Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Lock wiphy in cfg80211_get_station Wiphy should be locked before calling rdev_get_station() (see lockdep assert in ieee80211_get_station()). 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 dwc3_meson_g12a dwc3_of_simple dwc3 ip_gre gre ath10k_pci ath10k_core ath9k ath9k_common ath9k_hw ath CPU: 0 PID: 1091 Comm: kworker/u8:0 Not tainted 6.4.0-02144-g565f9a3a7911-dirty #705 Hardware name: RPT (r1) (DT) Workqueue: bat_events batadv_v_elp_throughput_metric_update pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ath10k_sta_statistics+0x10/0x2dc [ath10k_core] lr : sta_set_sinfo+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: ath10k_sta_statistics+0x10/0x2dc [ath10k_core] sta_set_sinfo+0xcc/0xbd4 ieee80211_get_station+0x2c/0x44 cfg80211_get_station+0x80/0x154 batadv_v_elp_get_throughput+0x138/0x1fc batadv_v_elp_throughput_metric_update+0x1c/0xa4 process_one_work+0x1ec/0x414 worker_thread+0x70/0x46c kthread+0xdc/0xe0 ret_from_fork+0x10/0x20 Code: a9bb7bfd 910003fd a90153f3 f9411c40 (f9402814) This happens because STA has time to disconnect and reconnect before batadv_v_elp_throughput_metric_update() delayed work gets scheduled. In this situation, ath10k_sta_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.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

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CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  5.5 MEDIUM

Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a	Patch
https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba	Patch
https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae	Patch
https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76	Patch
https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	NIST

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Change History

2 change records found show changes

Initial Analysis by NIST 8/29/2024 9:43:49 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 541 characters. View Entire Change Record OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16 up to (excluding) 5.15.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.95 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.35 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.9.6 *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *cpe:2.3:
Added	CVSS V3.1		NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		NIST CWE-476
Changed	Reference Type	https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a No Types Assigned	https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a Patch
Changed	Reference Type	https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba No Types Assigned	https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba Patch
Changed	Reference Type	https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae No Types Assigned	https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae Patch
Changed	Reference Type	https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76 No Types Assigned	https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9 No Types Assigned	https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9 Patch

New CVE Received by NIST 7/12/2024 9:15:14 AM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 2701 characters. View Entire Change Record In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Lock wiphy in cfg80211_get_station Wiphy should be locked before calling rdev_get_station() (see lockdep assert in ieee80211_get_station()). 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
Added	Reference		kernel.org https://git.kernel.org/stable/c/0ccc63958d8373e15a69f4f8069f3e78f7f3898a [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/43e1eefb0b2094e2281150d87d09e8bc872b9fba [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/642f89daa34567d02f312d03e41523a894906dae [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/6d540b0317901535275020bd4ac44fac6439ca76 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/dfd84ce41663be9ca3f69bd657c45f49b69344d9 [No types assigned]