{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-26893", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.186Z", "datePublished": "2024-04-17T10:27:45.332Z", "dateUpdated": "2024-11-05T09:17:45.161Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:17:45.161Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix double free in SMC transport cleanup path\n\nWhen the generic SCMI code tears down a channel, it calls the chan_free\ncallback function, defined by each transport. Since multiple protocols\nmight share the same transport_info member, chan_free() might want to\nclean up the same member multiple times within the given SCMI transport\nimplementation. In this case, it is SMC transport. This will lead to a NULL\npointer dereference at the second time:\n\n | scmi_protocol scmi_dev.1: Enabled polling mode TX channel - prot_id:16\n | arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.\n | arm-scmi firmware:scmi: unable to communicate with SCMI\n | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n | Mem abort info:\n | ESR = 0x0000000096000004\n | EC = 0x25: DABT (current EL), IL = 32 bits\n | SET = 0, FnV = 0\n | EA = 0, S1PTW = 0\n | FSC = 0x04: level 0 translation fault\n | Data abort info:\n | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n | CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881ef8000\n | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n | Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n | Modules linked in:\n | CPU: 4 PID: 1 Comm: swapper/0 Not tainted 6.7.0-rc2-00124-g455ef3d016c9-dirty #793\n | Hardware name: FVP Base RevC (DT)\n | pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n | pc : smc_chan_free+0x3c/0x6c\n | lr : smc_chan_free+0x3c/0x6c\n | Call trace:\n | smc_chan_free+0x3c/0x6c\n | idr_for_each+0x68/0xf8\n | scmi_cleanup_channels.isra.0+0x2c/0x58\n | scmi_probe+0x434/0x734\n | platform_probe+0x68/0xd8\n | really_probe+0x110/0x27c\n | __driver_probe_device+0x78/0x12c\n | driver_probe_device+0x3c/0x118\n | __driver_attach+0x74/0x128\n | bus_for_each_dev+0x78/0xe0\n | driver_attach+0x24/0x30\n | bus_add_driver+0xe4/0x1e8\n | driver_register+0x60/0x128\n | __platform_driver_register+0x28/0x34\n | scmi_driver_init+0x84/0xc0\n | do_one_initcall+0x78/0x33c\n | kernel_init_freeable+0x2b8/0x51c\n | kernel_init+0x24/0x130\n | ret_from_fork+0x10/0x20\n | Code: f0004701 910a0021 aa1403e5 97b91c70 (b9400280)\n | ---[ end trace 0000000000000000 ]---\n\nSimply check for the struct pointer being NULL before trying to access\nits members, to avoid this situation.\n\nThis was found when a transport doesn't really work (for instance no SMC\nservice), the probe routines then tries to clean up, and triggers a crash."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/arm_scmi/smc.c"], "versions": [{"version": "1dc6558062da", "lessThan": "0d276d9f335f", "status": "affected", "versionType": "git"}, {"version": "1dc6558062da", "lessThan": "857f56db8c3a", "status": "affected", "versionType": "git"}, {"version": "1dc6558062da", "lessThan": "8ffaa17ccb1e", "status": "affected", "versionType": "git"}, {"version": "1dc6558062da", "lessThan": "ead445dd3d68", "status": "affected", "versionType": "git"}, {"version": "1dc6558062da", "lessThan": "f1d71576d2c9", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/firmware/arm_scmi/smc.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/0d276d9f335f41d6524258d58c0c0241ef9a83a4"}, {"url": "https://git.kernel.org/stable/c/857f56db8c3a71f9871922b6984ff74ad588cb2c"}, {"url": "https://git.kernel.org/stable/c/8ffaa17ccb1eb1b65cf85db63225a3581c303773"}, {"url": "https://git.kernel.org/stable/c/ead445dd3d681020af333649a27306160eee761d"}, {"url": "https://git.kernel.org/stable/c/f1d71576d2c9ec8fdb822173fa7f3de79475e9bd"}], "title": "firmware: arm_scmi: Fix double free in SMC transport cleanup path", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-07-16T15:26:07.636666Z", "id": "CVE-2024-26893", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-16T15:26:17.892Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:05.507Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/0d276d9f335f41d6524258d58c0c0241ef9a83a4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/857f56db8c3a71f9871922b6984ff74ad588cb2c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8ffaa17ccb1eb1b65cf85db63225a3581c303773", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ead445dd3d681020af333649a27306160eee761d", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f1d71576d2c9ec8fdb822173fa7f3de79475e9bd", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/0d276d9f335f41d6524258d58c0c0241ef9a83a4", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/857f56db8c3a71f9871922b6984ff74ad588cb2c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8ffaa17ccb1eb1b65cf85db63225a3581c303773", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ead445dd3d681020af333649a27306160eee761d", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f1d71576d2c9ec8fdb822173fa7f3de79475e9bd", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:05.507Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26893", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-07-16T15:26:07.636666Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-16T15:26:14.198Z"}}], "cna": {"title": "firmware: arm_scmi: Fix double free in SMC transport cleanup path", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1dc6558062da", "lessThan": "0d276d9f335f", "versionType": "git"}, {"status": "affected", "version": "1dc6558062da", "lessThan": "857f56db8c3a", "versionType": "git"}, {"status": "affected", "version": "1dc6558062da", "lessThan": "8ffaa17ccb1e", "versionType": "git"}, {"status": "affected", "version": "1dc6558062da", "lessThan": "ead445dd3d68", "versionType": "git"}, {"status": "affected", "version": "1dc6558062da", "lessThan": "f1d71576d2c9", "versionType": "git"}], "programFiles": ["drivers/firmware/arm_scmi/smc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"status": "unaffected", "version": "0", "lessThan": "5.8", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.83", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.23", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.11", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8.2", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/firmware/arm_scmi/smc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/0d276d9f335f41d6524258d58c0c0241ef9a83a4"}, {"url": "https://git.kernel.org/stable/c/857f56db8c3a71f9871922b6984ff74ad588cb2c"}, {"url": "https://git.kernel.org/stable/c/8ffaa17ccb1eb1b65cf85db63225a3581c303773"}, {"url": "https://git.kernel.org/stable/c/ead445dd3d681020af333649a27306160eee761d"}, {"url": "https://git.kernel.org/stable/c/f1d71576d2c9ec8fdb822173fa7f3de79475e9bd"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix double free in SMC transport cleanup path\n\nWhen the generic SCMI code tears down a channel, it calls the chan_free\ncallback function, defined by each transport. Since multiple protocols\nmight share the same transport_info member, chan_free() might want to\nclean up the same member multiple times within the given SCMI transport\nimplementation. In this case, it is SMC transport. This will lead to a NULL\npointer dereference at the second time:\n\n | scmi_protocol scmi_dev.1: Enabled polling mode TX channel - prot_id:16\n | arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.\n | arm-scmi firmware:scmi: unable to communicate with SCMI\n | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n | Mem abort info:\n | ESR = 0x0000000096000004\n | EC = 0x25: DABT (current EL), IL = 32 bits\n | SET = 0, FnV = 0\n | EA = 0, S1PTW = 0\n | FSC = 0x04: level 0 translation fault\n | Data abort info:\n | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n | CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881ef8000\n | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n | Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n | Modules linked in:\n | CPU: 4 PID: 1 Comm: swapper/0 Not tainted 6.7.0-rc2-00124-g455ef3d016c9-dirty #793\n | Hardware name: FVP Base RevC (DT)\n | pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n | pc : smc_chan_free+0x3c/0x6c\n | lr : smc_chan_free+0x3c/0x6c\n | Call trace:\n | smc_chan_free+0x3c/0x6c\n | idr_for_each+0x68/0xf8\n | scmi_cleanup_channels.isra.0+0x2c/0x58\n | scmi_probe+0x434/0x734\n | platform_probe+0x68/0xd8\n | really_probe+0x110/0x27c\n | __driver_probe_device+0x78/0x12c\n | driver_probe_device+0x3c/0x118\n | __driver_attach+0x74/0x128\n | bus_for_each_dev+0x78/0xe0\n | driver_attach+0x24/0x30\n | bus_add_driver+0xe4/0x1e8\n | driver_register+0x60/0x128\n | __platform_driver_register+0x28/0x34\n | scmi_driver_init+0x84/0xc0\n | do_one_initcall+0x78/0x33c\n | kernel_init_freeable+0x2b8/0x51c\n | kernel_init+0x24/0x130\n | ret_from_fork+0x10/0x20\n | Code: f0004701 910a0021 aa1403e5 97b91c70 (b9400280)\n | ---[ end trace 0000000000000000 ]---\n\nSimply check for the struct pointer being NULL before trying to access\nits members, to avoid this situation.\n\nThis was found when a transport doesn't really work (for instance no SMC\nservice), the probe routines then tries to clean up, and triggers a crash."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:17:45.161Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26893", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:17:45.161Z", "dateReserved": "2024-02-19T14:20:24.186Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-17T10:27:45.332Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Fix double free in SMC transport cleanup path\n\nWhen the generic SCMI code tears down a channel, it calls the chan_free\ncallback function, defined by each transport. Since multiple protocols\nmight share the same transport_info member, chan_free() might want to\nclean up the same member multiple times within the given SCMI transport\nimplementation. In this case, it is SMC transport. This will lead to a NULL\npointer dereference at the second time:\n\n | scmi_protocol scmi_dev.1: Enabled polling mode TX channel - prot_id:16\n | arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.\n | arm-scmi firmware:scmi: unable to communicate with SCMI\n | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n | Mem abort info:\n | ESR = 0x0000000096000004\n | EC = 0x25: DABT (current EL), IL = 32 bits\n | SET = 0, FnV = 0\n | EA = 0, S1PTW = 0\n | FSC = 0x04: level 0 translation fault\n | Data abort info:\n | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n | CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n | GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881ef8000\n | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n | Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n | Modules linked in:\n | CPU: 4 PID: 1 Comm: swapper/0 Not tainted 6.7.0-rc2-00124-g455ef3d016c9-dirty #793\n | Hardware name: FVP Base RevC (DT)\n | pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n | pc : smc_chan_free+0x3c/0x6c\n | lr : smc_chan_free+0x3c/0x6c\n | Call trace:\n | smc_chan_free+0x3c/0x6c\n | idr_for_each+0x68/0xf8\n | scmi_cleanup_channels.isra.0+0x2c/0x58\n | scmi_probe+0x434/0x734\n | platform_probe+0x68/0xd8\n | really_probe+0x110/0x27c\n | __driver_probe_device+0x78/0x12c\n | driver_probe_device+0x3c/0x118\n | __driver_attach+0x74/0x128\n | bus_for_each_dev+0x78/0xe0\n | driver_attach+0x24/0x30\n | bus_add_driver+0xe4/0x1e8\n | driver_register+0x60/0x128\n | __platform_driver_register+0x28/0x34\n | scmi_driver_init+0x84/0xc0\n | do_one_initcall+0x78/0x33c\n | kernel_init_freeable+0x2b8/0x51c\n | kernel_init+0x24/0x130\n | ret_from_fork+0x10/0x20\n | Code: f0004701 910a0021 aa1403e5 97b91c70 (b9400280)\n | ---[ end trace 0000000000000000 ]---\n\nSimply check for the struct pointer being NULL before trying to access\nits members, to avoid this situation.\n\nThis was found when a transport doesn't really work (for instance no SMC\nservice), the probe routines then tries to clean up, and triggers a crash."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firmware: arm_scmi: Correcci\u00f3n de doble liberaci\u00f3n en la ruta de limpieza del transporte SMC Cuando el c\u00f3digo SCMI gen\u00e9rico destruye un canal, llama a la funci\u00f3n de devoluci\u00f3n de llamada chan_free, definida por cada transporte. Dado que varios protocolos pueden compartir el mismo miembro transport_info, es posible que chan_free() desee limpiar el mismo miembro varias veces dentro de la implementaci\u00f3n de transporte SCMI determinada. En este caso se trata de transporte SMC. Esto dar\u00e1 lugar a una desreferencia del puntero NULL la segunda vez: | scmi_protocol scmi_dev.1: Canal TX en modo de sondeo habilitado - prot_id:16 | firmware arm-scmi: scmi: Notificaciones SCMI: n\u00facleo habilitado. | firmware arm-scmi: scmi: no se puede comunicar con SCMI | No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000000 | Informaci\u00f3n de cancelaci\u00f3n de memoria: | ESR = 0x0000000096000004 | EC = 0x25: DABT (EL actual), IL = 32 bits | CONJUNTO = 0, FnV = 0 | EA = 0, S1PTW = 0 | FSC = 0x04: error de traducci\u00f3n de nivel 0 | Informaci\u00f3n de cancelaci\u00f3n de datos: | ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 | CM = 0, WnR = 0, TnD = 0, Acceso a etiquetas = 0 | GCS = 0, Superposici\u00f3n = 0, DirtyBit = 0, Xs = 0 | pgtable de usuario: p\u00e1ginas de 4k, VA de 48 bits, pgdp=0000000881ef8000 | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 | Error interno: Ups: 0000000096000004 [#1] SMP ANTICIPADO | M\u00f3dulos enlazados en: | CPU: 4 PID: 1 Comunicaciones: swapper/0 No contaminado 6.7.0-rc2-00124-g455ef3d016c9-dirty #793 | Nombre del hardware: FVP Base RevC (DT) | pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) | ordenador personal: smc_chan_free+0x3c/0x6c | lr: smc_chan_free+0x3c/0x6c | Rastreo de llamadas: | smc_chan_free+0x3c/0x6c | idr_for_each+0x68/0xf8 | scmi_cleanup_channels.isra.0+0x2c/0x58 | scmi_probe+0x434/0x734 | sonda_plataforma+0x68/0xd8 | realmente_probe+0x110/0x27c | __driver_probe_device+0x78/0x12c | dispositivo_sonda_controlador+0x3c/0x118 | __driver_attach+0x74/0x128 | bus_for_each_dev+0x78/0xe0 | driver_attach+0x24/0x30 | bus_add_driver+0xe4/0x1e8 | registro_controlador+0x60/0x128 | __platform_driver_register+0x28/0x34 | scmi_driver_init+0x84/0xc0 | do_one_initcall+0x78/0x33c | kernel_init_freeable+0x2b8/0x51c | kernel_init+0x24/0x130 | ret_from_fork+0x10/0x20 | C\u00f3digo: f0004701 910a0021 aa1403e5 97b91c70 (b9400280) | ---[ end trace 0000000000000000 ]--- Simplemente verifique que el puntero de estructura sea NULL antes de intentar acceder a sus miembros, para evitar esta situaci\u00f3n. Esto se encontr\u00f3 cuando un transporte realmente no funciona (por ejemplo, sin servicio SMC), las rutinas de la sonda intentan limpiarse y provocan un bloqueo."}], "id": "CVE-2024-26893", "lastModified": "2024-04-17T12:48:07.510", "metrics": {}, "published": "2024-04-17T11:15:10.577", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d276d9f335f41d6524258d58c0c0241ef9a83a4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/857f56db8c3a71f9871922b6984ff74ad588cb2c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ffaa17ccb1eb1b65cf85db63225a3581c303773"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ead445dd3d681020af333649a27306160eee761d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f1d71576d2c9ec8fdb822173fa7f3de79475e9bd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: firmware: arm_scmi: Fix double free in SMC transport cleanup path", "id": "2275664", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275664"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-415", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfirmware: arm_scmi: Fix double free in SMC transport cleanup path\nWhen the generic SCMI code tears down a channel, it calls the chan_free\ncallback function, defined by each transport. Since multiple protocols\nmight share the same transport_info member, chan_free() might want to\nclean up the same member multiple times within the given SCMI transport\nimplementation. In this case, it is SMC transport. This will lead to a NULL\npointer dereference at the second time:\n| scmi_protocol scmi_dev.1: Enabled polling mode TX channel - prot_id:16\n| arm-scmi firmware:scmi: SCMI Notifications - Core Enabled.\n| arm-scmi firmware:scmi: unable to communicate with SCMI\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n| Mem abort info:\n| ESR = 0x0000000096000004\n| EC = 0x25: DABT (current EL), IL = 32 bits\n| SET = 0, FnV = 0\n| EA = 0, S1PTW = 0\n| FSC = 0x04: level 0 translation fault\n| Data abort info:\n| ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n| CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n| GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n| user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881ef8000\n| [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n| Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n| Modules linked in:\n| CPU: 4 PID: 1 Comm: swapper/0 Not tainted 6.7.0-rc2-00124-g455ef3d016c9-dirty #793\n| Hardware name: FVP Base RevC (DT)\n| pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n| pc : smc_chan_free+0x3c/0x6c\n| lr : smc_chan_free+0x3c/0x6c\n| Call trace:\n| smc_chan_free+0x3c/0x6c\n| idr_for_each+0x68/0xf8\n| scmi_cleanup_channels.isra.0+0x2c/0x58\n| scmi_probe+0x434/0x734\n| platform_probe+0x68/0xd8\n| really_probe+0x110/0x27c\n| __driver_probe_device+0x78/0x12c\n| driver_probe_device+0x3c/0x118\n| __driver_attach+0x74/0x128\n| bus_for_each_dev+0x78/0xe0\n| driver_attach+0x24/0x30\n| bus_add_driver+0xe4/0x1e8\n| driver_register+0x60/0x128\n| __platform_driver_register+0x28/0x34\n| scmi_driver_init+0x84/0xc0\n| do_one_initcall+0x78/0x33c\n| kernel_init_freeable+0x2b8/0x51c\n| kernel_init+0x24/0x130\n| ret_from_fork+0x10/0x20\n| Code: f0004701 910a0021 aa1403e5 97b91c70 (b9400280)\n| ---[ end trace 0000000000000000 ]---\nSimply check for the struct pointer being NULL before trying to access\nits members, to avoid this situation.\nThis was found when a transport doesn't really work (for instance no SMC\nservice), the probe routines then tries to clean up, and triggers a crash."], "name": "CVE-2024-26893", "package_state": [{"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2024-04-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26893\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26893\nhttps://lore.kernel.org/linux-cve-announce/2024041743-CVE-2024-26893-34df@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 6.1.83, kernel 6.6.23, kernel 6.7.11, kernel 6.8.2, kernel 6.9-rc1"}