266 lines
13 KiB
JSON
266 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-42240",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-30T07:40:12.253Z",
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"datePublished": "2024-08-07T15:14:27.977Z",
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"dateUpdated": "2026-05-23T15:52:28.123Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-23T15:52:28.123Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/bhi: Avoid warning in #DB handler due to BHI mitigation\n\nWhen BHI mitigation is enabled, if SYSENTER is invoked with the TF flag set\nthen entry_SYSENTER_compat() uses CLEAR_BRANCH_HISTORY and calls the\nclear_bhb_loop() before the TF flag is cleared. This causes the #DB handler\n(exc_debug_kernel()) to issue a warning because single-step is used outside the\nentry_SYSENTER_compat() function.\n\nTo address this issue, entry_SYSENTER_compat() should use CLEAR_BRANCH_HISTORY\nafter making sure the TF flag is cleared.\n\nThe problem can be reproduced with the following sequence:\n\n $ cat sysenter_step.c\n int main()\n { asm(\"pushf; pop %ax; bts $8,%ax; push %ax; popf; sysenter\"); }\n\n $ gcc -o sysenter_step sysenter_step.c\n\n $ ./sysenter_step\n Segmentation fault (core dumped)\n\nThe program is expected to crash, and the #DB handler will issue a warning.\n\nKernel log:\n\n WARNING: CPU: 27 PID: 7000 at arch/x86/kernel/traps.c:1009 exc_debug_kernel+0xd2/0x160\n ...\n RIP: 0010:exc_debug_kernel+0xd2/0x160\n ...\n Call Trace:\n <#DB>\n ? show_regs+0x68/0x80\n ? __warn+0x8c/0x140\n ? exc_debug_kernel+0xd2/0x160\n ? report_bug+0x175/0x1a0\n ? handle_bug+0x44/0x90\n ? exc_invalid_op+0x1c/0x70\n ? asm_exc_invalid_op+0x1f/0x30\n ? exc_debug_kernel+0xd2/0x160\n exc_debug+0x43/0x50\n asm_exc_debug+0x1e/0x40\n RIP: 0010:clear_bhb_loop+0x0/0xb0\n ...\n </#DB>\n <TASK>\n ? entry_SYSENTER_compat_after_hwframe+0x6e/0x8d\n </TASK>\n\n [ bp: Massage commit message. ]"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/x86/entry/entry_64_compat.S"
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],
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"versions": [
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{
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"version": "bd53ec80f21839cfd4d852a6088279d602d67e5b",
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"lessThan": "db56615e96c439e13783d7715330e824b4fd4b84",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "07dbb10f153f483e8249acebdffedf922e2ec2e1",
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"lessThan": "a765679defe1dc1b8fa01928a6ad6361e72a1364",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "eb36b0dce2138581bc6b5e39d0273cb4c96ded81",
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"lessThan": "dae3543db8f0cf8ac1a198c3bb4b6e3c24d576cf",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7390db8aea0d64e9deb28b8e1ce716f5020c7ee5",
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"lessThan": "08518d48e5b744620524f0acd7c26c19bda7f513",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7390db8aea0d64e9deb28b8e1ce716f5020c7ee5",
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"lessThan": "ac8b270b61d48fcc61f052097777e3b5e11591e0",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "8f51637712e4da5be410a1666f8aee0d86eef898",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5.15.154",
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"lessThan": "5.15.163",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.85",
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"lessThan": "6.1.100",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.26",
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"lessThan": "6.6.41",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.8.5",
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"lessThan": "6.9",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"arch/x86/entry/entry_64_compat.S"
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],
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"versions": [
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{
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"version": "6.9",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.9",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.163",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.100",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.41",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.10",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15.154",
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"versionEndExcluding": "5.15.163"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1.85",
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"versionEndExcluding": "6.1.100"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6.26",
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"versionEndExcluding": "6.6.41"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "6.9.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "6.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.8.5"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/db56615e96c439e13783d7715330e824b4fd4b84"
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},
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{
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"url": "https://git.kernel.org/stable/c/a765679defe1dc1b8fa01928a6ad6361e72a1364"
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},
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{
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"url": "https://git.kernel.org/stable/c/dae3543db8f0cf8ac1a198c3bb4b6e3c24d576cf"
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},
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{
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"url": "https://git.kernel.org/stable/c/08518d48e5b744620524f0acd7c26c19bda7f513"
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},
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{
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"url": "https://git.kernel.org/stable/c/ac8b270b61d48fcc61f052097777e3b5e11591e0"
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}
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],
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"title": "x86/bhi: Avoid warning in #DB handler due to BHI mitigation",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-42240",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:13:51.001454Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-11T17:34:31.693Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T22:02:42.210Z"
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}
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}
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]
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}
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} |