- Vulnerability/
- CVE-2024-57899
CVE-2024-57899: wifi: mac80211: fix mbss changed flags corruption on 32 bit systems
First published: Wed Jan 15 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix mbss changed flags corruption on 32 bit systems On 32-bit systems, the size of an unsigned long is 4 bytes, while a u64 is 8 bytes. Therefore, when using or_each_set_bit(bit, &bits, sizeof(changed) * BITS_PER_BYTE), the code is incorrectly searching for a bit in a 32-bit variable that is expected to be 64 bits in size, leading to incorrect bit finding. Solution: Ensure that the size of the bits variable is correctly adjusted for each architecture. Call Trace: ? show_regs+0x54/0x58 ? __warn+0x6b/0xd4 ? ieee80211_link_info_change_notify+0xcc/0xd4 [mac80211] ? report_bug+0x113/0x150 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x44 ? exc_invalid_op+0x18/0x50 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? ieee80211_link_info_change_notify+0xcc/0xd4 [mac80211] ? exc_overflow+0x30/0x30 ? ieee80211_link_info_change_notify+0xcc/0xd4 [mac80211] ? ieee80211_mesh_work+0xff/0x260 [mac80211] ? cfg80211_wiphy_work+0x72/0x98 [cfg80211] ? process_one_work+0xf1/0x1fc ? worker_thread+0x2c0/0x3b4 ? kthread+0xc7/0xf0 ? mod_delayed_work_on+0x4c/0x4c ? kthread_complete_and_exit+0x14/0x14 ? ret_from_fork+0x24/0x38 ? kthread_complete_and_exit+0x14/0x14 ? ret_from_fork_asm+0xf/0x14 ? entry_INT80_32+0xf0/0xf0 [restore no-op path for no changes]
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | <=5.10.223-1<=5.10.234-1<=6.1.129-1<=6.1.128-1 | 6.12.20-1 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/36b739637d7042843f9df57212ecee6ed6e0d4b2
- https://git.kernel.org/stable/c/49dba1ded8dd5a6a12748631403240b2ab245c34
- https://git.kernel.org/stable/c/86772872f9f5097cd03d0e1c6813238bd38c250b
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-57899
- https://nvd.nist.gov/vuln/detail/CVE-2024-57899
- https://launchpad.net/bugs/cve/CVE-2024-57899
- https://security-tracker.debian.org/tracker/CVE-2024-57899
- https://ubuntu.com/security/CVE-2024-57899
- https://git.kernel.org/linus/49dba1ded8dd5a6a12748631403240b2ab245c34
Frequently Asked Questions
What is the severity of CVE-2024-57899?
CVE-2024-57899 has a moderate severity rating due to potential flags corruption in the Linux kernel on 32-bit systems.
How do I fix CVE-2024-57899?
To fix CVE-2024-57899, update your Linux kernel to the latest stable version that includes the security patch.
What systems are affected by CVE-2024-57899?
CVE-2024-57899 affects Linux kernel users on 32-bit systems.
Are there any workarounds for CVE-2024-57899?
There are no effective workarounds for CVE-2024-57899; the recommended action is to apply the kernel update.
What component is primarily affected by CVE-2024-57899?
CVE-2024-57899 primarily affects the mac80211 component of the Linux kernel's wireless networking stack.
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