Paper/Archive/CVE-2023-52832

CVE-2023-52832

Linux Linux — wifi: mac80211: don't return unset power in ieee80211_get_tx_power()

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 69.7.697 × 2013.9 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't return unset power in ieee80211_get_tx_power() We can get a UBSAN warning if ieee80211_get_tx_power() returns the INT_MIN value mac80211 internally uses for "unset power level". UBSAN: signed-integer-overflow in net/wireless/nl80211.c:3816:5 -2147483648 * 100 cannot be represented in type 'int' CPU: 0 PID: 20433 Comm: insmod Tainted: G WC OE Call Trace: dump_stack+0x74/0x92 ubsan_epilogue+0x9/0x50 handle_overflow+0x8d/0xd0 __ubsan_handle_mul_overflow+0xe/0x10 nl80211_send_iface+0x688/0x6b0 [cfg80211] [...] cfg80211_register_wdev+0x78/0xb0 [cfg80211] cfg80211_netdev_notifier_call+0x200/0x620 [cfg80211] [...] ieee80211_if_add+0x60e/0x8f0 [mac80211] ieee80211_register_hw+0xda5/0x1170 [mac80211] In this case, simply return an error instead, to indicate that no data is available.

Affected

ProductAffectedFixed inSource

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < 717de20abdcd1d4993fa450e28b8086a352620ea717de20abdcd1d4993fa450e28b8086a352620eaCNA

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < 21a0f310a9f3bfd2b4cf4f382430e638607db84621a0f310a9f3bfd2b4cf4f382430e638607db846CNA

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < 2be24c47ac19bf639c48c082486c08888bd603c62be24c47ac19bf639c48c082486c08888bd603c6CNA

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < adc2474d823fe81d8da759207f4f1d3691aa775aadc2474d823fe81d8da759207f4f1d3691aa775aCNA

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < 5a94cffe90e20e8fade0b9abd4370bd671fe87c75a94cffe90e20e8fade0b9abd4370bd671fe87c7CNA

Linuxdb6d9e9e8b48b7ab68c61553eb5fa68534dd0fde – < e160ab85166e77347d0cbe5149045cb25e83937fe160ab85166e77347d0cbe5149045cb25e83937fCNA

Linux5.75.10.202CNA

linux_kernel1da177e4c3f4–CISA-ADP

linux_kernelsee advisory4.14.331CISA-ADP

linux_kernelsee advisory4.19.300CISA-ADP

linux_kernelsee advisory5.4.262CISA-ADP

linux_kernelsee advisory5.10.202CISA-ADP

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References