{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "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": "2026-05-11T20:06:27.416Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:06:27.416Z" }, "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": "1dc6558062dadfabd2fb3bd885fa6e92ec7196f2", "lessThan": "0d276d9f335f41d6524258d58c0c0241ef9a83a4", "status": "affected", "versionType": "git" }, { "version": "1dc6558062dadfabd2fb3bd885fa6e92ec7196f2", "lessThan": "857f56db8c3a71f9871922b6984ff74ad588cb2c", "status": "affected", "versionType": "git" }, { "version": "1dc6558062dadfabd2fb3bd885fa6e92ec7196f2", "lessThan": "8ffaa17ccb1eb1b65cf85db63225a3581c303773", "status": "affected", "versionType": "git" }, { "version": "1dc6558062dadfabd2fb3bd885fa6e92ec7196f2", "lessThan": "ead445dd3d681020af333649a27306160eee761d", "status": "affected", "versionType": "git" }, { "version": "1dc6558062dadfabd2fb3bd885fa6e92ec7196f2", "lessThan": "f1d71576d2c9ec8fdb822173fa7f3de79475e9bd", "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" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.8.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.9" } ] } ] } ], "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-1.2.0" } }, "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" ] } ] } ] } }