{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49844","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-01T14:05:17.229Z","datePublished":"2025-05-01T14:09:58.999Z","dateUpdated":"2026-05-11T19:07:50.983Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:07:50.983Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: dev: fix skb drop check\n\nIn commit a6d190f8c767 (\"can: skb: drop tx skb if in listen only\nmode\") the priv->ctrlmode element is read even on virtual CAN\ninterfaces that do not create the struct can_priv at startup. This\nout-of-bounds read may lead to CAN frame drops for virtual CAN\ninterfaces like vcan and vxcan.\n\nThis patch mainly reverts the original commit and adds a new helper\nfor CAN interface drivers that provide the required information in\nstruct can_priv.\n\n[mkl: patch pch_can, too]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/at91_can.c","drivers/net/can/c_can/c_can_main.c","drivers/net/can/can327.c","drivers/net/can/cc770/cc770.c","drivers/net/can/ctucanfd/ctucanfd_base.c","drivers/net/can/dev/skb.c","drivers/net/can/flexcan/flexcan-core.c","drivers/net/can/grcan.c","drivers/net/can/ifi_canfd/ifi_canfd.c","drivers/net/can/janz-ican3.c","drivers/net/can/kvaser_pciefd.c","drivers/net/can/m_can/m_can.c","drivers/net/can/mscan/mscan.c","drivers/net/can/pch_can.c","drivers/net/can/peak_canfd/peak_canfd.c","drivers/net/can/rcar/rcar_can.c","drivers/net/can/rcar/rcar_canfd.c","drivers/net/can/sja1000/sja1000.c","drivers/net/can/slcan/slcan-core.c","drivers/net/can/softing/softing_main.c","drivers/net/can/spi/hi311x.c","drivers/net/can/spi/mcp251x.c","drivers/net/can/spi/mcp251xfd/mcp251xfd-tx.c","drivers/net/can/sun4i_can.c","drivers/net/can/ti_hecc.c","drivers/net/can/usb/ems_usb.c","drivers/net/can/usb/esd_usb.c","drivers/net/can/usb/etas_es58x/es58x_core.c","drivers/net/can/usb/gs_usb.c","drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c","drivers/net/can/usb/mcba_usb.c","drivers/net/can/usb/peak_usb/pcan_usb_core.c","drivers/net/can/usb/ucan.c","drivers/net/can/usb/usb_8dev.c","drivers/net/can/xilinx_can.c","include/linux/can/dev.h"],"versions":[{"version":"a6d190f8c7670068d8c154ef8477eca07b5e3574","lessThan":"386c49fe31ee748e053860b3bac7794a933ac9ac","status":"affected","versionType":"git"},{"version":"a6d190f8c7670068d8c154ef8477eca07b5e3574","lessThan":"ae64438be1923e3c1102d90fd41db7afcfaf54cc","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/net/can/at91_can.c","drivers/net/can/c_can/c_can_main.c","drivers/net/can/can327.c","drivers/net/can/cc770/cc770.c","drivers/net/can/ctucanfd/ctucanfd_base.c","drivers/net/can/dev/skb.c","drivers/net/can/flexcan/flexcan-core.c","drivers/net/can/grcan.c","drivers/net/can/ifi_canfd/ifi_canfd.c","drivers/net/can/janz-ican3.c","drivers/net/can/kvaser_pciefd.c","drivers/net/can/m_can/m_can.c","drivers/net/can/mscan/mscan.c","drivers/net/can/pch_can.c","drivers/net/can/peak_canfd/peak_canfd.c","drivers/net/can/rcar/rcar_can.c","drivers/net/can/rcar/rcar_canfd.c","drivers/net/can/sja1000/sja1000.c","drivers/net/can/slcan/slcan-core.c","drivers/net/can/softing/softing_main.c","drivers/net/can/spi/hi311x.c","drivers/net/can/spi/mcp251x.c","drivers/net/can/spi/mcp251xfd/mcp251xfd-tx.c","drivers/net/can/sun4i_can.c","drivers/net/can/ti_hecc.c","drivers/net/can/usb/ems_usb.c","drivers/net/can/usb/esd_usb.c","drivers/net/can/usb/etas_es58x/es58x_core.c","drivers/net/can/usb/gs_usb.c","drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c","drivers/net/can/usb/mcba_usb.c","drivers/net/can/usb/peak_usb/pcan_usb_core.c","drivers/net/can/usb/ucan.c","drivers/net/can/usb/usb_8dev.c","drivers/net/can/xilinx_can.c","include/linux/can/dev.h"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.0.9","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","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":"6.0","versionEndExcluding":"6.0.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/386c49fe31ee748e053860b3bac7794a933ac9ac"},{"url":"https://git.kernel.org/stable/c/ae64438be1923e3c1102d90fd41db7afcfaf54cc"}],"title":"can: dev: fix skb drop check","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.1,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:00:29.049207Z","id":"CVE-2022-49844","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T17:00:34.409Z"}}]}}