-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2021:2732-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2732 Issue date: 2021-07-20 CVE Names: CVE-2020-28374 CVE-2021-3347 CVE-2021-33034 CVE-2021-33909 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909) * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) * kernel: Use after free via PI futex state (CVE-2021-3347) * kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state 1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan 1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: kernel-3.10.0-693.90.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.90.2.el7.noarch.rpm kernel-doc-3.10.0-693.90.2.el7.noarch.rpm x86_64: kernel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-headers-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.90.2.el7.x86_64.rpm perf-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: kernel-3.10.0-693.90.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.90.2.el7.noarch.rpm kernel-doc-3.10.0-693.90.2.el7.noarch.rpm ppc64le: kernel-3.10.0-693.90.2.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debug-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.90.2.el7.ppc64le.rpm kernel-devel-3.10.0-693.90.2.el7.ppc64le.rpm kernel-headers-3.10.0-693.90.2.el7.ppc64le.rpm kernel-tools-3.10.0-693.90.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.90.2.el7.ppc64le.rpm perf-3.10.0-693.90.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm python-perf-3.10.0-693.90.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm x86_64: kernel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-headers-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.90.2.el7.x86_64.rpm perf-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: kernel-3.10.0-693.90.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.90.2.el7.noarch.rpm kernel-doc-3.10.0-693.90.2.el7.noarch.rpm x86_64: kernel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-devel-3.10.0-693.90.2.el7.x86_64.rpm kernel-headers-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.90.2.el7.x86_64.rpm perf-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: kernel-debug-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.90.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.90.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.90.2.el7.x86_64.rpm perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.90.2.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-28374 https://access.redhat.com/security/cve/CVE-2021-3347 https://access.redhat.com/security/cve/CVE-2021-33034 https://access.redhat.com/security/cve/CVE-2021-33909 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2021-006 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYPc9TtzjgjWX9erEAQj74Q/+MYfqRjICnJdQu26bEvEI/DN5Jt6YNmyM 8nVqaOD0vMaTmdK45RrH7PtEO/S/pm8/jnsDVrGwzSlyTnd6u/MHWOTlqvZvccn0 RBZ2CT2hMAtFjVZxnbKEXoaQW1eM0LFjjyTFTCcp32LydxcZMpXxmn162mCjhVje CtdLcO83TKFwQSE2n4h/DXS1Q11IOayaorc7W6y9V/d9ICEYl0L8hG46Zhui7T18 ylFKrvEwaPO1ZXDJajXlQRGoRgAbtUh1JD40u+R7XGM8dew+dk9hjV8FfdbKY1qv +SUBWlvPUahF3ZHsGFSIUO8442tijsUT3q4WY5xDkWDX4e1iQkLV0xPP2909xA5A noKv+jYhhkOnc7IrTUZDUhnu7qVl5oFhsXqmnHrhSb8/ntDfqwbKIknRmw4NEnIT hrvrSH3jR+gxlPGm7G4pnSujZ3H6pA14z7y6Dwv6BJg4IKkOvTO7SmmYZng9Jm5s efyzvRO3dBaoeFTcIaswmrxgWiCjs5lmj4SWl005uwuMSaeVvYG3EP1/mgDDgh0S PcnBoQqLot7C8U7QJquxUQ/PrxoAOcRcFCxbGG3MaAKq0xda1Rh/cAQhMsgBgQSq uBs6cFVvoQ5ObbGuiHGME39S2Va3T3c6Z3zz6QlBFPkaoxQHDrg5R3eJ8FMuW42m eDqZcy0vJHI=DoiN -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce