{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49440", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.570Z", "datePublished": "2025-02-26T02:12:53.988Z", "dateUpdated": "2025-05-04T08:37:42.677Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:37:42.677Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: Keep MSR[RI] set when calling RTAS\n\nRTAS runs in real mode (MSR[DR] and MSR[IR] unset) and in 32-bit big\nendian mode (MSR[SF,LE] unset).\n\nThe change in MSR is done in enter_rtas() in a relatively complex way,\nsince the MSR value could be hardcoded.\n\nFurthermore, a panic has been reported when hitting the watchdog interrupt\nwhile running in RTAS, this leads to the following stack trace:\n\n watchdog: CPU 24 Hard LOCKUP\n watchdog: CPU 24 TB:997512652051031, last heartbeat TB:997504470175378 (15980ms ago)\n ...\n Supported: No, Unreleased kernel\n CPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\n NIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\n REGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\n MSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\n CFAR: 000000000000011c IRQMASK: 1\n GPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\n GPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\n GPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\n GPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\n GPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\n GPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\n GPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\n GPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\n NIP [000000001fb41050] 0x1fb41050\n LR [000000001fb4104c] 0x1fb4104c\n Call Trace:\n Instruction dump:\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n Oops: Unrecoverable System Reset, sig: 6 [#1]\n LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries\n ...\n Supported: No, Unreleased kernel\n CPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\n NIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\n REGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\n MSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\n CFAR: 000000000000011c IRQMASK: 1\n GPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\n GPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\n GPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\n GPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\n GPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\n GPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\n GPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\n GPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\n NIP [000000001fb41050] 0x1fb41050\n LR [000000001fb4104c] 0x1fb4104c\n Call Trace:\n Instruction dump:\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n ---[ end trace 3ddec07f638c34a2 ]---\n\nThis happens because MSR[RI] is unset when entering RTAS but there is no\nvalid reason to not set it here.\n\nRTAS is expected to be called with MSR[RI] as specified in PAPR+ section\n\"7.2.1 Machine State\":\n\n R1\u20137.2.1\u20139. If called with MSR[RI] equal to 1, then RTAS must protect\n its own critical regions from recursion by setting the MSR[RI] bit to\n 0 when in the critical regions.\n\nFixing this by reviewing the way MSR is compute before calling RTAS. Now a\nhardcoded value meaning real \n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/powerpc/kernel/entry_64.S", "arch/powerpc/kernel/rtas.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5ca40fcf0da0ce2b5bc44e7d8b036535955f2e3d", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5f4367448f6817c8a0e94dc9736ed84fa8eee4a3", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c9c41f0273826a13ac93124e66a4ff45df281ba0", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "b6b1c3ce06ca438eb24e0f45bf0e63ecad0369f5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/powerpc/kernel/entry_64.S", "arch/powerpc/kernel/rtas.c"], "versions": [{"version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.17.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5ca40fcf0da0ce2b5bc44e7d8b036535955f2e3d"}, {"url": "https://git.kernel.org/stable/c/5f4367448f6817c8a0e94dc9736ed84fa8eee4a3"}, {"url": "https://git.kernel.org/stable/c/c9c41f0273826a13ac93124e66a4ff45df281ba0"}, {"url": "https://git.kernel.org/stable/c/b6b1c3ce06ca438eb24e0f45bf0e63ecad0369f5"}], "title": "powerpc/rtas: Keep MSR[RI] set when calling RTAS", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: Keep MSR[RI] set when calling RTAS\n\nRTAS runs in real mode (MSR[DR] and MSR[IR] unset) and in 32-bit big\nendian mode (MSR[SF,LE] unset).\n\nThe change in MSR is done in enter_rtas() in a relatively complex way,\nsince the MSR value could be hardcoded.\n\nFurthermore, a panic has been reported when hitting the watchdog interrupt\nwhile running in RTAS, this leads to the following stack trace:\n\n watchdog: CPU 24 Hard LOCKUP\n watchdog: CPU 24 TB:997512652051031, last heartbeat TB:997504470175378 (15980ms ago)\n ...\n Supported: No, Unreleased kernel\n CPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\n NIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\n REGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\n MSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\n CFAR: 000000000000011c IRQMASK: 1\n GPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\n GPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\n GPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\n GPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\n GPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\n GPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\n GPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\n GPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\n NIP [000000001fb41050] 0x1fb41050\n LR [000000001fb4104c] 0x1fb4104c\n Call Trace:\n Instruction dump:\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n Oops: Unrecoverable System Reset, sig: 6 [#1]\n LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries\n ...\n Supported: No, Unreleased kernel\n CPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\n NIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\n REGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\n MSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\n CFAR: 000000000000011c IRQMASK: 1\n GPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\n GPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\n GPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\n GPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\n GPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\n GPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\n GPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\n GPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\n NIP [000000001fb41050] 0x1fb41050\n LR [000000001fb4104c] 0x1fb4104c\n Call Trace:\n Instruction dump:\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n ---[ end trace 3ddec07f638c34a2 ]---\n\nThis happens because MSR[RI] is unset when entering RTAS but there is no\nvalid reason to not set it here.\n\nRTAS is expected to be called with MSR[RI] as specified in PAPR+ section\n\"7.2.1 Machine State\":\n\n R1\u20137.2.1\u20139. If called with MSR[RI] equal to 1, then RTAS must protect\n its own critical regions from recursion by setting the MSR[RI] bit to\n 0 when in the critical regions.\n\nFixing this by reviewing the way MSR is compute before calling RTAS. Now a\nhardcoded value meaning real \n---truncated---"}], "id": "CVE-2022-49440", "lastModified": "2025-02-26T07:01:20.430", "metrics": {}, "published": "2025-02-26T07:01:20.430", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ca40fcf0da0ce2b5bc44e7d8b036535955f2e3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f4367448f6817c8a0e94dc9736ed84fa8eee4a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b6b1c3ce06ca438eb24e0f45bf0e63ecad0369f5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c9c41f0273826a13ac93124e66a4ff45df281ba0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: powerpc/rtas: Keep MSR[RI] set when calling RTAS", "id": "2348108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348108"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\npowerpc/rtas: Keep MSR[RI] set when calling RTAS\nRTAS runs in real mode (MSR[DR] and MSR[IR] unset) and in 32-bit big\nendian mode (MSR[SF,LE] unset).\nThe change in MSR is done in enter_rtas() in a relatively complex way,\nsince the MSR value could be hardcoded.\nFurthermore, a panic has been reported when hitting the watchdog interrupt\nwhile running in RTAS, this leads to the following stack trace:\nwatchdog: CPU 24 Hard LOCKUP\nwatchdog: CPU 24 TB:997512652051031, last heartbeat TB:997504470175378 (15980ms ago)\n...\nSupported: No, Unreleased kernel\nCPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\nNIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\nREGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\nMSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\nCFAR: 000000000000011c IRQMASK: 1\nGPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\nGPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\nGPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\nGPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\nGPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\nGPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\nGPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\nGPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\nNIP [000000001fb41050] 0x1fb41050\nLR [000000001fb4104c] 0x1fb4104c\nCall Trace:\nInstruction dump:\nXXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\nXXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\nOops: Unrecoverable System Reset, sig: 6 [#1]\nLE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries\n...\nSupported: No, Unreleased kernel\nCPU: 24 PID: 87504 Comm: drmgr Kdump: loaded Tainted: G E X 5.14.21-150400.71.1.bz196362_2-default #1 SLE15-SP4 (unreleased) 0d821077ef4faa8dfaf370efb5fdca1fa35f4e2c\nNIP: 000000001fb41050 LR: 000000001fb4104c CTR: 0000000000000000\nREGS: c00000000fc33d60 TRAP: 0100 Tainted: G E X (5.14.21-150400.71.1.bz196362_2-default)\nMSR: 8000000002981000 <SF,VEC,VSX,ME> CR: 48800002 XER: 20040020\nCFAR: 000000000000011c IRQMASK: 1\nGPR00: 0000000000000003 ffffffffffffffff 0000000000000001 00000000000050dc\nGPR04: 000000001ffb6100 0000000000000020 0000000000000001 000000001fb09010\nGPR08: 0000000020000000 0000000000000000 0000000000000000 0000000000000000\nGPR12: 80040000072a40a8 c00000000ff8b680 0000000000000007 0000000000000034\nGPR16: 000000001fbf6e94 000000001fbf6d84 000000001fbd1db0 000000001fb3f008\nGPR20: 000000001fb41018 ffffffffffffffff 000000000000017f fffffffffffff68f\nGPR24: 000000001fb18fe8 000000001fb3e000 000000001fb1adc0 000000001fb1cf40\nGPR28: 000000001fb26000 000000001fb460f0 000000001fb17f18 000000001fb17000\nNIP [000000001fb41050] 0x1fb41050\nLR [000000001fb4104c] 0x1fb4104c\nCall Trace:\nInstruction dump:\nXXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\nXXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX\n---[ end trace 3ddec07f638c34a2 ]---\nThis happens because MSR[RI] is unset when entering RTAS but there is no\nvalid reason to not set it here.\nRTAS is expected to be called with MSR[RI] as specified in PAPR+ section\n\"7.2.1 Machine State\":\nR1\u20137.2.1\u20139. If called with MSR[RI] equal to 1, then RTAS must protect\nits own critical regions from recursion by setting the MSR[RI] bit to\n0 when in the critical regions.\nFixing this by reviewing the way MSR is compute before calling RTAS. Now a\nhardcoded value meaning real \n---truncated---"], "name": "CVE-2022-49440", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49440\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49440\nhttps://lore.kernel.org/linux-cve-announce/2025022657-CVE-2022-49440-6751@gregkh/T"], "threat_severity": "Moderate"}