CVE-2023-52832

CRITICAL
Published May 21, 2024 Modified Jan 5, 2026 CWE-920

Description

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.

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CVSS v3.1 Score

9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-920 CWE-920

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/21a0f310a9f3bfd2b4cf4f382430e638607db846 https://git.kernel.org/stable/c/2be24c47ac19bf639c48c082486c08888bd603c6 https://git.kernel.org/stable/c/5a94cffe90e20e8fade0b9abd4370bd671fe87c7 https://git.kernel.org/stable/c/717de20abdcd1d4993fa450e28b8086a352620ea https://git.kernel.org/stable/c/adc2474d823fe81d8da759207f4f1d3691aa775a https://git.kernel.org/stable/c/e160ab85166e77347d0cbe5149045cb25e83937f https://git.kernel.org/stable/c/1571120c44dbe5757aee1612c5b6097cdc42710f https://git.kernel.org/stable/c/21a0f310a9f3bfd2b4cf4f382430e638607db846 https://git.kernel.org/stable/c/298e767362cade639b7121ecb3cc5345b6529f62 https://git.kernel.org/stable/c/2be24c47ac19bf639c48c082486c08888bd603c6 https://git.kernel.org/stable/c/5a94cffe90e20e8fade0b9abd4370bd671fe87c7 https://git.kernel.org/stable/c/717de20abdcd1d4993fa450e28b8086a352620ea https://git.kernel.org/stable/c/adc2474d823fe81d8da759207f4f1d3691aa775a https://git.kernel.org/stable/c/e160ab85166e77347d0cbe5149045cb25e83937f https://git.kernel.org/stable/c/efeae5f4972f75d50002bc50eb112ab9e7069b18

Frequently Asked Questions

What is CVE-2023-52832? +
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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2023-52832? +
CVE-2023-52832 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2023-52832? +
CVE-2023-52832 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52832? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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