**Issue Overview:**
A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)
An information leak flaw was found in NFS over RDMA in the net/sunrpc/xprtrdma/rpc_rdma.c function in RPCRDMA_HDRLEN_MIN (7) (in rpcrdma_max_call_header_size, rpcrdma_max_reply_header_size). This flaw allows an attacker with normal user privileges to leak kernel information. (CVE-2022-0812)
Due to the small table perturb size, a memory leak flaw was found in the Linux kernel's TCP source port generation algorithm in the net/ipv4/tcp.c function. This flaw allows an attacker to leak information and may cause a denial of service. (CVE-2022-1012)
A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service. (CVE-2022-1184)
A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue. (CVE-2022-1966)
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)
The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. (CVE-2022-32296)
An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point registers. (CVE-2022-32981)
A flaw was found in hw. Incomplete cleanup of multi-core shared buffers for some Intel® Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21123)
A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel® Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21125)
A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel® Processors may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21166)
\--
References to CVE-2022-21123, CVE-2022-21125, and CVE-2022-21166 have been added after the original release of this advisory, however those vulnerabilities were fixed by the packages referenced by this advisory's initial release on 2022-07-06.
**Affected Packages:**
kernel
**Issue Correction:**
Run _yum update kernel_ to update your system.
**New Packages:**
aarch64:
kernel-4.14.285-215.501.amzn2.aarch64
kernel-headers-4.14.285-215.501.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.285-215.501.amzn2.aarch64
perf-4.14.285-215.501.amzn2.aarch64
perf-debuginfo-4.14.285-215.501.amzn2.aarch64
python-perf-4.14.285-215.501.amzn2.aarch64
python-perf-debuginfo-4.14.285-215.501.amzn2.aarch64
kernel-tools-4.14.285-215.501.amzn2.aarch64
kernel-tools-devel-4.14.285-215.501.amzn2.aarch64
kernel-tools-debuginfo-4.14.285-215.501.amzn2.aarch64
kernel-devel-4.14.285-215.501.amzn2.aarch64
kernel-debuginfo-4.14.285-215.501.amzn2.aarch64
i686:
kernel-headers-4.14.285-215.501.amzn2.i686
src:
kernel-4.14.285-215.501.amzn2.src
x86_64:
kernel-4.14.285-215.501.amzn2.x86_64
kernel-headers-4.14.285-215.501.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.285-215.501.amzn2.x86_64
perf-4.14.285-215.501.amzn2.x86_64
perf-debuginfo-4.14.285-215.501.amzn2.x86_64
python-perf-4.14.285-215.501.amzn2.x86_64
python-perf-debuginfo-4.14.285-215.501.amzn2.x86_64
kernel-tools-4.14.285-215.501.amzn2.x86_64
kernel-tools-devel-4.14.285-215.501.amzn2.x86_64
kernel-tools-debuginfo-4.14.285-215.501.amzn2.x86_64
kernel-devel-4.14.285-215.501.amzn2.x86_64
kernel-debuginfo-4.14.285-215.501.amzn2.x86_64
kernel-livepatch-4.14.285-215.501-1.0-0.amzn2.x86_64
### Additional References
Red Hat: [CVE-2022-0494](<https://access.redhat.com/security/cve/CVE-2022-0494>), [CVE-2022-0812](<https://access.redhat.com/security/cve/CVE-2022-0812>), [CVE-2022-1012](<https://access.redhat.com/security/cve/CVE-2022-1012>), [CVE-2022-1184](<https://access.redhat.com/security/cve/CVE-2022-1184>), [CVE-2022-1966](<https://access.redhat.com/security/cve/CVE-2022-1966>), [CVE-2022-21123](<https://access.redhat.com/security/cve/CVE-2022-21123>), [CVE-2022-21125](<https://access.redhat.com/security/cve/CVE-2022-21125>), [CVE-2022-21166](<https://access.redhat.com/security/cve/CVE-2022-21166>), [CVE-2022-32250](<https://access.redhat.com/security/cve/CVE-2022-32250>), [CVE-2022-32296](<https://access.redhat.com/security/cve/CVE-2022-32296>), [CVE-2022-32981](<https://access.redhat.com/security/cve/CVE-2022-32981>)
Mitre: [CVE-2022-0494](<https://vulners.com/cve/CVE-2022-0494>), [CVE-2022-0812](<https://vulners.com/cve/CVE-2022-0812>), [CVE-2022-1012](<https://vulners.com/cve/CVE-2022-1012>), [CVE-2022-1184](<https://vulners.com/cve/CVE-2022-1184>), [CVE-2022-1966](<https://vulners.com/cve/CVE-2022-1966>), [CVE-2022-21123](<https://vulners.com/cve/CVE-2022-21123>), [CVE-2022-21125](<https://vulners.com/cve/CVE-2022-21125>), [CVE-2022-21166](<https://vulners.com/cve/CVE-2022-21166>), [CVE-2022-32250](<https://vulners.com/cve/CVE-2022-32250>), [CVE-2022-32296](<https://vulners.com/cve/CVE-2022-32296>), [CVE-2022-32981](<https://vulners.com/cve/CVE-2022-32981>)
{"amazon": [{"lastseen": "2023-02-08T17:08:02", "description": "**Issue Overview:**\n\nA kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)\n\nAn information leak flaw was found in NFS over RDMA in the net/sunrpc/xprtrdma/rpc_rdma.c function in RPCRDMA_HDRLEN_MIN (7) (in rpcrdma_max_call_header_size, rpcrdma_max_reply_header_size). This flaw allows an attacker with normal user privileges to leak kernel information. (CVE-2022-0812)\n\nDue to the small table perturb size, a memory leak flaw was found in the Linux kernel's TCP source port generation algorithm in the net/ipv4/tcp.c function. This flaw allows an attacker to leak information and may cause a denial of service. (CVE-2022-1012)\n\nA use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service. (CVE-2022-1184)\n\nA use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue. (CVE-2022-1966)\n\nnet/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)\n\nThe Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. (CVE-2022-32296)\n\nAn issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point registers. (CVE-2022-32981)\n\n \n**Affected Packages:** \n\n\nkernel\n\n \n**Issue Correction:** \nRun _yum update kernel_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n i686: \n \u00a0\u00a0\u00a0 kernel-devel-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-debuginfo-common-i686-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 perf-debuginfo-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-headers-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-debuginfo-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-tools-devel-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-tools-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 perf-4.14.285-147.501.amzn1.i686 \n \u00a0\u00a0\u00a0 kernel-tools-debuginfo-4.14.285-147.501.amzn1.i686 \n \n src: \n \u00a0\u00a0\u00a0 kernel-4.14.285-147.501.amzn1.src \n \n x86_64: \n \u00a0\u00a0\u00a0 kernel-tools-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-debuginfo-common-x86_64-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-tools-debuginfo-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-headers-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 perf-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-debuginfo-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-tools-devel-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-devel-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 perf-debuginfo-4.14.285-147.501.amzn1.x86_64 \n \u00a0\u00a0\u00a0 kernel-4.14.285-147.501.amzn1.x86_64 \n \n \n\n### Additional References\n\nRed Hat: [CVE-2022-0494](<https://access.redhat.com/security/cve/CVE-2022-0494>), [CVE-2022-0812](<https://access.redhat.com/security/cve/CVE-2022-0812>), [CVE-2022-1012](<https://access.redhat.com/security/cve/CVE-2022-1012>), [CVE-2022-1184](<https://access.redhat.com/security/cve/CVE-2022-1184>), [CVE-2022-1966](<https://access.redhat.com/security/cve/CVE-2022-1966>), [CVE-2022-32250](<https://access.redhat.com/security/cve/CVE-2022-32250>), [CVE-2022-32296](<https://access.redhat.com/security/cve/CVE-2022-32296>), [CVE-2022-32981](<https://access.redhat.com/security/cve/CVE-2022-32981>)\n\nMitre: [CVE-2022-0494](<https://vulners.com/cve/CVE-2022-0494>), [CVE-2022-0812](<https://vulners.com/cve/CVE-2022-0812>), [CVE-2022-1012](<https://vulners.com/cve/CVE-2022-1012>), [CVE-2022-1184](<https://vulners.com/cve/CVE-2022-1184>), [CVE-2022-1966](<https://vulners.com/cve/CVE-2022-1966>), [CVE-2022-32250](<https://vulners.com/cve/CVE-2022-32250>), [CVE-2022-32296](<https://vulners.com/cve/CVE-2022-32296>), [CVE-2022-32981](<https://vulners.com/cve/CVE-2022-32981>)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "LOW", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 8.2, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 4.2}, "published": "2022-06-30T23:38:00", "type": "amazon", "title": "Important: kernel", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 7.2, "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2022-0494", "CVE-2022-0812", "CVE-2022-1012", "CVE-2022-1184", "CVE-2022-1966", "CVE-2022-32250", "CVE-2022-32296", "CVE-2022-32981"], "modified": "2022-07-07T00:00:00", "id": "ALAS-2022-1604", "href": "https://alas.aws.amazon.com/ALAS-2022-1604.html", "cvss": {"score": 7.2, "vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C"}}], "nessus": [{"lastseen": "2023-03-21T08:43:07", "description": "The version of kernel installed on the remote host is prior to 4.14.285-215.501. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1813 advisory.\n\n - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)\n\n - ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2022-32250. Reason: This candidate is a duplicate of CVE-2022-32250. Notes: All CVE users should reference CVE-2022-32250 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage. (CVE-2022-1966)\n\n - net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free. (CVE-2022-32250)\n\n - The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. (CVE-2022-32296)\n\n - An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point registers. (CVE-2022-32981)\n\n - An information leak flaw was found in NFS over RDMA in the net/sunrpc/xprtrdma/rpc_rdma.c function in RPCRDMA_HDRLEN_MIN (7) (in rpcrdma_max_call_header_size, rpcrdma_max_reply_header_size). This flaw allows an attacker with normal user privileges to leak kernel information. (CVE-2022-0812)\n\n - kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)\n\n - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or CAP_SYS_RAWIO) to create issues with confidentiality. 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rpm_spec_vers_cmp = NULL;\n var epoch = NULL;\n var allowmaj = NULL;\n var exists_check = NULL;\n if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];\n if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];\n if (!empty_or_null(pkg['sp']) && !enterprise_linux_flag) sp = pkg['sp'];\n if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];\n if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];\n if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];\n if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];\n if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];\n if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];\n if (reference &&\n _release &&\n rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&\n (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&\n rpm_check(release:_release, sp:sp, cpu:_cpu, 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Important: kernel
