b2
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html