CVE-2024-40911
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-40911
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-40911.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-40911
- Downstream
- Related
- Published
- 2024-07-12T12:20:49Z
- Modified
- 2025-10-16T21:20:48.292423Z
- Summary
- wifi: cfg80211: Lock wiphy in cfg80211_get_station
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: Lock wiphy in cfg80211getstation
Wiphy should be locked before calling rdevgetstation() (see lockdep assert in ieee80211getstation()).
This fixes the following kernel NULL dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000050 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000003001000 [0000000000000050] pgd=0800000002dca003, p4d=0800000002dca003, pud=08000000028e9003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] SMP Modules linked in: netconsole dwc3mesong12a dwc3ofsimple dwc3 ipgre gre ath10kpci ath10kcore ath9k ath9kcommon ath9khw ath CPU: 0 PID: 1091 Comm: kworker/u8:0 Not tainted 6.4.0-02144-g565f9a3a7911-dirty #705 Hardware name: RPT (r1) (DT) Workqueue: batevents batadvvelpthroughputmetricupdate pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ath10kstastatistics+0x10/0x2dc [ath10kcore] lr : stasetsinfo+0xcc/0xbd4 sp : ffff000007b43ad0 x29: ffff000007b43ad0 x28: ffff0000071fa900 x27: ffff00000294ca98 x26: ffff000006830880 x25: ffff000006830880 x24: ffff00000294c000 x23: 0000000000000001 x22: ffff000007b43c90 x21: ffff800008898acc x20: ffff00000294c6e8 x19: ffff000007b43c90 x18: 0000000000000000 x17: 445946354d552d78 x16: 62661f7200000000 x15: 57464f445946354d x14: 0000000000000000 x13: 00000000000000e3 x12: d5f0acbcebea978e x11: 00000000000000e3 x10: 000000010048fe41 x9 : 0000000000000000 x8 : ffff000007b43d90 x7 : 000000007a1e2125 x6 : 0000000000000000 x5 : ffff0000024e0900 x4 : ffff800000a0250c x3 : ffff000007b43c90 x2 : ffff00000294ca98 x1 : ffff000006831920 x0 : 0000000000000000 Call trace: ath10kstastatistics+0x10/0x2dc [ath10kcore] stasetsinfo+0xcc/0xbd4 ieee80211getstation+0x2c/0x44 cfg80211getstation+0x80/0x154 batadvvelpgetthroughput+0x138/0x1fc batadvvelpthroughputmetricupdate+0x1c/0xa4 processonework+0x1ec/0x414 workerthread+0x70/0x46c kthread+0xdc/0xe0 retfrom_fork+0x10/0x20 Code: a9bb7bfd 910003fd a90153f3 f9411c40 (f9402814)
This happens because STA has time to disconnect and reconnect before batadvvelpthroughputmetricupdate() delayed work gets scheduled. In this situation, ath10ksta_state() can be in the middle of resetting arsta data when the work queue get chance to be scheduled and ends up accessing it. Locking wiphy prevents that.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a
- https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba
- https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae
- https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76
- https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7406353d43c8e2faf478721e87aeb6f2f9685de0Fixeddfd84ce41663be9ca3f69bd657c45f49b69344d9
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7406353d43c8e2faf478721e87aeb6f2f9685de0Fixed6d540b0317901535275020bd4ac44fac6439ca76
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7406353d43c8e2faf478721e87aeb6f2f9685de0Fixed0ccc63958d8373e15a69f4f8069f3e78f7f3898a
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7406353d43c8e2faf478721e87aeb6f2f9685de0Fixed43e1eefb0b2094e2281150d87d09e8bc872b9fba
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced7406353d43c8e2faf478721e87aeb6f2f9685de0Fixed642f89daa34567d02f312d03e41523a894906dae