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"cpe:/o:redhat:rhel_eus:8.6", "package": "kernel-0:4.18.0-372.51.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-04-04T00:00:00Z"}, {"advisory": "RHSA-2023:1660", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-04-05T00:00:00Z"}, {"advisory": "RHSA-2023:1470", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.22.2.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-03-27T00:00:00Z"}, {"advisory": "RHSA-2023:1469", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-162.22.2.rt21.186.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-03-27T00:00:00Z"}, {"advisory": "RHSA-2023:1470", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.22.2.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-03-27T00:00:00Z"}, {"advisory": "RHSA-2023:1471", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-03-27T00:00:00Z"}, {"advisory": "RHSA-2023:1202", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.49.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-03-14T00:00:00Z"}, {"advisory": "RHSA-2023:1203", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.49.1.rt21.120.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-03-14T00:00:00Z"}, {"advisory": "RHSA-2023:1435", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-03-23T00:00:00Z"}, {"advisory": "RHSA-2023:1554", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.51.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-04-04T00:00:00Z"}, {"advisory": "RHSA-2023:1677", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.5.3-202304051438_8.6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-04-10T00:00:00Z"}], "bugzilla": {"description": "ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF", "id": "2163379", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2163379"}, "csaw": true, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel.\u00a0SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit\u00a056b88b50565cd8b946a2d00b0c83927b7ebb055e", "A use-after-free flaw was found in snd_ctl_elem_read in sound/core/control.c in Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. In this flaw a normal privileged, local attacker may impact the system due to a locking issue in the compat path, leading to a kernel information leak problem."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, skip loading (blacklist) the affected soundcard using modules like:\nblacklist soundcore\nblacklist snd\nblacklist snd_pcm\nblacklist snd_hda_codec_hdmi\nblacklist snd_hda_codec_realtek\nblacklist snd_hda_codec_generic\nblacklist snd_hda_intel\nblacklist snd_hda_codec\nblacklist snd_hda_core\nblacklist snd_hwdep\nblacklist snd_timer\nonto the system till we have a fix available. \nThis can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~"}, "name": "CVE-2023-0266", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2023-01-13T06:30:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-0266\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-0266\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56b88b50565cd8b946a2d00b0c83927b7ebb055e\nhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog"], "threat_severity": "Important"}