{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63797", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.012Z", "datePublished": "2026-07-19T12:02:05.227Z", "dateUpdated": "2026-07-19T12:02:05.227Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T12:02:05.227Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: char: Fix use-after-free on probe error path\n\nrpmsg_chrdev_probe() stores the newly allocated eptdev in the default\nendpoint's priv pointer before calling rpmsg_chrdev_eptdev_add(). If\nrpmsg_chrdev_eptdev_add() then fails, its error path frees eptdev while\nthe default endpoint may still dispatch callbacks with the stale priv\npointer.\n\nAvoid publishing eptdev through the default endpoint until\nrpmsg_chrdev_eptdev_add() succeeds. Messages received before the priv\npointer is published should be ignored by rpmsg_ept_cb(). Flow-control\nupdates can hit rpmsg_ept_flow_cb() in the same window, so make both\ncallbacks return success when priv is NULL."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/rpmsg/rpmsg_char.c"], "versions": [{"version": "bc69d10665690492421d926b1cd9a7a36bffd691", "lessThan": "ddf13f91ca82c94ef7ad9c41a434a03313f8eb1b", "status": "affected", "versionType": "git"}, {"version": "bc69d10665690492421d926b1cd9a7a36bffd691", "lessThan": "c5ebb06c7e24d531b68707168e04698859d642bc", "status": "affected", "versionType": "git"}, {"version": "bc69d10665690492421d926b1cd9a7a36bffd691", "lessThan": "104d100212396801f1d9d388282f746e23e2bfd6", "status": "affected", "versionType": "git"}, {"version": "bc69d10665690492421d926b1cd9a7a36bffd691", "lessThan": "ff268cd9ccbce6472a0658791b417bf11c31ee39", "status": "affected", "versionType": "git"}, {"version": "bc69d10665690492421d926b1cd9a7a36bffd691", "lessThan": "1ff3f528e67d20e2b1483dcaba899dc7832b2e6b", "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/rpmsg/rpmsg_char.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.144", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.95", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.38", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.3", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "5.18", "versionEndExcluding": "6.6.144"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.12.95"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.18.38"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.1.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ddf13f91ca82c94ef7ad9c41a434a03313f8eb1b"}, {"url": "https://git.kernel.org/stable/c/c5ebb06c7e24d531b68707168e04698859d642bc"}, {"url": "https://git.kernel.org/stable/c/104d100212396801f1d9d388282f746e23e2bfd6"}, {"url": "https://git.kernel.org/stable/c/ff268cd9ccbce6472a0658791b417bf11c31ee39"}, {"url": "https://git.kernel.org/stable/c/1ff3f528e67d20e2b1483dcaba899dc7832b2e6b"}], "title": "rpmsg: char: Fix use-after-free on probe error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

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