Metrics
Affected Vendors & Products
Wed, 04 Dec 2024 14:45:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Redhat rhel Eus
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CPEs | cpe:/a:redhat:rhel_eus:9.2 cpe:/a:redhat:rhel_eus:9.2::nfv cpe:/a:redhat:rhel_eus:9.4 |
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Vendors & Products |
Redhat rhel Eus
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Wed, 13 Nov 2024 02:30:00 +0000
Type | Values Removed | Values Added |
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CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9 |
Tue, 24 Sep 2024 11:00:00 +0000
Type | Values Removed | Values Added |
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CPEs | cpe:/o:redhat:enterprise_linux:8 |
Tue, 24 Sep 2024 06:30:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Redhat
Redhat enterprise Linux |
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CPEs | cpe:/a:redhat:enterprise_linux:8::nfv | |
Vendors & Products |
Redhat
Redhat enterprise Linux |
Wed, 11 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
|
Fri, 16 Aug 2024 18:45:00 +0000
Type | Values Removed | Values Added |
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Weaknesses | CWE-99 |
Thu, 08 Aug 2024 21:30:00 +0000
Type | Values Removed | Values Added |
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References |
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Metrics |
threat_severity
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threat_severity
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Thu, 08 Aug 2024 15:15:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-835 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
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Metrics |
cvssV3_1
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Wed, 07 Aug 2024 15:30:00 +0000
Type | Values Removed | Values Added |
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Description | In the Linux kernel, the following vulnerability has been resolved: x86/bhi: Avoid warning in #DB handler due to BHI mitigation When BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set then entry_SYSENTER_compat() uses CLEAR_BRANCH_HISTORY and calls the clear_bhb_loop() before the TF flag is cleared. This causes the #DB handler (exc_debug_kernel()) to issue a warning because single-step is used outside the entry_SYSENTER_compat() function. To address this issue, entry_SYSENTER_compat() should use CLEAR_BRANCH_HISTORY after making sure the TF flag is cleared. The problem can be reproduced with the following sequence: $ cat sysenter_step.c int main() { asm("pushf; pop %ax; bts $8,%ax; push %ax; popf; sysenter"); } $ gcc -o sysenter_step sysenter_step.c $ ./sysenter_step Segmentation fault (core dumped) The program is expected to crash, and the #DB handler will issue a warning. Kernel log: WARNING: CPU: 27 PID: 7000 at arch/x86/kernel/traps.c:1009 exc_debug_kernel+0xd2/0x160 ... RIP: 0010:exc_debug_kernel+0xd2/0x160 ... Call Trace: <#DB> ? show_regs+0x68/0x80 ? __warn+0x8c/0x140 ? exc_debug_kernel+0xd2/0x160 ? report_bug+0x175/0x1a0 ? handle_bug+0x44/0x90 ? exc_invalid_op+0x1c/0x70 ? asm_exc_invalid_op+0x1f/0x30 ? exc_debug_kernel+0xd2/0x160 exc_debug+0x43/0x50 asm_exc_debug+0x1e/0x40 RIP: 0010:clear_bhb_loop+0x0/0xb0 ... </#DB> <TASK> ? entry_SYSENTER_compat_after_hwframe+0x6e/0x8d </TASK> [ bp: Massage commit message. ] | |
Title | x86/bhi: Avoid warning in #DB handler due to BHI mitigation | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2024-08-07T15:14:27.977Z
Updated: 2024-12-19T09:14:39.919Z
Reserved: 2024-07-30T07:40:12.253Z
Link: CVE-2024-42240
Updated: 2024-09-11T12:42:24.229Z
Status : Analyzed
Published: 2024-08-07T16:15:46.810
Modified: 2024-08-08T14:53:59.897
Link: CVE-2024-42240