{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-48739","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-06-20T11:09:39.054Z","datePublished":"2024-06-20T11:13:24.693Z","dateUpdated":"2026-08-05T08:52:03.510Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:52:03.510Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: hdmi-codec: Fix OOB memory accesses\n\nCorrect size of iec_status array by changing it to the size of status\narray of the struct snd_aes_iec958. This fixes out-of-bounds slab\nread accesses made by memcpy() of the hdmi-codec driver. This problem\nis reported by KASAN."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The OOB read is reached via local ALSA PCM ioctls (open /dev/snd/pcmC*D*p → SNDRV_PCM_IOCTL_HW_PARAMS/PREPARE → ASoC → hdmi_codec_hw_params/prepare), not via network packets or physical HDMI signaling.\nAC:L - An attacker who can open the HDMI PCM device can reliably trigger the 24-byte memcpy from the 5-byte iec_status array; no race or attacker-uncontrollable state is required beyond the device being present.\nPR:L - ALSA PCM/control nodes are usable by ordinary unprivileged users with audio-group or session ACL access (typical on desktops, SBCs, and Android), and the ASoC path has no CAP_* checks requiring real root.\nUI:N - The attacker opens the HDMI playback PCM and issues hw_params/prepare themselves; no separate victim action is required.\nS:U - Impact is confined to the local kernel (slab OOB read / possible oops); this is not a VM escape, IOMMU bypass, or other security-authority boundary cross.\nC:H - hdmi_codec_hw_params/prepare memcpy sizeof(hp.iec.status) (24) from iec_status[5], reading 19 adjacent slab bytes past the object end into kernel memory; guidance treats such OOB slab reads as High confidentiality impact.\nI:N - The bug is a read-only out-of-bounds access; the control put path copies only sizeof(iec_status) (5 bytes) and there is no OOB write or control-flow hijack primitive.\nA:H - Reading past the end of the kmalloc'd hdmi_codec_priv slab object can fault on unmapped/poisoned memory and oops/panic the kernel, as reflected by the KASAN slab-out-of-bounds report."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/uapi/sound/asound.h","sound/soc/codecs/hdmi-codec.c"],"versions":[{"version":"7a8e1d44211e16eb394b7b9e0b236ee1503a3ad3","lessThan":"10007bd96b6c4c3cfaea9e76c311b06a07a5e260","status":"affected","versionType":"git"},{"version":"7a8e1d44211e16eb394b7b9e0b236ee1503a3ad3","lessThan":"1552e66be325a21d7eff49f46013fb402165a0ac","status":"affected","versionType":"git"},{"version":"7a8e1d44211e16eb394b7b9e0b236ee1503a3ad3","lessThan":"06feec6005c9d9500cd286ec440aabf8b2ddd94d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/uapi/sound/asound.h","sound/soc/codecs/hdmi-codec.c"],"versions":[{"version":"5.14","status":"affected"},{"version":"0","lessThan":"5.14","status":"unaffected","versionType":"semver"},{"version":"5.15.22","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.16.8","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17","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":"5.14","versionEndExcluding":"5.15.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.16.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/10007bd96b6c4c3cfaea9e76c311b06a07a5e260"},{"url":"https://git.kernel.org/stable/c/1552e66be325a21d7eff49f46013fb402165a0ac"},{"url":"https://git.kernel.org/stable/c/06feec6005c9d9500cd286ec440aabf8b2ddd94d"}],"title":"ASoC: hdmi-codec: Fix OOB memory accesses","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:24:59.935Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/10007bd96b6c4c3cfaea9e76c311b06a07a5e260","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1552e66be325a21d7eff49f46013fb402165a0ac","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/06feec6005c9d9500cd286ec440aabf8b2ddd94d","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48739","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:10:44.552131Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:34:48.539Z"}}]}}