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CERTFR-2021-AVI-191
Vulnerability from certfr_avis - Published: 2021-03-15 - Updated: 2021-03-15
De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian LTS. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à l'intégrité des données.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Debian 9 Stretch versions ant\u00e9rieures \u00e0 4.9.258-1",
"product": {
"name": "N/A",
"vendor": {
"name": "Debian",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2021-26931",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-26931"
},
{
"name": "CVE-2021-26932",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-26932"
},
{
"name": "CVE-2020-29660",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29660"
},
{
"name": "CVE-2020-29569",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29569"
},
{
"name": "CVE-2020-29661",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29661"
},
{
"name": "CVE-2021-26930",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-26930"
},
{
"name": "CVE-2021-27363",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-27363"
},
{
"name": "CVE-2021-27364",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-27364"
},
{
"name": "CVE-2020-29568",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-29568"
},
{
"name": "CVE-2020-27815",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27815"
},
{
"name": "CVE-2021-27365",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-27365"
},
{
"name": "CVE-2020-36158",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-36158"
},
{
"name": "CVE-2021-28038",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-28038"
},
{
"name": "CVE-2019-19816",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19816"
},
{
"name": "CVE-2019-19318",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19318"
},
{
"name": "CVE-2021-3347",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3347"
},
{
"name": "CVE-2020-28374",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-28374"
},
{
"name": "CVE-2021-3178",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3178"
},
{
"name": "CVE-2019-19813",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19813"
},
{
"name": "CVE-2020-27825",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-27825"
}
],
"initial_release_date": "2021-03-15T00:00:00",
"last_revision_date": "2021-03-15T00:00:00",
"links": [],
"reference": "CERTFR-2021-AVI-191",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-03-15T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de\nDebian LTS. Certaines d\u0027entre elles permettent \u00e0 un attaquant de\nprovoquer une ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de\nservice \u00e0 distance et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de Debian LTS",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Debian LTS dla-2586 du 08 mars 2021",
"url": "https://www.debian.org/lts/security/2021/dla-2586"
}
]
}
CVE-2020-36158 (GCVE-0-2020-36158)
Vulnerability from cvelistv5 – Published: 2021-01-05 04:25 – Updated: 2024-08-04 17:23
VLAI
EPSS
Summary
mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.
Severity
8.8 (High)
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://patchwork.kernel.org/project/linux-wirele… | x_refsource_MISC |
| https://lore.kernel.org/r/20201206084801.26479-1-… | x_refsource_MISC |
| https://github.com/torvalds/linux/commit/5c455c5a… | x_refsource_MISC |
| https://git.kernel.org/cgit/linux/kernel/git/torv… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.debian.org/security/2021/dsa-4843 | vendor-advisoryx_refsource_DEBIAN |
| https://security.netapp.com/advisory/ntap-2021021… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
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CVE-2021-26930 (GCVE-0-2021-26930)
Vulnerability from cvelistv5 – Published: 2021-02-17 00:00 – Updated: 2024-08-03 20:33
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
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CVE-2021-26931 (GCVE-0-2021-26931)
Vulnerability from cvelistv5 – Published: 2021-02-17 00:00 – Updated: 2024-08-03 20:33
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
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CVE-2021-26932 (GCVE-0-2021-26932)
Vulnerability from cvelistv5 – Published: 2021-02-17 00:00 – Updated: 2024-08-03 20:33
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the success or failure of each operation. Unfortunately, when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively implying their success from the success of related batch elements. In other cases, errors resulting from one batch element lead to further batch elements not being inspected, and hence successful ones to not be possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are vulnerable. Linux backends run in HVM / PVH modes are not vulnerable. This affects arch/*/xen/p2m.c and drivers/xen/gntdev.c.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
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CVE-2021-27363 (GCVE-0-2021-27363)
Vulnerability from cvelistv5 – Published: 2021-03-07 03:55 – Updated: 2024-08-03 20:48
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/03/06/1 | x_refsource_MISC |
| https://bugzilla.suse.com/show_bug.cgi?id=1182716 | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://blog.grimm-co.com/2021/03/new-old-bugs-in… | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| http://packetstormsecurity.com/files/162117/Kerne… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021040… | x_refsource_CONFIRM |
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CVE-2021-27364 (GCVE-0-2021-27364)
Vulnerability from cvelistv5 – Published: 2021-03-07 04:03 – Updated: 2024-08-03 20:48
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel through 5.11.3. drivers/scsi/scsi_transport_iscsi.c is adversely affected by the ability of an unprivileged user to craft Netlink messages.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://bugzilla.suse.com/show_bug.cgi?id=1182717 | x_refsource_MISC |
| https://blog.grimm-co.com/2021/03/new-old-bugs-in… | x_refsource_MISC |
| http://packetstormsecurity.com/files/162117/Kerne… | x_refsource_MISC |
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CVE-2021-27365 (GCVE-0-2021-27365)
Vulnerability from cvelistv5 – Published: 2021-03-07 04:22 – Updated: 2024-08-03 20:48
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://blog.grimm-co.com/2021/03/new-old-bugs-in… | x_refsource_MISC |
| http://packetstormsecurity.com/files/162117/Kerne… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021040… | x_refsource_CONFIRM |
| https://bugzilla.suse.com/show_bug.cgi?id=1182715 | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
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CVE-2021-28038 (GCVE-0-2021-28038)
Vulnerability from cvelistv5 – Published: 2021-03-05 00:00 – Updated: 2024-08-03 21:33
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as failed memory allocations (as a result of changes to the handling of grant mapping errors). A host OS denial of service may occur during misbehavior of a networking frontend driver. NOTE: this issue exists because of an incomplete fix for CVE-2021-26931.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
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CVE-2021-3178 (GCVE-0-2021-3178)
Vulnerability from cvelistv5 – Published: 2021-01-19 06:44 – Updated: 2024-08-03 16:45 Disputed
VLAI
EPSS
Summary
fs/nfsd/nfs3xdr.c in the Linux kernel through 5.10.8, when there is an NFS export of a subdirectory of a filesystem, allows remote attackers to traverse to other parts of the filesystem via READDIRPLUS. NOTE: some parties argue that such a subdirectory export is not intended to prevent this attack; see also the exports(5) no_subtree_check default behavior
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://patchwork.kernel.org/project/linux-nfs/pa… | x_refsource_MISC |
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
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CVE-2021-3347 (GCVE-0-2021-3347)
Vulnerability from cvelistv5 – Published: 2021-01-29 16:56 – Updated: 2026-02-25 17:10
VLAI
EPSS
Summary
An issue was discovered in the Linux kernel through 5.10.11. PI futexes have a kernel stack use-after-free during fault handling, allowing local users to execute code in the kernel, aka CID-34b1a1ce1458.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-416 - Use After Free
Assigner
References
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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