{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48990","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-22T01:27:53.635Z","datePublished":"2024-10-21T20:06:07.203Z","dateUpdated":"2026-08-05T08:53:19.510Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:53:19.510Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free during gpu recovery\n\n[Why]\n    [  754.862560] refcount_t: underflow; use-after-free.\n    [  754.862898] Call Trace:\n    [  754.862903]  <TASK>\n    [  754.862913]  amdgpu_job_free_cb+0xc2/0xe1 [amdgpu]\n    [  754.863543]  drm_sched_main.cold+0x34/0x39 [amd_sched]\n\n[How]\n    The fw_fence may be not init, check whether dma_fence_init\n    is performed before job free"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - Reachable only via local AMDGPU DRM paths on /dev/dri/renderD* (AMDGPU_CS submission and context/entity teardown into amdgpu_job_free_cb); there is no network or adjacent-protocol entry into the GPU scheduler job free path.\nAC:L - An attacker fully controls both sides—queue jobs then destroy the context/process (drm_sched_entity_kill → free_job on never-run jobs), or hang the GPU to force recovery so skipped jobs hit free_cb without dma_fence_init—so the uninitialized hw_fence put is deterministic with no attacker-uncontrollable race.\nPR:L - AMDGPU_CS/CTX are DRM_AUTH|DRM_RENDER_ALLOW; any unprivileged user with render-node access (render/video group, desktop sessions, Android GPU apps) can open /dev/dri/renderD* and submit/teardown work without CAP_SYS_ADMIN or real root.\nUI:N - The attacker opens the render node and issues AMDGPU_CS/context destroy (or triggers a hang) entirely from their own process; no separate victim action is required.\nS:U - Impact is confined to the host kernel’s security authority (local job/fence lifetime corruption in amdgpu); there is no VM escape, IOMMU bypass, or other cross-boundary scope change.\nC:H - The kernel classifies this as use-after-free (refcount_t underflow on the embedded hw_fence in amdgpu_job_free_cb); per UAF guidance, reclaim/spray of the corrupted job/fence lifetime enables arbitrary kernel read primitives.\nI:H - The same UAF-class fence/job free-path corruption (putting an uninitialized or incorrectly lifetime-managed hw_fence) enables heap corruption suitable for arbitrary write and control-flow hijack, matching prior amdgpu UAF scoring.\nA:H - The demonstrated effect is a kernel WARNING/refcount underflow use-after-free in amdgpu_job_free_cb (and can panic under panic_on_warn), and the bad free path can oops or destabilize GPU recovery/teardown, which is High availability impact."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdgpu/amdgpu_job.c"],"versions":[{"version":"f6a3f66063ca39e7ee5fcee59e889c5ec4de9dc0","lessThan":"d2a89cd942edd50c1e652004fd64019be78b0a96","status":"affected","versionType":"git"},{"version":"f6a3f66063ca39e7ee5fcee59e889c5ec4de9dc0","lessThan":"3cb93f390453cde4d6afda1587aaa00e75e09617","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/gpu/drm/amd/amdgpu/amdgpu_job.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.0.13","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":"6.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d2a89cd942edd50c1e652004fd64019be78b0a96"},{"url":"https://git.kernel.org/stable/c/3cb93f390453cde4d6afda1587aaa00e75e09617"}],"title":"drm/amdgpu: fix use-after-free during gpu recovery","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48990","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:16:41.708497Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-22T13:18:42.361Z"}}]}}